Pools Spas 2000 Hot Spot Owners Manual User

2017-03-27

User Manual: Pools Spas 2000-Hot-Spot-Owners-Manual

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Owner’s Manual

Watkins
Manufacturing
Corporation

Congratulations on your decision
to enjoy the finest spa available...
Welcome to the growing family of
Hot Spot® Spa owners.

Owner’s Manual
his Owner’s Manual will acquaint you with your new spa’s operation and general maintenance. We
suggest that you take some time to carefully review all six sections. Please keep this manual available for
reference.
If you have any questions about any aspect of your spa’s set-up, operation or maintenance, contact your
authorized Hot Spot® Spa dealership. They are trained professionals who are familiar with the product as well
as new spa ownership concerns. Their expertise will facilitate the enjoyment of your new Hot Spot® Spa.
The Serial Number/Identification label is located within the equipment compartment of your Hot Spot® Spa.
The serial number should also be documented on the delivery receipt from your dealer.
IMPORTANT: Watkins Manufacturing Corporation reserves the right to change specifications or design
without notification and without incurring any obligation.

DATE PURCHASED: ________________________________________
DATE INSTALLED: ____________________________________________
DEALER: ____________________________________________________
ADDRESS: __________________________________________________
TELEPHONE: ________________________________________________
SPA MODEL/SERIAL NUMBER:________________________________
COVER SERIAL NUMBER: ____________________________________
n most cities and counties, permits will be required for the installation of electrical circuits or the construction of exterior surfaces
(decks and gazebos). In addition, some communities have adopted residential barrier codes which may require fencing and/or
self-closing gates on the property to prevent unsupervised access to a pool (or spa) by children under 5 years of age. Your Hot
Spot® Spa is equipped with a locking cover that meets the ASTM F1346-91 Standard for Safety Covers and as a result, is usually
exempt from most barrier requirements. As a general practice, your local Building Department will inform you of any applicable
barrier requirements at the time a permit is obtained for the installation of an electrical circuit. Your Hot Spot® Spa Dealer can
provide information on which permits may be required.

Table of Contents
I. SAFETY INFORMATION ............................................................................................................................................2
II. INSTALLATION INSTRUCTIONS
Site Preparation......................................................................................................................................................................................5
Outdoor Installation ................................................................................................................................................................................5
Deck Installation ....................................................................................................................................................................................5
Indoor Installation ..................................................................................................................................................................................5
Spa Leveling Instructions ......................................................................................................................................................................6
Electrical Requirements ........................................................................................................................................................................7
Spa Specifications................................................................................................................................................................................10

III. OPERATING INSTRUCTIONS
Start-up and Refill Procedures ............................................................................................................................................................14
Heating and Hydromassage Systems ................................................................................................................................................15
Safety Equipment ................................................................................................................................................................................16
Comfort Control® System....................................................................................................................................................................16
Spa Control Panel ................................................................................................................................................................................17

IV. SPA CARE AND MAINTENANCE
Draining the Water................................................................................................................................................................................17
Filter Maintenance................................................................................................................................................................................18
Care of the Exterior Finish....................................................................................................................................................................18
Vacation Care Instructions ..................................................................................................................................................................20
Prevention of Freezing ........................................................................................................................................................................20

V. WATER QUALITY AND MAINTENANCE
General Information..............................................................................................................................................................................21
Methods for Testing the Spa Water ....................................................................................................................................................21
Hot Spot® Spa Water Maintenance Program ....................................................................................................................................22
Freshwater Ag+® Silver Ion Purifier ......................................................................................................................................................24
Silver Ion Sanitation..............................................................................................................................................................................25
Sanitation Chart....................................................................................................................................................................................25
Freshwater Ag+® Silver Ion Purifier Replacement................................................................................................................................26
Chlorine (Sodium Dichlor) ....................................................................................................................................................................27
Chlorine Maintenance Schedule..........................................................................................................................................................28
Common Water Chemistry Questions ................................................................................................................................................29
Water Terminology ..............................................................................................................................................................................30

VI. SERVICE INFORMATION
General Information..............................................................................................................................................................................31
GFCI and High Limit Thermostat ........................................................................................................................................................31
Miscellaneous Service Information......................................................................................................................................................31
Acts Invalidating Warranty ..................................................................................................................................................................32
Disclaimers ..........................................................................................................................................................................................32
Watkins Customer Service ..................................................................................................................................................................32
Troubleshooting ..................................................................................................................................................................................33

Page 1

I. SAFETY INFORMATION
IMPORTANT SAFETY INSTRUCTIONS

READ AND FOLLOW ALL INSTRUCTIONS
AVOIDING THE RISK TO CHILDREN
WARNING:
• RISK OF CHILD DROWNING. Extreme caution must be exercised to prevent unauthorized access by children. To avoid
accidents, ensure that children cannot use a spa unless they are supervised at all times.
• To reduce the risk of injury, do not permit children to use this product unless they are closely supervised at all times.
• To reduce the risk of injury, lower water temperatures are recommended for young children. Children are especially
sensitive to hot water.

DO:
• Make sure you always lock the child resistant locks after using the spa for your children’s safety. Every Hot Spot® Spa is
equipped with a locking cover that meets the ASTM F1346-91 Standard for Safety Covers.
• Test the water temperature with your hand before allowing your child to enter the spa to be sure that it’s comfortable.
Children are especially sensitive to hot water.
• Remind children that wet surfaces can be very slippery. Make sure that the children are careful when entering or exiting the
spa.

DON’T:
• Allow children to climb onto the spa cover.
• Allow children to have unsupervised access to the spa.

AVOIDING THE RISK OF ELECTROCUTION
Risk of electrocution
• Connect only to a grounded source.
• Do not bury the power cord. A buried power cord may result in death or serious personal injury due to electrocution if direct
burial-type cable is not used, or if improper digging occurs.
• A ground terminal (pressure wire connector) is provided on the control box inside the unit to permit connection of a
2
minimum No. 8 AWG (8.4 mm ) solid copper bonding conductor between this point and any metal equipment, metal water
pipe, metal enclosures of electrical equipment, or conduit within five feet (1.5 m) of the unit as needed to comply with local
requirements.

WARNING:
• To reduce the risk of electrical shock, replace a damaged cord immediately. Failure to do so may result in death or serious
personal injury due to electrocution.
• Your spa is provided with a Ground Fault Circuit Interrupter for user and equipment protection. To ensure proper operation
of this important safety device, test according to the following instructions per electrical configuration.
Cord-Connected 115 Volt, 15 Amp Models: The GFCI is located at the end of the power cord. Before each use, with the
unit operating, push the TEST button. The unit should stop operating and the RESET button should protrude. Push the
RESET button. The spa should now return to normal operation. If the interrupter does not perform in this manner, there may
be an electrical malfunction and with it, the possibility of an electric shock. Disconnect the power until the problem has been
corrected.
Hard-Wired 115 Volt, 30 Amp Models: The GFCI breaker, located inside the subpanel, supplies all of the power to the spa.
Before each use, open the subpanel and press the TEST button located on the subpanel GFCI breaker. The breaker should
snap into the “tripped” position and the spa should stop operating. Reset the subpanel GFCI breaker by completely flipping
the breaker switch down, into the off position. Then, flip the breaker switch up, into the on position. Power should be
restored and the spa should resume operation. If the breaker does not perform in this manner, there may be an electrical
malfunction and with it, the possibility of an electric shock. Disconnect the power until the problem has been corrected.

DANGER: RISK OF ELECTRICAL SHOCK
• Install at least 5 feet (1.5 m) from all metal surfaces. A spa may be installed within 5 feet of a metal surface if each metal
surface is permanently connected by a minimum No. 8 AWG (8.42 mm2) solid copper conductor attached to the wire
ground connector on the terminal box that is provided for this purpose if in accordance with National Electrical Code

Safety Information

Page 2

ANSI/NMFPA70-1993.
• Do not permit any electrical appliances, such as a light, telephone, radio, or television within 5 feet (1.5 m) of a spa.
Failure to maintain a safe distance may result in death or serious personal injury due to electrocution if the appliance
should fall into the spa.

DO:
• Be sure your spa is connected to the power supply correctly - use a licensed contractor.
• Disconnect the spa from the power supply before draining the spa or servicing the electrical components.
• Test the Ground Fault Circuit Interrupter(s) before each use.

DON’T:
• Use the spa with the equipment compartment door removed.
• Place electrical appliances within 5 feet (1.5m) of the spa.
• Use an extension cord to connect the spa to its power source. The cord may not be properly grounded and the
connection is a shock hazard. An extension cord may cause a voltage drop, which will cause overheating of the jet
pump motor and motor damage.
• Attempt to open the electrical control box. There are no user serviceable parts inside.

RISKS TO AVOID
DANGER: RISK OF INJURY
• To reduce the risk of injury to persons, DO NOT remove suction fittings (filter standpipes) located in the filter
compartment.
• The suction fittings in the spa are sized to match the specific water flow created by the pump. Should the need arise
to replace the suction fittings or the pump, be sure that the flow rates are compatible.
• There is a danger of slipping and falling. Remember that wet surfaces can be very slippery. Take care when entering
or exiting the spa.

Increased side effects of medication
• The use of drugs, alcohol or medication before or during spa use may lead to unconsciousness with the possibility of
drowning.
• Persons using medications should consult a physician before using a spa; some medication may cause a user to
become drowsy, while other medication may affect heart rate, blood pressure and circulation.
• Persons taking medications which induce drowsiness, such as tranquilizers, antihistimines or anticoagulents should
not use the spa.

Health problems affected by spa use
• Pregnant women should consult a physician before using spa.
• Persons suffering from obesity or with a medical history of heart disease, low or high blood pressure, circulatory
system problems or diabetes should consult a physician before using spa.

Unclean water
• Keep the water clean and sanitized with correct chemical care. The recommended levels for your Hot Spot® Spa are:
Free Available Chlorine (FAC):
3.0-5.0 ppm
Water pH:
7.4-7.6
Total Alkalinity:
125-150 ppm
Calcium Hardness:
150-200 ppm
(Refer to Water Quality and Maintenance section for complete instructions.)
IMPORTANT: Turn on the jet pump for a least ten minutes after adding ANY spa water chemicals into the filter
compartment.
• Clean the filter cartridge monthly to remove debris and mineral buildup which may affect the performance of the
hydromassage jets, limit the flow, or trip the high limit thermostat which will turn off the entire spa.

AVOIDING THE RISK OF HYPERTHERMIA
Prolonged immersion in hot water can result in HYPERTHERMIA, a dangerous condition which occurs when the internal
temperature of the body reaches a level above normal (98.6°F). The symptoms of hyperthermia include unawareness of
impending hazard, failure to perceive heat, failure to recognize the need to exit the spa, physical inability to exit the spa, fetal
damage in pregnant women, and unconsciousness resulting in a danger of drowning.

Page 3

Safety Information

WARNING:
The use of alcohol, drugs, or medication can greatly increase the risk of fatal hyperthermia in hot tubs and spas.

TO REDUCE THE RISK OF INJURY:
• The water in the spa should never exceed 104°F. Water temperatures between 100°F and 104°F are considered
safe for a healthy adult. Lower water temperatures are recommended for extended use (exceeding 10 minutes)
and for young children. Extended use can cause hyperthermia.
• Pregnant or possibly pregnant women should limit spa water temperatures to 100°F. Failure to do so may result in
permanent injury to your baby.

AVOIDING THE RISK OF SKIN BURNS:
WARNING:
• To reduce the risk of injury, before entering a spa the user should measure the water temperature with an accurate
thermometer, since the tolerance of temperature-regulating devices may vary by as much as ±5°F.
• Test the water with your hand before entering the spa to be sure it’s comfortable.

SAFETY SIGN
Each Hot Spot® Spa is shipped with a SAFETY SIGN in the owner’s package. The sign, which is required as a condition of
Product Listing, should be permanently installed where it is visible to the users of the spa. To obtain additional SAFETY
SIGNS, contact your Hot Spot® Spa Dealer and request Part #70798.

IMPORTANT SPA INSTRUCTIONS
The following contains important spa information, and we strongly encourage you to read and apply them.

DO:
• Use and lock the cover when the spa is not in use, whether it is empty or full.
• Follow the Spa Care and Maintenance recommendations stated in this manual.
• Use only approved accessories and recommended spa chemicals and cleaners.

DON’T:
• Leave the Hot Spot® Spa exposed to the sun without water or the cover in place. Exposure to direct sunlight can
cause solar distress of the shell material.
• Roll or slide the spa on its side. This will damage the siding.
• Lift or drag the cover by using the tie-down straps; always lift or carry the cover by using the handles.
• Attempt to open the electrical control box. There are no user serviceable parts inside. Opening of the control box
by the spa owner will void the warranty. If you have an operational problem, carefully go through the steps outlined
in the Troubleshooting section. If you are not able to resolve the problem, contact your authorized Hot Spot® Spa
Dealer. Many problems can easily be diagnosed over the telephone by an Authorized Service Technician.

SAVE THESE INSTRUCTIONS

x
Safety
Information

Page 4
x

II. INSTALLATION INSTRUCTIONS
SITE PREPARATION
ou probably have a spot picked out for your new spa, whether it’s indoors or outdoors, on a patio or on a deck. Just make
sure you check the following:
• Always put your spa on a structurally sound, level surface. A filled spa can weigh a great deal. Make certain that the
location you choose can support the weight of your filled spa.
• Don’t forget to level your spa before filling it. (See the Spa Leveling section of this manual)
• Locate your equipment compartment, which houses all of the electrical components, in a place where water will drain
away from it. Allowing water into the equipment compartment can damage the electronics, or may result in tripping
your house’s circuit breaker.
• Leave yourself easy access to the Ground Fault Circuit Interrupter (GFCI) for testing. The GFCI is located at the end of
the power cord, or at the subpanel of a hard-wired (optional) 30 amp spa.
• Never let water get into the subpanel (optional 30 amp models) or into the electrical outlet that your spa is plugged
into. Your spa’s subpanel is raintight when installed correctly with the door closed. Consult your local code authority
to determine if an electrical outlet with a cover is required for your installation. If it is, a suitable outlet may be
purchased from your Authorized Hot Spot® Dealer. Ask for Part #71591.
• Leave access to the equipment compartment for periodic spa care and maintenance.

OUTDOOR AND PATIO INSTALLATION
o matter where you install your new spa, it’s important that you have a solid foundation to support it. Structural damage
to the spa resulting from incorrect installation or placement on an inadequate foundation is not covered under the spa’s
limited warranty.

If you install the spa outdoors, we recommend a reinforced concrete pad at least four inches thick. The reinforcing rod or
mesh in the pad should be attached to a bond wire.
If you place the spa on the ground, even temporarily, place stepping stones under the leveling areas (see Spa Leveling
Instructions). The stones should be at least two inches thick and twelve inches square. Even with stones in place, the spa will
inevitably settle and become unlevel. Plus, a spa surrounded by dirt or grass will soon be filled with dirt or grass from users’
feet; therefore, it is important to get it onto a solid foundation as soon as possible.

DECK INSTALLATION
o be certain your deck can support your spa, you must know the deck’s maximum load capacity. Consult a qualified
building contractor or structural engineer. To find the weight of your spa, its contents and occupants, refer to the Spa
Specifications for your model. This weight per square foot must not exceed the structure’s rated capacity, or serious structural
damage could result.

INDOOR/BASEMENT INSTALLATION
e aware of some special requirements if you place your spa indoors. Water will accumulate around the spa, so flooring
materials must provide a good grip when wet. Proper drainage is essential to prevent a build-up of water around the spa.
When building a new room for the spa it is recommended that a floor drain be installed. The humidity will naturally increase
with the spa installed. Water may get into woodwork and produce dryrot, mildew, or other problems. Check for airborne
moisture’s effects on exposed wood, paper, etc. in the room. To minimize these effects, it is best to provide plenty of
ventilation to the spa area. An architect can help to determine if more ventilation must be installed.

Your Hot Spot® Spa Dealer can help you with local information such as zoning regulations and building codes.

HOW TO UNPACKAGE AND MOVE THE
HOT SPOT SPA
®

The Hot Spot® Spa has been designed to be easy to move and install. For ease of handling, the spa should be moved as
close as possible to the installation site before unpackaging.
CAUTION: Do not slide or roll the spa on its side. This will damage the siding.

Page 5
x

Installation Instructions
x

IMPORTANT REMINDERS:
• The Hot Spot® RE and RLX weigh 200 and 210 pounds respectively, and the Hot Spot SE and SLX weigh 250 and 275
pounds respectively, when in the factory packaging. At least two people are required to safely move and set down the
spa.
• Do not leave the spa exposed to the sun without water or the vinyl cover in place. Exposure to direct sunlight can cause
solar distress of the shell material.

INSTALLATION NOTES:
1. If you are an owner of a condominium, town home/patio home or are a member of a homeowner’s association, contact
your representatives regarding their requirements. If you have any questions regarding zoning requirements or building
codes, contact your local city government office.
2. IMPORTANT: The spa is designed for installation on a relatively flat and level surface. Installing the spa on an unlevel
surface will result in unlevel water and an aesthetically unbalanced spa, and may affect its performance. The spa may be
shimmed according to the following Spa Leveling Instructions; however, shimming of the spa may place additional stress
on the spa’s support system. Damage to the spa caused by the incorrect installation of the spa is not covered by the
warranty.

Spa Leveling Instructions
Approved Shim Material (1/4” to 1/2” thick, cut into 2” x 4” rectangles)
• Cedar Shingles
• Redwood
• Exterior Rated Plywood
• Exterior Rated Lumber

Suggested Leveling Procedure:
1. Using a six-foot carpenter’s level (or a short level and a straight piece of wood about eight feet long), check the spa to
identify the lowest and highest corners.
2. With one end of the carpenter’s level resting on the highest corner of the spa, and the opposite end resting on the lowest
corner, gently raise the lower end of the level with shims placed on the corner of the spa shell, until a level reading is
achieved.
3. Carefully lift and pivot the carpenter’s level (so as not to knock over your stack of shims) to each of the remaining corners.
Place the required number of shims under the end of the level at each corner until a level reading is achieved. These are
now your preselected shims.
4. Carefully remove the carpenter’s level and the sets of shims. With one or more persons lifting the lowest side of the spa,
place a 4” x 4” block under the spa base, in the center of the side lifted.
5. The Hot Spot® Spa may be shimmed only along the wooden base supports shown as shaded areas in the bottom view of
each spa shown below. Set the preselected shim sets under the wooden base support at their designated leveling point for
each corner. Lift the spa, remove the support block, and set the spa on the shims. Repeat this procedure for the opposite
side of the spa, if necessary.
6. Use the carpenter’s level to recheck the level of the spa.

Warning!

7. Identify the locations of the remaining approved shimming points using the illustrations below, and carefully
slide helper shims under the spa beneath each location. These helper shims should create a snug fit
between the foundation and base support system. If it is necessary to lift the spa to place the helper shims,
use care not to kick out the original corner shims.

Watkins Manufacturing
Corporation recommends that
the Hot Spot® Spa be installed
above ground. Lowering the
top of the spa to ground level,
or employing decking which
raises standing level toward the
top of the spa substantially
increases the hazard of
accidental entry. Consult a
licensed building contractor to
design or evaluate your custom
decking requirements.

x
Installation
Instructions

78" (1.98m)

78"
(1.98m)

Page 6
x

78"
(1.98m)

Electrical Requirements and
Precautions
GENERAL INFORMATION
our Hot Spot® Spa has been carefully designed to give you maximum safety against electrical shock. Connecting the
spa to an improperly wired circuit will negate many of the spa’s safety features. Please read and follow the electrical
installation requirements and instructions for your specific spa model completely!

There are two electrical configurations associated with Hot Spot® Spas. Each spa comes standard as a 115 volt 15 amp,
cord-connected electrical configuration, which is designated as an “either/or” hydromassage system. This means that the
heater will not activate simultaneously with the high speed mode of the jet pump. If you use your spa for extremely long
periods of time with the high speed jet pump operating, you may experience a slight drop in water temperature. This
happens because the heater will not heat while the pump is running on high. To allow the heater to operate at the same
time as the high speed jet pump, the spa may be converted (by an authorized technician) to a 115 volt 30 amp hard-wired
configuration. The 30 amp configuration provides enough electrical current to allow the heater and the high speed jet
pump to operate simultaneously. Conversion requires electrical modification within the control box (contact an authorized
Hot Spot® Service Technician) and the installation of an electrical subpanel (available from your Hot Spot® Dealer). A
licensed electrician must install the subpanel.

ELECTRICAL REQUIREMENTS
The spa must be connected to a 115 volt, 15 amp (30 amp for converted models) grounded circuit. The equipment pack
requires a MINIMUM of 104 volts under load. A dedicated circuit is required; the term “dedicated” means the electrical
circuit is not being used for any other high-load electrical items (patio lights, appliances, garage circuits, etc.). If the spa is
connected to a non-dedicated circuit, overloading will result in “nuisance tripping” of the internal fuses or of the breaker
switch at the house electrical breaker panel.
The circuit must be properly wired; that is, it must have the following:
• Standard (cord-connected) 115 volt 15 amp – A minimum 15 amp circuit breaker in the house breaker panel,
#14 AWG or larger wire (including the ground wire) and the correct polarity throughout the circuit.
• Converted (hard-wired) 115 volt 30 amp – A minimum 30 amp circuit breaker in the house breaker panel,
#10 AWG or larger wire (including the ground wire), a subpanel with an appropriate GFCI breaker, and the correct
polarity throughout the circuit.
A pressure wire connector is provided on the exterior surface of the spa’s electrical control box, located inside the
equipment compartment. This is to permit the connection of a bonding ground wire between this point and any metal
equipment, enclosures, pipe or conduit within five feet of the spa (if needed to comply with local building code
requirements). The bonding wire must be at least a #8 AWG solid copper wire.
NEVER CONNECT THE SPA TO AN EXTENSION CORD!

SPA INSTALLATION INSTRUCTIONS
Each Hot Spot® Spa comes equipped with approximately 15 feet of usable power cord (this is the maximum length
allowed by regulatory standards and the National Electric Code). The power cord is stored for shipping inside the
equipment compartment. To remove the power cord, open the equipment compartment and locate the cord. Carefully pull
the cord out of the equipment compartment to the desired length.
If you choose to convert your spa to 115 volt 30 amp operation (contact an authorized Hot Spot® Spa Service Technician
to perform the conversion), a licensed electrician must install the subpanel (available from your Hot Spot® Spa Dealer).
Refer to the 30 amp wiring instructions at the end of this section for electrical connections and specifications.

STANDARD, CORD-CONNECTED 115 VOLT 15 AMP
CONFIGURATION
For your safety, if you are having an electrician install an electric outlet for the spa outdoors, it should be no closer than ten
(10) feet and no further than fifteen (15) feet from the spa. If the spa is being installed indoors, it should be no closer than
five (5) feet and no further than ten (10) feet from the spa. [Reference National Electrical Code 680 - 6a(1) and 680 - 41a.]
One GFCI is used in the cord-connected 15 amp configuration. The GFCI module is located at the end of the power cord.
To test the GFCI, simply press the TEST button. The GFCI should trip to the “off” position, disconnecting power to the spa.
To reset the GFCI, press the RESET button. The GFCI should reset, and power should be restored to the spa. If the GFCI
does not function in this way, unplug the cord and contact an authorized Hot Spot® Spa Service Technician.
NOTE: Consult your local code authority to determine if an electrical outlet with a cover is required for your installation. If it
is, a suitable outlet cover may be purchased from your Authorized Hot Spot® Dealer. Ask for Part #71591.

Page 7
x

Electrical Requirementsx

CONVERTED 115 VOLT 30 AMP CONFIGURATION
Conversion Instructions
NOTE: An Authorized Hot Spot® Spa Technician must perform the conversion.
1. Disconnect power to the spa and access the control box.
2. Locate the program jumpers (JM1, JM2 and JM3) at the bottom right of the control box (see Figure 1).
3. Using a pair of needle nose pliers, carefully move the JM1 jumper from pins 2 and 3 to pins 1 and 2 (see Figure 2).
A licensed electrician must install the subpanel (available from your Hot Spot® Spa Dealer) to supply
power to the spa. The subpanel must be placed in sight of the spa, at a minimum distance of 5 feet away.

Figure 1

(See Figure 2
for jumper
configuration.)

Figure 2:
Converted 115 Volt
30 amp jumper configuration

x
Electrical
Requirements

Page 8
x

30 Amp Subpanel Wiring Instructions
NOTE: The subpanel must be placed within 100 feet of the main electrical service panel, and between 5 and 50 feet away
from the spa.
Refer to the wiring diagram below.
1. Connect the #10 AWG, WHITE [NEUTRAL] wire from the main electrical service panel to the subpanel NEUTRAL bar.
2. Connect the #10 AWG, GREEN [GROUND] wire from the main electrical service panel to the subpanel GROUND bar.
3. Connect the #10 AWG, BLACK [L1] wire from the main electrical service panel to the subpanel [terminal L1].
4. Check the connections internal to the subpanel and be sure that a pigtail wire exists between the neutral bar and the
30 amp breaker. NEVER remove the pigtail wires!
5. Inside the control panel, locate the terminal block (TB-1).
6. Remove existing power cord.
7. Connect the #10 AWG, BLACK wire from the subpanel 30 amp breaker [terminal L1] to TB-1 terminal L1.
8. Connect the #10 AWG, WHITE wire from the subpanel 30 amp breaker [terminal N, load neutral] to TB-1 terminal N.
9. Connect the #10 AWG, GREEN wire from the subpanel GROUND bar toTB-1 terminal GROUND.

The GFCI breaker inside the subpanel supplies all of the power to the spa. Before each use, open the subpanel and press
the TEST button located on the subpanel GFCI breaker. The breaker should snap into the “tripped” position and the spa
should stop operating. Reset the subpanel GFCI breaker by completely pressing the breaker switch down, into the OFF
position. Then, flip the breaker switch up, into the ON position. Power should be restored and the spa should resume
operation.
If the GFCI breaker fails to operate in this manner, it is an indication of an electrical malfunction and the possibility of an
electric shock. Disconnect the power until the fault has been identified and corrected.
IMPORTANT: Should you ever find the need to move or relocate your Hot Spot® Spa, it is essential that you understand
and apply these installation requirements. Your Hot Spot® Spa has been carefully engineered to provide maximum safety
against electric shock. Remember, connecting the spa to an improperly wired circuit will negate many of its safety features.

Page 9
x

Electrical Requirementsx

HOT SPOT RE MODEL
SPA SPECIFICATIONS & ILLUSTRATION
HORIZONTAL DIMENSIONS:

78” (198 cm.) diameter round

HEIGHT (without cover):

29” (74 cm.)

EFFECTIVE FILTER AREA:

30 sq. ft. (2.79 sq. meters)

HEATER:

1000 watts (1.0 kW)

WATER (capacity):

230 gallons (871 liters)

WEIGHT:

200 lbs. dry (91 kg.), 2740 lbs. filled (1243 kg.)
(Includes weight of water and 5 adults @ 175 lbs. each.)

DEAD WEIGHT (filled):

105 lbs. per sq. ft., 510 kg. per sq. meter

ELECTRICAL REQUIREMENTS:

115 volt 15 amp grounded circuit (standard)
115 volt 30 amp grounded circuit (optional – requires 30 amp
subpanel)

NOTE:

30 amp wiring must be performed by a licensed electrician.

CERTIFICATIONS:

ETL Listed, CE Listed

OVERHEAD VIEW
A. Hydromassage Jets
B. Control Panel
C. Hydromassage Jet Comfort Control® lever
D. Jet Pump Anti-Suction Grill
E. Light Lens
F. Filter Compartment Cover

EQUIPMENT COMPARTMENT
1. 1.0 kW Heater
2.

Spa Drain Valve

Electrical control box

Compression Unions

Jet Pump

Spa Specifications

Page 10

HOT SPOT SE MODEL
SPA SPECIFICATIONS & ILLUSTRATION
HORIZONTAL DIMENSIONS:

78” (198 cm.) square

HEIGHT (without cover):

29” (74 cm.)

EFFECTIVE FILTER AREA:

30 sq. ft. (2.79 sq. meters)

HEATER:

1000 watts (1.0 kW)

WATER (capacity):

270 gallons (1022 liters)

WEIGHT:

250 lbs. dry (113 kg.), 3285 lbs. filled (1490 kg.)
(Includes weight of water and 5 adults @ 175 lbs. each.)

DEAD WEIGHT (filled):

100 lbs. per sq. ft., 490 kg. per sq. meter

ELECTRICAL REQUIREMENTS:

115 volt 15 amp grounded circuit (standard)
115 volt 30 amp grounded circuit (optional – requires 30 amp subpanel)

NOTE:

30 amp wiring must be performed by a licensed electrician.

CERTIFICATIONS:

ETL Listed, CE Listed

OVERHEAD VIEW
A. Hydromassage Jets
B. Control Panel
C. Hydromassage Jet Comfort Control® lever
D. Jet Pump Anti-Suction Grill
E. Light Lens
F. Filter Compartment Cover

EQUIPMENT COMPARTMENT
1. 1.0 kW Heater
2.

Spa Drain Valve

Electrical control box

Compression Unions

Jet Pump

Page
Page11
x

Spa Specificationsx

HOT SPOT RLX MODEL
SPA SPECIFICATIONS & ILLUSTRATION
HORIZONTAL DIMENSIONS:

78” (198 cm.) diameter round

HEIGHT (without cover):

32.5” (82.5 cm.)

EFFECTIVE FILTER AREA:

30 sq. ft. (2.79 sq. meters)

HEATER:

1000 watts (1.0 kW)

WATER (capacity):

245 gallons (927 liters)

WEIGHT:

210 lbs. dry (95.3 kg.), 2870 lbs. filled (1302 kg.)
(Includes weight of water and 5 adults @ 175 lbs. each.)

DEAD WEIGHT (filled):

105 lbs. per sq. ft., 510 kg. per sq. meter

ELECTRICAL REQUIREMENTS:

115 volt 15 amp grounded circuit (standard)
115 volt 30 amp grounded circuit (optional – requires 30 amp subpanel)

NOTE:

30 amp wiring must be performed by a licensed electrician.

CERTIFICATIONS:

ETL Listed, CE Listed

OVERHEAD VIEW
A. Hydromassage Jets
B. Control Panel
C. Hydromassage Jet Comfort Control® lever
D. Jet Pump Anti-Suction Grill
E. Light Lens
F. Filter Compartment Cover
G. 6 Precision® Jets
H. Adjustable rotary hydromassage jet
I.

Floor Drain

EQUIPMENT COMPARTMENT
1. 1.0 kW Heater
2.

Spa Drain Valve

Electrical control box

Compression Unions

Jet Pump

Spa Specifications

Page 12

HOT SPOT SLX MODEL
SPA SPECIFICATIONS & ILLUSTRATION
HORIZONTAL DIMENSIONS:

78” (198 cm.) square

HEIGHT (without cover):

32.5” (82.5 cm.)

EFFECTIVE FILTER AREA:

30 sq. ft. (2.79 sq. meters)

HEATER:

1000 watts (1.0 kW)

WATER (capacity):

285 gallons (1078 liters)

WEIGHT:

279 lbs. dry (126.5 kg.), 3434 lbs. filled (1557 kg.)
(Includes weight of water and 5 adults @ 175 lbs. each.)

DEAD WEIGHT (filled):

105 lbs. per sq. ft., 510 kg. per sq. meter

ELECTRICAL REQUIREMENTS:

115 volt 15 amp grounded circuit (standard)
115 volt 30 amp grounded circuit (optional – requires 30 amp subpanel)

NOTE:

30 amp wiring must be performed by a licensed electrician.

CERTIFICATIONS:

ETL Listed, CE Listed

Floor Drain

EQUIPMENT COMPARTMENT
1. 1.0 kW Heater
2.

Spa Drain Valve

Electrical control box

Compression Unions

Jet Pump

Page 13

Spa Specifications

III. OPERATING INSTRUCTIONS
START-UP AND REFILL PROCEDURES
Your Hot Spot® Spa has been thoroughly tested during the manufacturing process to ensure reliability and long-term
customer satisfaction. A small amount of water may have remained in the plumbing after testing and, as a result, may have
spotted the spa shell or the spa siding prior to delivery. Before filling the spa, wipe the spa shell clean with a soft rag.
The following instructions must be read and followed exactly to ensure a successful start-up or refill.

CAUTIONS
• Do not fill the spa with hot water, as tripping of the high-limit thermostat may result.
• Do not connect power to an empty spa. Power to the spa automatically activates critical components
within the spa, such as Controls, the Heater and other systems. If power is supplied to these components
prior to the spa being filled, the components will be damaged, and this may result in a non-warranty
component failure.
• Do not use your spa after filling until all of the steps listed below are completed.
• Do not add chlorine if treating your spa with polyhexamethylene biguanide (Biguanide, PHMB, eg.
BaquaSpa™) sanitizer.
1. Close the drain and fill the spa with water through the filter compartment. The water level of your Hot Spot® Spa should
be maintained at six (6) inches below the bar top (top of the spa).
RECOMMENDED: Use the FreshStart™10,000 Pre-filter to remove unwanted contaminants from the tap water.
IMPORTANT: Watkins Manufacturing Corporation does not recommend that the spa be filled with “softened” water,
as this may damage the spa’s equipment.
2. AFTER the spa has been filled with water and the equipment compartment door is secured, power must be applied to
the spa.
• Cord connected 115 Volt 15 amp Models – Connect the plug to the waterproof receptacle and push the Reset
button on the GFCI.
• Converted 115 Volt 30 amp Models – Open the door of the electrical subpanel and reset the GFCI breaker. Close
and secure the subpanel door.
3. The jet pump, heating system and all internal plumbing will achieve a partial prime as the spa is filled. To check the
operation of the jet system and remove any remaining air from the heating system, push the JETS button twice to
make the jet pump run on high speed for one minute. Once the jet system is fully operational (as indicated by strong,
non-surging jets), priming of the spa is complete.
IMPORTANT: The air control which is located on the top of the spa shell and labeled “Comfort Control®” should be set
to the MAX position when checking jet operation. Always turn the air control to the MIN position anytime the spa is not
being used. This will help to make the spa operate more quietly and heat more efficiently when the cover is in place.
4. Adjust Total Alkalinity (TA) to 125 ppm, Calcium Hardness (CH) to 150 ppm, then spa water pH to between 7.2 and 7.4.
These procedures are listed in the “Water Quality and Maintenance” section.
IMPORTANT: Add spa water chemicals directly into the filter compartment with the jet pump on high speed for at
least ten minutes.
OPERATION NOTE: Adjusting the Total Alkalinity as the first step is important, as out-of balance TA will affect your
ability to adjust the pH correctly and will prevent the sanitizer from operating effectively.
5. Superchlorinate the spa water by adding 1-1/2 teaspoons of chlorine (sodium dichlor) per 250 gallons of spa water.
Run the jet pump (push the JETS button twice to make the pump run on high speed) for 10 minutes.
6. Set the temperature control to the desired temperature (between 100°F and 104°F), then place the vinyl cover on the
spa and allow the water temperature to stabilize (approximately 24 hours). Make sure you secure the cover in place
using the cover locks. Periodically check the spa water temperature. When the water temperature climbs above 90°F,
proceed to the next step.
7. Turn on the jets (push the JETS button twice to make the pump run on high speed) for 10 minutes to circulate the spa
water. After the cycle is complete, test the spa water for Free Available Chlorine (FAC) residual. If the residual is
between 3 and 5 ppm on the test strips (found in the test kit) go on to the next step. If the residual is less than 3 ppm,
superchlorinate the spa water by adding 1-1/2 teaspoons of chlorine (sodium dichlor) per 250 gallons of spa water.
Run the jet pump (push the JETS button twice to make the pump run on high speed) for 10 minutes.
8. Recheck the Total Alkalinity (TA) at 125 ppm, Calcium Hardness (CH) at 150 ppm, then spa water pH at between 7.2
and 7.4.

Operating Instructions

Page 14

Operational Note: Make sure you adjust your Total Alkalinity first, as an out-of-balance condition will affect your ability to
adjust the pH correctly, and will prevent the sanitizer from operating effectively. The spa is ready for use when the
chlorine level remains between 3 ppm and 5 ppm.
9. The spa temperature is pre-programmed to reach 102°F, and will normally do so within 18 to 24 hours; thereafter, the water
will remain within 3°F of the set temperature.
OPERATION NOTES:
1. The Hot Spot® Spa is equipped with a 10-minute timer delay on the heating/maintenance mode. Whenever the jet pump
has been turned off (and a three-degree temperature drop has occurred) or the temperature control has been turned up, it
will take 10 minutes before the low speed of the jet pump and heater become activated. Always push the JETS button to
turn off the jet pump when exiting the spa. In the standard 115 volt 15 amp electrical configuration, the heating system
does not operate simultaneously with the high speed pump. On the other hand, in the optional 115 volt 30 amp system, the
heating system does operate simultaneously with the high speed pump.
2. The spa controller has an automatic two-hour “time-out” feature should the high-speed jet mode be left on inadvertently.
After two hours of continuous operation, the controller will automatically return to the maintenance/heating mode.
3. The spa controller also has a six-hour “time out” feature should the light be left on inadvertently. After six hours of
continuous operation, the controller will automatically turn the light off.

HEATING AND HYDROMASSAGE SYSTEMS
The Hot Spot® Spa uses a two-speed jet pump to operate its hydromassage jets and to circulate the spa water through the
heating system. The low-speed mode of the pump, which is activated automatically by the control thermostat, will cause the
spa water to be drawn slowly in through the filter, the heater, and into the pump. The pump, in turn, will push the water back
into the spa through the jets. When the JETS button is pushed one time, the spa user can activate the low speed of the jet
pump. (The heater may or may not be on, depending on whether the control thermostat has indicated a demand for heat.)
When the JETS button is pushed a second time, the high speed of the jet pump will be activated. (This will automatically
deactivate the heater if it is operating in a standard 15 amp system.)
In the optional 115 volt 30 amp electrical system, if a drop in the water temperature has occurred, the spa heater will operate
simultaneously when the jet pump is operating on high speed. On the other hand, in a standard 115 volt 15 amp electrical
system, the spa heater will not operate simultaneously when the jet pump is operating on high speed, even if a drop in the water
temperature has occurred. In either electrical configuration, when the high-speed mode of the jet pump is turned off, the spa will
enter a ten-minute “tranquil mode.” During this time the heating system (and simultaneous operation of the jet pump at low
speed) will not operate (unless the JETS button is pushed), even if the water temperature has dropped below the control setting.
Once the 10-minute period has expired, the spa controller will switch to the maintenance mode and the heating system will be
automatically activated.
The Hot Spot® Spa is equipped with a state-of-the-art heating system. The system uses an exclusive “flow through” No-Fault®
1000 stainless steel, high watt density heater that is practically impervious to scaling and corrosion (the two major causes of
heater failure).
IMPORTANT: The 115 volt electrical system of the Hot Spot® Spa is not convertible to a 230 volt system. Any modification to
the original equipment will void the spa’s ETL Listing, resulting in an unsafe spa and voiding the spa’s warranty!

CIRCULATION CYCLE SWITCH
The circulation cycle switch is primarily used when the ambient temperature remains high for extended periods of time. In this
scenario, the heater may not cycle on because the spa water temperature does not cool. If the heater does not cycle on, the low
speed jet pump will not automatically engage. This is very critical when using the FreshWaterAg+® Silver Ion Purifier, which relies
on circulation to disperse silver ions throughout the spa. When engaged, the circulation switch will activate the low speed jet
pump for a four-hour circulation cycle. If, during the circulation cycle, a user enters the spa and turns on the high speed jet
pump, the circulation cycle will pause. When the high speed pump is shut off, the circulation cycle will resume (from the point in
the circulation cycle when the high speed was initially engaged) to completion.
The circulation cycle begins when the switch is initially switched into the ON position. Thereafter, the circulation cycle will repeat
for the same time every day until the switch is shut off. The only exception occurs in the event of a power failure. If power is
disconnected from the spa when the circulation switch is in the ON position, the circulation cycle will reset and engage when
power is reapplied. Therefore, if you have turned your switch on at 8 am, the low speed jet pump will be activated from 8 am to
noon. The cycle will repeat the next day (at 8 am) as long as the switch remains on. However, if a power failure occurs at 10 am,
and power is reapplied at 10:30 am, the cycle will reset and the low speed jet pump will activate from 10:30 am to 2:30 pm.

To activate the circulation timer:
1. Determine the time of day at which you would like the pump to activate the circulation cycle. It is best to choose the cooler
hours of the day, such as morning or evening.
2. Locate the Light button, the Temp Plus (+) and the Temp Minus (-) buttons on the control panel.

Page 15

Operating Instructions

3. To turn the circulation cycle on, press and hold the Light button for three seconds. The display will then read “OFF.” Press the Temp Plus (+)
button within three seconds. The display will read “ON” and the circulation cycle LED will illuminate. Finally, press the Light button again within
three seconds to confirm activation of the circulation cycle.
4. To turn the circulation cycle off, press and hold the Light button for three seconds. The display will then read “ON.” Press the Temp Minus (-)
button within three seconds. The display will read “OFF” and the circulation cycle LED will go dark. Finally, press the Light button again within
three seconds to confirm deactivation of the circulation cycle.
NOTE: The circulation switch should remain off except in conditions where the ambient temperature remains very high for extended periods of
time.

HYDROMASSAGE JETS
A. On the Hot Spot® RE and SE models, the hydromassage jet nozzles are directional. The intensity of these jets is determined by the volume of
air which is introduced into the jet chambers, where it mixes with the water stream. The air control valve is used to change the intensity of all
five jets simultaneously. The intensity of individual hydromassage jets cannot be adjusted separately.
ACCESSORY NOTE: Ask your Hot Spot® Spa Dealer about Micro’ssage Rotating Jet Kits, which can be installed easily in your spa in place
of directional nozzles to vary the effect of the jets.
B. On the Hot Spot® RLX and SLX models, the Comfort Control® lever is used to change the intensity of all jets simultaneously. Each jet is also
individually adjustable; simply turn the faceplate clockwise to decrease the jet pressure or counterclockwise to increase the jet pressure.
Three of the four hydromassage jets contain directional nozzles, while the remaining one contains a dual port rotary nozzle. The directional nozzles
and dual port rotary nozzle can be placed in any jet location desired. The nozzles can be removed by grasping the nozzle and gently pulling away
from the jet faceplate. To install a new nozzle, align the four prongs on the rear of the nozzle with the four holes in the interior of the jet faceplate
and press the nozzle into place. The nozzle will snap into place.
ACCESSORY NOTE: Additional Rotary Jet Kits are available from your Hot Spot® Spa Dealer.

PRECISION® JETS
Precision® Jets are in groups of six (in the RLX and SLX models only). They are designed to perform a soft, soothing massage on your back and
shoulders. Adjust their pressure using the Comfort Control® lever.

SAFETY EQUIPMENT
A. GFCI: The Ground Fault Circuit Interrupter, located on the end of the power cord, is a safety device that is designed to sense as little as 5
milliamps of electrical current leakage to ground. It is very important to protect a GFCI from rain and other moisture. Watkins Manufacturing
Corporation recommends that the GFCI be tested monthly to ensure it is functioning correctly.

To test the GFCI:
Before each use, with the spa operating, push the TEST button (located on the front of the GFCI). The spa should stop operating and the
RESET button should pop up. Reset the GFCI by pushing the RESET button. The spa will now operate normally. If the interrupter does not
perform in this manner, it is an indication of an electrical malfunction and the possibility of an electric shock. Unplug the spa until the fault has
been identified and corrected.
B. HEATER HIGH-LIMIT SWITCH: The heater high-limit thermostat is located on the heater assembly. If for any reason the internal temperature
of the heater exceeds 120°F, the high-limit circuit will trip and turn off the spa. This is indicated on the control panel display by the code “HL.”
The heater high-limit may be reset when the water temperature within the heater has cooled to approximately 110°F. Reset the heater highlimit by simply disconnecting power to the spa for thirty seconds. The cause of the overheating must be located to prevent a recurrence. The
most common cause of limit-tripping is inadequate water flow through the heating system. This may be caused by an obstruction within the
pump water lines (filter, pump intakes or internal plumbing), the non-function of the low-speed mode of the jet pump, or the malfunction of
the control thermostat. Once the cause has been identified and corrected, and the sensor has cooled, reset the switch.
C. PRESSURE SWITCH: The pressure switch is located on the heater, and is designed to prevent heater operation during a no or low flow
condition. If for any reason flow through the heater is reduced or stopped, the pressure switch will trip. This is indicated on the control panel
display by the code “FLO.” The most common causes of inadequate heater flow are a dirty or clogged filter, obstruction in the plumbing lines,
and non-operation of the low speed heat pump.
Additionally, the control panel display will display the code “FLC” if the pressure switch senses flow through the heater when the jet pump is
not activated. Contact your Authorized Service Technician.

COMFORT CONTROL® SYSTEM
COMFORT CONTROL® AIR VALVE: Turning the Comfort Control® selector to MAX allows for the same volume of air to flow to all individual jets
and Precision® Jets simultaneously. On the Hot Spot® RLX and SLX models, the jet faceplate is then used to control the intensity of each
hydromassage jet.
NOTE: Always turn the Comfort Control® selector to the MIN position anytime the spa is not being used. This will help make the spa operate more
quietly and heat more efficiently when the vinyl cover is in place.

Operating Instructions

Page 16

SPA CONTROL PANEL
A. JET BUTTON: Use the JET button to activate the
jet pump. Pushing the JET button once will
activate the jet pump on low speed. Pushing it a
second time will activate the high speed mode of
the jet pump. A third push will deactivate the jet
pump.

Set Temperature
Display

Jet LED

Light LED

Circulation
Cycle LED

The jet LED on the control panel will illuminate
whenever the jet pump is activated (either high or
low speed) using the JET button. The LED does
not illuminate when the jet pump comes on
automatically to heat the water.
B. LIGHT BUTTON: The Hot Spot® Spa is equipped
with a low-voltage spa light. Push the LIGHT
button to turn it on. Push it a second time to turn it
off. For your spa enjoyment, a blue and a red lens
cover have been included with the spa’s owner’s
package. The original clear lens is not removable –
a colored lens can be snapped over the clear lens
to achieve the desired color.

Jet
Button

Light
Button

Temperature
Plus
Temperature
Minus

When the light is activated, the light LED on the
control panel will illuminate.
C. TEMPERATURE CONTROLS: The set temperature range is from 50°F to 104°F (10°C to 40°C). Higher
temperatures can be reached by using one of three codes: U1, U2 and U3. These are progressively warmer, with
U3 the highest at approximately 106°F. (The temperature of any setting may rise slightly depending on the current
use and condition of your spa, and outside temperature.)
The factory-set temperature of the spa water is 102°F (39°C). Whenever power is disconnected and then
reconnected to the spa, the water temperature will automatically seek this temperature, unless you set it otherwise
using the temperature controls.
Pressing the Temp Plus (+) button displays the spa’s set temperature. To increase the set temperature, press the
Temp Plus (+) button again, once for each degree of increased temperature desired. If you hold the button down,
the set temperature will increase by one degree every half-second.
To decrease the set temperature, press the Temp Minus (-) button, once for each degree of decreased temperature
desired. If you hold the button down, the set temperature will decrease by one degree every half-second.
D. CIRCULATION CYCLE LED: The circulation cycle LED will illuminate when the circulation cycle is activated. See the
Circulation Cycle Switch section of this manual for instructions on activating the circulation cycle.

IV. SPA CARE AND MAINTENANCE
GENERAL INFORMATION
our Hot Spot® Spa is manufactured from the highest quality, most durable materials available. Even so, the spa care
and maintenance program you develop will ultimately determine how long your spa and its individual components
will last. Regular maintenance and following the advice in this section will help you to protect your investment.

DRAINING THE WATER
Detergent residues from bathing suits and soap film from your body may gradually accumulate in your spa’s water.
Normally, in about four months the water will become sudsy and should be replaced. Showering without using soap
prior to entering the spa or using only the rinse cycle when laundering your bathing suit will help to reduce detergent
residue in the spa water. Important: Remember to change your water every four months.

TO DRAIN YOUR SPA:
1. Disconnect the spa from the power supply by the appropriate method:
Standard 115 Volt 15 Amp Models - Disconnect the power cord from the house receptacle.
Converted 115 Volt 30 Amp Models - Trip the GFCI breaker located in the subpanel.

Page 17

Spa Care and Maintenance

2. Remove the screws from the equipment access door and remove the door completely. Locate the main drain valve for the spa
and remove the drain cap. Attach the inlet of a garden hose to the drain valve (to avoid flooding of the foundation surrounding
the spa) and route the outlet of the hose to an appropriate draining area.
NOTE: Spa water with a high sanitizer level may harm plants and grass.
3. Open the valve by turning the knob counterclockwise. The spa will drain almost completely by gravitational flow. Any
remaining water should be removed by bailing with a soft plastic cup.
IMPORTANT: All Hot Spot® Spa models will drain almost completely through the main drain valve. Use a soft plastic cup to
bail any remainging water. Equipment such as the jet pump and heating system will drain. Any water remaining within the
plumbing after draining will only need to be removed if the spa is being winterized.
4. When empty, inspect the spa shell and clean as required. (Follow the Care of the Exterior Finish instructions.)
5. Remove the filter cartridge and clean as required (see the Filter Maintenance section).
6. Replace the filter cartridge.
7. Close the drain valve and reinstall the drain cap.
8. Replace or close the equipment access door and replace the screws.
9. Refill the spa through the filter compartment BEFORE restoring power.
IMPORTANT: Always clean the filter cartridge each time the spa is drained for cleaning. Always sanitize and chemically
balance the spa water after cleaning and refilling the spa.

FILTER MAINTENANCE
As with any water filtering system, the filter cartridge may become clogged, resulting in reduced water flow. In your Hot Spot® Spa,
it is important to maintain a clean, unobstructed filtering system to ensure maximum performance from the jets. Watkins
Manufacturing Corporation recommends the filter cartridge be cleaned with a filter cleaner at least once every month.
WARNING: The frequency and duration of use, and the number of occupants all contribute to determining the appropriate time
between filter cleanings. More use means that more frequent filter cleanings are required. Failure to maintain the filter cartridge in a
clean, unobstructed condition will result in reduced water flow through the heater assembly that may cause the High Limit
Thermostat or Pressure Switch to trip. If this high limit or pressure switch trip occurs during sub-freezing temperatures and goes
unnoticed, the spa water may freeze. Any damage to the spa (due to freezing) caused as a result of poor maintenance (stated
under misuse or abuse in the Hot Spot® Spa Limited Warranty), will not be covered by your spa warranty.
DANGER: To reduce the risk of injury to persons using the spa, DO NOT use the spa with the filter cartridge or filter standpipe
removed!

FILTER CARTRIDGE REMOVAL AND CLEANING
1. Disconnect power to the spa.
2. Remove and carefully set aside the filter compartment cover.
3. Remove any floating items from within the filter compartment.
4. Turn the filter retainer handle (located on the top of the filter cartridge) counterclockwise until the retainer can be removed from
the filter standpipe.
5. Remove the filter retainer and cartridge.
SERVICE NOTE: Never remove the filter standpipe. Debris may find its way into the internal plumbing which may result in
blockage. NEVER REMOVE SUCTION FITTINGS.
6. Always clean the filter using a filter degreaser to remove mineral and oil buildup. Simply soak the filter in the degreaser
(according to the degreaser directions), then place the filter on a clean surface and spray until clean using a garden hose. It
may be necessary to rotate the filter while spraying to remove any debris lodged between the filter pleats.
7. To reinstall the filter cartridge, reverse the order of steps in which it was removed. Do not overtighten!

CARE OF THE EXTERIOR FINISH
SPA SHELL
The Hot Spot® RE and SE models have a high quality Endurol® shell. The Hot Spot® RLX and SLX models have a high quality
granite-like shell. Stains and dirt generally will not adhere to your spa’s surface. Most household chemicals are harmful to your
spa’s shell. The only products which have passed the manufacturer’s tests are Soft Scrub® and Windex.® Sodium bicarbonate
(baking soda) can also be used for minor surface cleaning. A soft rag or a nylon scrubber should easily remove most dirt. Always
thoroughly rinse off any spa shell cleaning agent with fresh water.
Cleaning of the surface at the waterline to remove any body oil or “bathtub ring” can be done easily with baking soda and a soft

Spa Care and Maintenance

Page 18

sponge. When your spa has been drained for cleaning, the use of a spa/tub surface cleaner is recommended to clean the spa shell.
The use of a soft rag, soft sponge or nylon scrubber should easily remove most dirt build-ups. Always thoroughly rinse off any spa
shell cleaning agent with fresh water. The use of a spa polish is recommended after the spa shell has been dried, to polish the
surface.
SERVICE NOTES:
1. Iron and copper in the water can stain the spa shell if allowed to go unchecked. Ask your Hot Spot® Spa Dealer about a Stain
and Scale Inhibitor to use if your spa water has a high concentration of dissolved minerals.
2. The use of alcohol or any household cleaners other than those listed to clean the spa shell surface is NOT recommended. DO
NOT use any cleaning products containing abrasives or solvents since they may damage the shell surface. NEVER USE HARSH
CHEMICALS! Damage to the shell by the use of harsh chemicals is not covered under the warranty.
3. Your Dealer may also stock products which can be used in your spa to help control “bathtub ring.”
IMPORTANT: Some surface cleaners contain eye and skin irritants. Keep all cleaners out of the reach of children and use care
when applying.

SPA SIDING
The spa siding of the Hot Spot® Spa is manufactured from Endurol®, a durable U.V.-resistant material. Even so, monthly cleaning
and periodic conditioning is recommended to maintain its beauty. To clean and condition the siding:
1. With a garden hose, lightly spray the siding to rinse away and loosen any dirt or debris.
2. Using a large sponge or soft cloth, and using a very mild soap solution (1 teaspoon dishwashing liquid with 2 gallons of warm
water), scrub the surface in a circular motion. Use care not to let the siding dry with a soap film on it before it can be rinsed clean.
3. Lightly spray the spa siding to rinse away the cleaning solution.
IMPORTANT: To avoid soap getting into the spa water, the vinyl spa cover should be left on the spa during cleaning and rinsing.

VINYL COVER
The Hot Spot® Spa comes with a vinyl cover. The vinyl spa cover is an attractive, durable foam insulation product. Monthly cleaning
and conditioning are recommended to maintain its beauty.

To clean and condition the vinyl cover:
1. Remove the cover from the spa and gently lean it against a wall or fence.
2. With a garden hose, spray the cover to loosen and rinse away dirt or debris.
3. Using a large sponge and/or a soft bristle brush, and using a very mild soap solution (1 teaspoon dishwashing liquid with 2
gallons of water) or baking soda (sodium bicarbonate), scrub the vinyl top in a circular motion. Do not let the vinyl dry with a soap
film on it before it can be rinsed clean.
IMPORTANT: To avoid soap getting into the spa water, the spa cover should not be on the spa during cleaning. If you have a
retractable cover system installed on your spa it is recommended that you use only water to clean your cover in order to avoid
getting soap into your spa water.
4. Scrub the cover’s perimeter and side flaps. Rinse clean with water only.
5. Rinse off the underside of the cover with water only (do not use soap), and wipe it clean with a dry rag.
6. To condition the cover after cleaning, apply a thin film of Cover Shield to the vinyl surface and buff to a high luster.
SERVICE NOTE: To remove tree sap, use cigarette lighter fluid (not charcoal lighter fluid). Use sparingly, and rinse with a saddle
soap solution immediately afterwards, then wipe dry.

Important reminders:
•
•
•
•
•

DO remove snow buildup to avoid breakage of the foam core from the additional weight of the snow.
DO lock cover straps to secure the cover when the spa is not in use.
DO NOT drag or lift the spa cover using either the flaps or the tie-down straps.
DO NOT walk, stand, or sit on the cover.
DO NOT place any metal or heat transferring object on the cover or place any type of plastic tarp or drop cloth over the
cover as this may result in a melted foam core, which would not be covered under the warranty.
• DO NOT use any lifting mechanisms, chemicals or cleaners except those recommended by Watkins Manufacturing
Corporation or its Authorized Sales and Service Dealer.
IMPORTANT: Whenever the spa is not in use, it is essential that the cover be in place. When filled, this ensures effective
temperature maintenance and economical operation. When empty, this prevents potential damage to the surface finish of
the interior walls, which can result from the excessive heat of the sun. This type of damage is specifically excluded from
warranty coverage.

Page 19

Spa Care and Maintenance

VACATION CARE INSTRUCTIONS
If you plan to be away, follow these instructions to ensure the water quality of your spa is maintained:

SHORT TIME PERIODS (3-5 DAYS):
1. Adjust the Total Alkalinity, Calcium Hardness and pH by following the instructions outlined in the Water Quality and
Maintenance section.
2. Sanitize the water by following the shock procedures also listed in the Water Quality section. Make sure the air control
is turned to the OFF position.
3. Lock your cover in place using the cover-locks.
4. Upon your return, sanitize the water by following the shock procedures, and balance the pH.

LONG TIME PERIODS (5-14 DAYS):
Prior to leaving:
1. At least one day before you leave, set the temperature to 80°F.
IMPORTANT NOTE: Spa water oxidizers such as sodium dichlor chlorine maintain their level of effectiveness
substantially longer in warm water (80°F) than in hot water (101°F to 104°F).
2. Adjust the Total Alkalinity, Calcium Hardness and pH as required. Sanitize the water by following the shock
procedures.

Upon your return:
3. Sanitize the water by following the shock procedures. Return the set temperature to its original setting. The spa water
will be safe for you to use once the Free Chlorine Residual level has dropped below 5.0 ppm.
NOTE: If you will not be using your spa for an extended period of time (in excess of 14 days) and an outside
maintenance service (or neighbor) is not available to assist with the water maintenance, draining or winterizing of the
spa is recommended.

PREVENTION OF FREEZING
Your Hot Spot® Spa has been designed and engineered for year-round use in any climate. In some areas, extremely cold
temperatures (below 10°F) combined with strong winds may cause partial freezing of the jet pump, even though the water
inside the spa remains at the selected temperature. The energy efficiency of the spa may also decrease during these cold
periods, as the heater will cycle more frequently. As an additional precaution against partial freezing of some of the
components, the equipment compartment door can be insulated with a fiberglass insulation blanket (available from your
Hot Spot® Spa Dealer). This additional insulation will also help to maximize the spa’s energy efficiency.
NOTE: When warmer weather returns (approx. 60°-70°F), the insulating blanket must be removed to prevent overheating
of the jet pump.
Please contact your Hot Spot® Spa Dealer for additional information or to order the insulation blanket.

WINTERIZING
1. To winterize the spa, first perform the Draining the Water instructions mentioned at the beginning of this section. Then:
2. Remove the filter cartridge, clean and store in a dry place. Clean the filter compartment cover as well.
3. Wipe the inside of the spa and filter compartment completely dry.
4. To ensure the internal plumbing has drained completely and to remove any water that may be remaining in the jet
pump, a wet/dry shop vac can be used at the spa drain. If you do not have access to a wet/dry shop vac, carefully lift
the side of the spa (opposite the equipment compartment) approximately one foot off the ground to assist in drainage.
If necessary, use a soft plastic cup to bale remaining water from the spa. Once you are sure the internal plumbing has
drained completely, set the spa flat again. Leave the drain valve open during winterizing months
5. On standard 115 volt 15 amp models, coil the power cord and place it in the equipment compartment. On converted
(hard wired) 30 amp models, make sure that the GFCI breaker inside the subpanel remains in the OFF position during
the winterization months.
6. Place the cover back on the spa and secure. Cover the vinyl cover with a large board to distribute the weight from
snow and ice evenly and to prevent breakage of the foam core.

Spa Care and Maintenance

Page 20

SERVICE NOTES:
• Leave the main drain valve open approximately 1/4 turn during the winterizing months.
• You may wish to remove the filter standpipe to facilitate draining of the filter compartment.
NOTE: Remove any debris present on the floor of the filter compartment prior to removal of the filter standpipe
(debris may enter the plumbing and block the lines). When replacing, do not overtighten.

To Reactivate:
Reinstall the filter cartridge, close the main drain and reinstall the drain cap. Follow the Start-Up and Refill Procedures to
make your Hot Spot® Spa operational.
IMPORTANT: Always keep spa covered when not in use (empty or full).

V. Water Quality And Maintenance
I

t’s important to have clean water. Water maintenance is one of the least understood, yet most important areas of spa
ownership. Your dealer can guide you through the process of achieving and maintaining perfect water in your spa, given
your local conditions. Your program will depend on your water’s mineral content, how often you use your spa, and how
many people use it.
Watkins recommends that you either use an entirely chlorine-based system, or an alternative system which uses silver ions
(the FreshWaterAg+® Silver Ion Purifier).

GENERAL INFORMATION
THE THREE FUNDAMENTAL AREAS OF WATER
MAINTENANCE:
• Water Filtration
• Water Sanitation
• Chemical Balance/pH Control
Your spa’s filter system does not remove bacteria or viruses.
Water Sanitation is the responsibility of the spa owner, achieved through the regular and periodic (daily, if necessary)
addition of an approved sanitizer. The sanitizer will chemically control the bacteria and viruses present in the fill water or
introduced during use of the spa. Bacteria and viruses can grow quickly in undersanitized spa water.
The water’s chemical balance and pH control are also the responsibility of the spa owner. You’ll have to add chemicals to
maintain proper levels of Total Alkalinity (TA), Calcium Hardness (CH) and pH. Proper water balance and pH control will
minimize scale buildup, extend the life of the spa, and allow the sanitizer to work at top efficiency.

METHODS FOR TESTING THE SPA WATER
Accurate water testing and analysis is an important part of effectively managing your spa water. To follow the Hot Spot®
Spa recommended program, you must have the ability to test for:
• Total Alkalinity (TA)
• Calcium Hardness (CH)
• pH
• Sanitizer
Two types of testing methods are recognized and recommended by Watkins:
The Reagent Test Kit is the preferred method and provides the highest level of accuracy. The reagents come in either
liquid or tablet form.
Test Strips are a convenient testing method used by many spa owners. Keep in mind that test strips are susceptible to
heat and moisture contamination, which will result in inaccurate readings.
IMPORTANT: Always read and carefully follow the directions included with the Test Kit or Test Strips to ensure the
accuracy of the test results.

Page 21

Water Quality and Maintenance

HINTS FOR SUCCESSFUL WATER TESTING
When using the reagent test kit:
• Always take water samples 12”- 18” below the water surface.
• Rinse the test cells before and after each use.
• Do not dispose of test samples into the spa water.
• When adding drops of chemicals from the kit (the reagents) into the test block, hold the bottle vertically and add
the drops slowly to be sure the correct quantity is used.
• The reagents should be replaced on a yearly basis to maintain the accuracy of the test results.
When using either a calibrated test block or test strips, test comparisons should be made in natural light.

BASIC CHEMICAL SAFETY
When using chemicals, read the labels carefully and follow directions precisely. Though chemicals protect you and your
spa when used correctly, they can be hazardous in concentrated form. Always observe the following guidelines:
• Allow only a responsible person to handle spa chemicals. Keep them out of the reach of children.
• Accurately measure the exact quantities specified, never more. Do not overdose your spa.
• Handle all containers with care. Store in a cool, dry, well ventilated place.
• Always keep chemical containers closed when not in use. Replace caps on their proper containers.
• Don’t inhale fumes or allow chemicals to come in contact with your eyes, nose, or mouth. Wash your hands
immediately after use.
• Follow the emergency advice on the product label in case of accidental contact, or if the chemical is swallowed.
Call a doctor or the local Poison Control Center. If a doctor is needed, take the product container along so that the
substance can be identified.
• Don’t let chemicals get on surrounding surfaces or landscaping.
• Don’t use a vacuum cleaner to clean up chemical spills.
• Never smoke around chemicals. Some fumes can be highly flammable.
• Don’t store any chemicals in the spa equipment compartment.

HOW TO ADD CHEMICALS TO THE WATER
IMPORTANT: All spa water chemicals, including granulated dichlor, MPS, granulated pH increaser or decreaser,
granulated total alkalinity increaser, calcium hardness increaser, liquid stain and scale inhibitor, and liquid de-foamer must
always be added directly into the filter compartment while the jet pump is running in high speed mode, and it must run for
a minimum of ten minutes.

To Administer Spa Water Chemicals:
1. Fold back the cover. Carefully remove and set aside the filter compartment cover.
2. Push the JET button twice to turn the jet pump on in its high speed mode.
3. Carefully measure the recommended amount of chemical and slowly pour it into the filter compartment. Use care not
to splash chemicals on your hands, in your eyes, on the spa shell surface or on the siding.
4. Replace the filter compartment cover. After ten minutes, shut off the jet pump and close and lock the cover to
complete the procedure. Risk of Drowning: Never leave an open spa unattended!
WARNING: High sanitizer levels can cause discomfort to the user’s eyes, lungs and skin. Always allow the sanitizer level to
fall to the recommeded range before using the spa.
IMPORTANT “SUPER CHLORINATION/NON-CHLORINE SHOCK TREATMENT” NOTE: After administering a super
chlorination treatment or non-chlorine shock to your spa, leave the cover open for a minimum of 20 minutes to allow the
oxidizer gas to vent. A high concentration of trapped oxidizer gas which may exist as a result of the shock treatment (not
daily sanitation) may eventually cause discoloration or vinyl degradation to the bottom of the cover. This type of damage is
considered chemical abuse and is not covered under the terms of the limited warranty.
®

THE HOT SPOT SPA WATER MAINTENANCE
PROGRAM
Following the Hot Spot® Spa program will save you time and frustration as well as ensure clear, clean spa water.
IMPORTANT: Each step in your water maintenance program is dependent on the completion of the previous steps.
Omitting a step or failing to reach the recommended range may cause an imbalance in your water’s chemistry.
Unbalanced water chemistry can damage the spa and its components as well as cause discomfort for the user.

Water Quality and Maintenance

Page 22

FILLING THE SPA WITH WATER
™
10,000 Pre-filter when filling

A. To prevent contaminants from entering the spa, Watkins recommends using the FreshStart
the spa with water. Always fill the spa through the filter compartment.
™

B. The FreshStart 10,000 Pre-filter is designed to remove unwanted contaminants such as rust, dirt, detergents and algae
from the fill water. Dissolved minerals and metals such as lead, calcium, copper and iron are not removed.
™
10,000 Pre-filter. When the spa is filled, proceed to the Start-Up and Refill

C. Instructions are included with the FreshStart
Procedures on page 14.

BALANCING THE TOTAL ALKALINITY (TA)
A. The recommended Total Alkalinity (TA) for your spa water is 125-150 ppm.
B. Total Alkalinity is a measure of the total levels of carbonates, bicarbonates, hydroxides, and other alkaline substances
in the water. TA is referred to as the water’s “pH buffer”. In other words, it’s a measure of the ability of the water to
resist changes in pH level.
C. If the TA is too low, the pH level will fluctuate widely from high to low. Fluctuations in pH can cause corrosion or
scaling of the spa components. Low TA can be corrected by adding sodium bicarbonate.
D. If the Total Alkalinity is too high, the pH level will tend to be high and may be difficult to bring down. It can be lowered
by using sodium bisulfate.
E. Once the TA is balanced, it normally remains stable, although the addition of more water with a high or low alkalinity
will raise or lower the TA reading of the water.
F. When the Total Alkalinity is within the recommended range, proceed to the next step.

BALANCING THE CALCIUM HARDNESS (CH)
A. The recommended Calcium Hardness (CH) level for your spa is 150-200 ppm.
B. Calcium Hardness is a measure of the total amount of dissolved calcium in the water. Calcium helps control the
corrosive nature of the spa’s water. That’s why calcium-low water (commonly known as “soft” water) is not
recommended. It is very corrosive to the equipment, and can cause staining of the spa shell. Calcium hardness
increaser is the antidote.
C. If the CH is too high (commonly known as “hard water”), formation of scale on the spa’s shell surface and equipment
can result. CH can be decreased by dilution–a mixture of 75% hard and 25% soft water will usually yield a
reading within the correct range. If soft water is not available or practical for you, a stain and scale control should be
added to the spa water, according to instructions on its label.
D. Once the CH is balanced, it normally remains stable, although the addition of more water with a high or low calcium
content will raise or lower the CH reading of the water.
E. When the Calcium Hardness is within the recommended range, proceed to the next step.

BALANCING THE PH
A. The recommended pH level for your spa water is 7.4-7.6.
B. The pH level is the measure of acidity and alkalinity. Values above 7 are alkaline; those
below 7 are acidic. Maintaining the proper pH level is extremely important for:
• Optimizing the effectiveness of the sanitizer.
• Maintaining water that is comfortable for the user.
• Preventing equipment deterioration.
C. If the spa water’s pH level is too low, the following may result:
• The sanitizer will dissipate rapidly.
• The water may become irritating to spa users.
• The spa’s equipment may corrode.
If the pH is too low, it can be increased by adding sodium carbonate to the spa
water.
D. If the pH level is too high, the following may result:
• The sanitizer is less effective.
• Scale will form on the spa shell surface and the equipment.
• The water may become cloudy.
• The filter cartridge pores may become obstructed.

Page 23

Water Quality and Maintenance

If the pH is too high, it can be decreased by adding sodium bisulfate to the spa water.
NOTE: After adding sodium carbonate or sodium bisulfate, wait two hours before testing the water for pH. Measurements
taken too soon may not be accurate.
E. It is important to check the pH on a regular (weekly) basis. The pH will be affected by the bather load, the addition of
new water, the addition of various chemicals, and the type of sanitizer used.
F. When the pH is within the recommended range, proceed to the final step.

THE WATKINS WATER MAINTENANCE QUICK REFERENCE GUIDE
Ideal Range (ppm)
What Chemicals to Use
Steps

Minimum Maximum

1 Total Alkalinity

To Raise

To Lower

125

150

Sodium Bicarbonate Sodium Bisulfate

2 Calcium Hardness 150

200

Calcium Hardness
Increaser

Use a mixture of
75% hard water
and 25% soft water
or use a Stain and
Scale Inhibitor

Sodium Carbonate

Sodium Bisulfate

3 pH
4 Sanitizer

7.4

7.6

See section on Maintaining the Sanitizer Level

MAINTAINING THE SANITIZER LEVEL
A. Sanitizer is extremely important for killing algae, bacteria and viruses, and preventing unwanted organisms from
growing in the spa. At the same time, you don’t want too high a sanitizer level, or it can irritate your skin, lungs and
eyes.
B. Always maintain the sanitizer level in your spa at the recommended level for each type of sanitizer.
C. Watkins recommends only the following sanitizers:
• FreshWaterAg+® Silver Ion Purifier with potassium monopersulfate or patassium peroxymonosulfate (MPS)
• Sodium Dichloro-s-Triazinetrione (Sodium Dichlor or Chlorine)
™
• Baqua Spa
• Granular bromine
WARNING: DO NOT use tri-chlor chlorine, any type of compressed bromine or chlorine, acid or any type of sanitizer which
is not recommended by Watkins.
Refer to the following two sections to use either the FreshWaterAg+® Silver Ion Purifier or Sodium Dichlor as your sanitizer.

FRESHWATERAg+® SILVER ION PURIFIER
Watkins Manufacturing Corporation highly recommends the use of the FreshWaterAg+® Silver Ion Purifier.
The FreshWaterAg+® Silver Ion Purifier, used in conjunction with the addition of an aggressive oxidizer such as a common
non-chlorine shocking agent (potassium monopersulfate, also known as MPS), will sanitize the spa water.
IMPORTANT: Remember to use MPS designed for use in spas, such as Hot Spring® Spa Shock. Other non-chlorine
shocking agents for swimming pools may contain chemicals incompatible with the FreshWaterAg+® Silver Ion Purifier (such
as blue crystals in MPS). The recommended MPS should have an active ingredient percentage of 30% - 33%.

Water Quality and Maintenance

Page 24

SILVER ION SANITATION
It is important to follow the recommended application and maintenance programs outlined for each product’s use.
To maintain a properly sanitized spa, an oxidizing agent (MPS) must be added to the spa water 15 minutes prior to
each use. If the spa is being used over an extended period of time, such as a whole afternoon or evening, additional
oxidizer will be needed. MPS should be added to the water more frequently (at least every hour) to maintain proper
sanitation.
A weekly “shock treatment” is required, in addition to the normal application of the oxidizer. The shock treatment
quickly destroys any remaining contaminants while revitalizing the silver ion cartridge, allowing the silver ions to continue to
be released into the water. Without this weekly shock treatment, the silver ion cartridge may stop releasing silver ions into
the water and the spa will become undersanitized. This process should always be performed when first filling or refilling
your spa.
To “shock treat” the spa you may use either MPS or sodium dichlor. It will require much less sodium dichlor to administer
the shock treatment than MPS (1 teaspoon of sodium dichlor has sanitizing capabilities comparable to 2 tablespoons of
MPS). Sodium dichlor may be a more appropriate weekly shock for those users that experience heavy bather load
conditions, or when a usual dose of MPS has been underadministered or missed entirely.
IMPORTANT NOTE: As an alternative to monopersulfate (MPS), sodium dichlor may be substituted. One teaspoon of
sodium dichlor equals two teaspoons of monopersulfate.

SANITATION
When:

What to do, if using Monopersulfate (MPS):

What to do, if using Chlorine (Sodium Dichlor):

At spa
startup
or refill

Follow spa Start-Up and Refill Procedures found on
page 14.

NOTE: Use the FreshStart™10,000 Pre-filter when filling
the spa to remove unwanted contaminants.

Prior to
each use

Add one (1) tablespoon of monopersulfate per
250 gallons.

Add one-half (1/2) teaspoon of sodium dichlor per
250 gallons.

Once a
week

Add three (3) tablespoons of monopersulfate per
250 gallons.

Every four
months

Drain and refill your spa.

As needed

Hot Spot® RE & RLX
Hot Spot® SE & SLX

1 tablespoon
1-1/4 tablespoons

Hot Spot® RE & RLX
Hot Spot® SE & SLX

3 tablespoons
3-1/4 tablespoons

Hot Spot® RE & RLX
Hot Spot® SE & SLX

1/2 teaspoon
2/3 teaspoon

Add one and one half (1-1/2) teaspoons of sodium
dichlor per 250 gallons.
Hot Spot® RE & RLX
Hot Spot® SE & SLX

1-1/2 teaspoons
1-3/4 teaspoons

Drain and refill your spa.

Replace the FreshWaterAg+® Silver Ion Purifier.
™

Replace the FreshWaterAg+® Silver Ion Purifier.

NOTE: Use the FreshStart 10,000 Pre-filter when filling
the spa to remove unwanted contaminants.

NOTE: Use the FreshStart™10,000 Pre-filter when filling the
spa to remove unwanted contaminants.

Add three (3) tablespoons of monopersulfate per
250 gallons.

Add one and one half (1-1/2) teaspoons of sodium
dichlor per 250 gallons.

Hot Spot® RE & RLX
Hot Spot® SE & SLX

3 tablespoons
3-1/4 tablespoons

Page 25

Hot Spot® RE & RLX
Hot Spot® SE & SLX

1-1/2 teaspoons
1-3/4 teaspoons

Water Quality and Maintenance

FRESHWATERAg+® SILVER ION PURIFIER
REPLACEMENT INSTRUCTIONS
When replacing the Silver Ion Purifer (every four months), it is highly recommended that the spa be drained and refilled at
the same time. After refilling the spa with water, balance the Total Alkalinity (TA), Calcium Hardness (CH) and pH to the
recommended levels. Shock the spa by adding sanitizer, either MPS or sodium dichlor (See Sanitization Table for details).
1. Fold back the cover.
2. Carefully remove and set aside the filter compartment cover.
3. Remove any floating items within the filter compartment.
4. Locate the grey filter cap. Turn the filter cap counterclockwise until the cap can be removed from the filter standpipe.
5. Remove and clean filter cartridges.
6. Remove the existing FreshWaterAg+® Silver Ion Purifier.
7. Install the new FreshWaterAg+® Silver Ion Purifier into the filter standpipe. Do not force the FreshWaterAg+® Silver Ion
Purifier down into the filter standpipe.
8. Reinstall the cleaned filter cartridge.
9. Replace and secure the grey filter cap.
10. Replace the filter compartment cover.
11. Fold the cover back into place.
WARNING: Never use the spa with the filter cartridge or filter standpipe removed!

SILVER IONS QUESTIONS AND ANSWERS
Question: How are the silver ions actually added to the water?
Answer: The silver ion cartridge contains ceramic beads that are infused with silver. By placing the cartridge in the filter
standpipe, it is subjected to the flow of water created by the jet pump’s operation. The flowing water, through a chemical
erosion process, carries with it the silver ions necessary to add a sanitizing residual to the spa water.
Question: What other types of oxidizers can be used during the active sanitation process?
Answer: As an alternative to the MPS, sodium dichlor (granular chlorine) may be substituted during the active sanitation
process. One teaspoon of dichlor equals two tablespoons of MPS.
Question: What happens if I do not add the weekly shock treatment?
Answer: The contaminants in the water may coat the silver ion cartridge’s ceramic beads, blocking the silver ions’ release
into the water. When this occurs, there will be no residual of silver ions present in the water, eliminating them from the
sanitizing process.
Question: How often should the FreshWaterAg+® Silver Ion Purifier cartridge be replaced?
Answer: The cartridge must be replaced every four months. Please refer to the instructions provided with each
FreshWaterAg+® Silver Ion Purifier cartridge.
Question: Why can’t I use bromine or biguanides instead of MPS or chlorine as my sanitizer?
Answer: Bromine and biguanides will chemically react with the sanitizing action of the silver ions. This will eliminate their
beneficial sanitizing effect.
Question: I see different types of MPS in my local pool supply store. Which one should I use?
Answer: Generally, two types of non-chlorine shock (containing MPS) are available: one for swimming pools and one for
spas. Use only non-chlorine shock designed for use in spas. Non-chlorine shock for pools may contain a clarifier (typically
blue crystals in the shocking agent). The clarifier will react with the silver ions and cause the water to appear cloudy and
reduce the effectiveness of the silver ions. Only MPS (buffered for pH) designed for use in spas with an active ingredient
percentage of 30-33% is recommended.

DOS AND DON’TS
•
•
•
•

DO add MPS (or other approved sanitizing activator) prior to each use.
DO shock the spa weekly with sanitizer (use either MPS or sodium dichlor).
DO change the FreshWaterAg+® Silver Ion Purifier every 4 months.
DO test Total Alkalinity and pH weekly.

Water Quality and Maintenance

Page 26

• DO use MPS for spas only, such as Hot Spring® Spa Shock.
• DO store the MPS in a tightly sealed container in a cool, dry place.
• DON’T use bromine, sodium bromide or biguanides. These are an active sanitizer and will combine with the silver
ions to inactivate them.
• DON’T use a water clarifier. Clarifiers will cause the spa water to become cloudy.

CHLORINE (SODIUM DICHLOR)
A. Sanitizing chemicals, such as chlorine, are oxidants that kill bacteria and viruses in the water. The Free Available
Chlorine (FAC) is a measure of the amount of unused chlorine available to sanitize the spa. The recommended FAC for
your spa water is 3.0-5.0 ppm.
B. Watkins Manufacturing Corporation recommends the use of Sodium Dichlor type
granulated chlorine for sanitizing the water. Sodium Dichlor is preferred because it is totally
soluble, dissolves quickly and is nearly pH neutral.
C. Maintaining the proper level of chlorine during use is extremely important.
D. If the FAC is too low, bacteria and viruses can grow rapidly in the warm water. Increase the
FAC by adding granulated Sodium Dichlor.
E. If the FAC is too high, the water can cause discomfort to the user’s eyes, lungs and skin.
Simply allow some time to pass. The FAC level will drop naturally over time.
F. When the Free Available Chlorine is within the recommended range, the spa is ready to
be enjoyed.
WARNING: There are several forms of stabilized chlorine available for use in spas and
swimming pools and each form has specific chemical characteristics. It is extremely
important that the one you choose is specifically designed for use in spas. Use of an
incorrect product such as tri-chlor, which has a very low pH (2.6), dissolves too quickly in
hot water resulting in extremely high levels of chlorine, and is designed for concrete or
plaster swimming pools, WILL cause damage to your spa. Use of a liquid or concentrated
form of sanitizer WILL damage your spa and is specifically not covered under the terms of the limited warranty.
IMPORTANT: Granulated chlorine (Sodium Dichlor) will degrade if stored improperly. We recommend purchasing
chlorine in one or two pound containers and storing it in a cool, dry place to maintain its potency.

SUPER CHLORINATION
Super Chlorination is designed to “burn-off” the build-up of chloramines (used chlorine), to eliminate the chlorine smell and
to allow the proper level of free chlorine to be maintained.
When giving your water a super chlorination treatment, open the cover at least half way for twenty minutes to allow the
chlorine gas to vent off. The high concentration of chlorine gas which may exist as a result of super chlorination (not daily
sanitation) may eventually cause discoloration or degradation to the bottom of the cover or the tile grouting, which would
not be covered under the terms of your warranty.
IMPORTANT: Always allow the Free Available Chlorine to fall to 5 ppm before using the spa.
WARNING: Never leave an open spa unattended, especially if there are children present!

BUILDING A SANITIZER ROUTINE
During the first month of ownership, measure the sanitizer residual daily in order to establish standards for User Load and
Usage Time versus Sanitizer Needed.
• The User Load of the spa is the number of times anyone enters the spa.
• The Usage Time is simply the amount of time a user spends in the spa.
• Sanitizer Needed is the amount of Free Available Chlorine (FAC) needed to accommodate the number of users and
their combined usage time.
For example, two spa users who regularly use the spa once an evening for twenty minutes create a specific and somewhat
consistent demand on the sanitizer. During the first month of ownership, these two users can determine exactly how much
sanitizer to use in order to maintain the proper residual. If, at any time, the user load and/or usage pattern changes
dramatically (invited guests), the amount and frequency of sanitizer required increases dramatically.
The greater the usage time or the bather load, the faster the residual value is diminished.

Page 27

Water Quality and Maintenance

CHLORINE MAINTENANCE SCHEDULE
Recommended
Chlorine

Sodium dichloro-s-triazinetrione, granular or Sodium dichloro-isocyanurate, granular (common name: Dichlor Chlorine,
granular, 53%-65% available chlorine

Daily Maintenance

Maintain a level of 3-5 ppm free available chlorine residual when spa is in use. Add the recommended amount of dichlor
into the filter compartment while the jet pump is operating. Run the jet pump for 10 minutes.

Weekly
Maintenance

Super chlorinate (shock treatment): Add the recommended amount of dichlor (open cover) into the filter compartment
while the jet pump is operating to raise the free available chlorine residual above 10 ppm. Run the jet pump for 10
minutes. Allow the free chlorine residual to drop to 5 ppm before using the spa!

Important

• A spa being used over an extended period of time, such as a whole afternoon or evening, will need chlorine added at
least every hour or more frequently to maintain the average level of 3-5 ppm free chlorine residual.
• The use of trichloro-s-triazenetrione (tri-chlor) for water sanitation, or swimming pool acid (muriatic acid) to lower the
pH could damage your spa and is not recommended.
• Keeping the spa cover on and secured at all times (except when the spa is in use) will reduce the chemical demand
and help to maintain the spa’s energy efficiency.
• Always add all spa chemicals into the filter compartment while the jet pump is operating.
• Always test the spa water temperature with your hand to make sure it is comfortable before entering.

Warning

Improper water chemistry or the use of non-recommended chemicals may cause severe damage to the spa surface or
equipment which is not covered by the spa warranty!

SUPPLEMENTAL WATER MAINTENANCE
Proper water sanitation and mineral balance (pH control) are absolutely essential for a complete spa water maintenance
program. Here are three other popular water additives that are optional:

Flocculating Agent
The flocculent clarifies the water by removing particles too small for some cartridge filters to catch. The flocculating agent
consists of relatively large particles, which when added to water, attract smaller particles to them like magnets. The small
particles attach to the flocculating agent’s large particles to form a combination which is large enough to be trapped in the
filter. It is important to remember that the use of flocculating agents does not improve water sanitization. With proper
sanitation, the small particles are rendered inert (biologically dead).

Foam Inhibitors
Spa water requires changing due to the buildup of soap in the water. Typically, soap will cause the spa water to foam when
the jets are used. Soap is introduced into the spa water from two sources: users’ bodies, which retain a soap residual after
showering, and swimming apparel, which retains soap after washing.
Foam inhibitors can suppress foam, but cannot remove soap from the water. Soap is very difficult to remove from the
water because soap is not oxidized by any chemical added to the spa. Only ozone can oxidize soap.
Eventually the soap build-up in the water will be concentrated, resulting in an unclean feeling on the bather’s skin which is
impossible to remedy. When this occurs, it’s time to drain and refill the spa. Depending on the soap input, the water should
last about 4 months before needing to be drained.

Mineral Deposit Inhibitors
As water evaporates from your spa and new water is added, the amount of dissolved minerals will increase. (Minimize
evaporation by keeping the cover on the spa whenever possible.) The spa water may eventually become “hard” (Calcium
Hardness too high) enough to damage the heater by calcifying its surface. Proper pH control can minimize this.
Normal soap build-up will require water replacement regularly enough that mineral deposits normally are not a problem.
Occasionally, high iron or copper content in the water may produce green or brown stains on the spa. A mineral deposit
inhibitor may help to reduce these metals.
NOTE: Well water may contain high concentrations of minerals. The use of a low water volume, extra-fine pore water filter
™
(in-line pre-filter such as the FreshStart 10,000 Pre-filter) will help to remove many of the larger particles during the filling of
the spa. In-line pre-filters can be purchased at your local Hot Spot® Spa Dealer.

Water Quality and Maintenance

Page 28

DOS AND DON’TS
• DON’T use swimming pool (muriatic) acid to lower pH.
• DON’T splash pH increaser additives on the siding.
• DON’T use Compressed Sanitizers.
Bromine is an effective sanitizer; however, the methods by which it is administered to the spa water and the quality of the bromine product varies
greatly among manufacturers.
The use of bromine sticks or tablets in floaters, which may become entrapped in a lounge or cooling seat (or sink to the spa floor), have been
shown to cause discoloration of or surface distress to a spa’s shell.
• DON’T use a floater type sanitization system as a low or no maintenance solution to your spa maintenance program.
The spa shell easily can withstand the effects of a properly administered sanitizer. Floating dispensers can become trapped in one area and cause
an over-sanitization (or chemical burn) of that particular area.
If the dispenser setting is too high, the high concentration can discolor the spa shell and damage the underside of the cover.
Automatic floating dispensers have a tendency to either over-brominate or under-brominate as the rate of erosion varies greatly. Damage to the
spa and cover can occur very quickly.
WARNING: Watkins Manufacturing Corporation DOES NOT recommend the use of any floating chemical dispenser. Damage to the spa shell or
components caused by a floating chemical dispenser is specifically not covered under the terms of the limited warranty.
• DON’T use a sanitizer which is not designed for spas.
• DON’T use Household Bleach (liquid sodium hypochlorite).
• DON’T broadcast or sprinkle the chemicals onto the water surface. This method may cause chemically-induced spa surface blistering
(chemical abuse).
• DO add all chemicals slowly into the filter compartment with the jet pump operating on high speed for ten minutes.
• DO use special care if using baking soda to clean either the interior or exterior plastic surfaces.
• DO use only a granular form of sanitizer (chlorine or MPS).

COMMON WATER CHEMISTRY QUESTIONS
Question: Why can’t I use a floater to sanitize my spa water?
Answer: Watkins does not recommend the use of a floater for three reasons.
1. The floater is unable to control the rate at which sanitizer is dissolved into the water. When a floater is first placed in a spa, the sanitizer level
can be extremely high. High sanitizer levels can chemically burn or discolor the spa’s shell or the underside of the cover. Then, after a period
of time, the sanitizer level dispensed by the floater will fall to near zero. A low sanitizer level will allow viruses, bacteria or algae to grow.
2. Floaters tend to stay in one area of the spa most of the time (usually over the cool down seat), causing this area to be exposed to extreme
sanitizer levels.
3. The floater may allow pieces of the highly concentrated sanitizer to fall out and settle on the floor or seat of the spa shell. These pieces of
sanitizer will chemically burn (blister) the spa shell. Although your spa shell is specifically designed to resist the effects of spa chemicals, no
spa surface can withstand this type of highly concentrated chemical. Remember, chemical abuse is specifically not covered under the terms
of the warranty.
Question: When I open my spa, I smell chlorine. How do I get rid of this smell?
Answer: There are two types of chlorine in your spa. The first is the Free Available Chlorine, which is the chlorine available to sanitize your spa.
This available free chlorine does not have an odor. The second is Chloramine, which is residue from chlorine already expended. Chloramines have
a strong chlorine odor. The smell from Chloramines can be eliminated by “shocking” the water. If you smell chlorine in the water, your spa is
reminding you to add a shock treatment.
Question: Why can’t I fill my spa with soft water?
Answer: Soft water is essentially the same as regular water except that most or all of the calcium has been replaced by sodium. Soft water may
be corrosive to the heater and other components. Replacement of spa components damaged by soft water is extremely expensive.
Question: I am trying to reduce the number of chemicals to which my family is exposed. Do I really need to use so many chemicals and in such
large amounts?
Answer: While over-exposure to any chemical can be unhealthful, many low levels of chemicals are effective and beneficial. In the case of spa
water, the chemicals recommended in the Hot Spot® Spa Water Maintenance program are needed to protect the user from water-borne
pathogens (disease-causing microbes) and to prevent corrosion of spa components.
Question: Why isn’t water chemistry damage covered by the warranty?
Answer: The chemical levels and water quality of the water in the spa are under your direct control. With proper basic care, the spa will provide
many years of hot water relaxation. If you are unsure about any chemical or its usage in the spa, contact your Authorized Dealer or Watkins
Manufacturing.

Page 29

Common Water Questions

WATER TERMINOLOGY
The following chemical terms are used in this Water Quality and Maintenance section. Understanding their meaning will
help you to better understand the water maintenance process.
Bromamines: Compounds formed when bromine combines with nitrogen from body oils, urine, perspiration, etc. Unlike
chloramines, bromamines have no pungent odor and are effective sanitizers.
Bromine: A halogen sanitizer (in the same chemical family as chlorine). Bromine is commonly used in stick, tablet, or
granular form. See the DO’s and DON’Ts of Spa Water Maintenance for additional information.
Calcium Hardness: The amount of dissolved calcium in the spa water. This should be approximately 150-200 ppm. High
levels of calcium can cause cloudy water and scaling. Low levels can cause harm to the spa equipment.
Chloramines: Compounds formed when chlorine combines with nitrogen from body oils, urine, perspiration, etc.
Chloramines can cause eye irritation as well as having a strong odor. Unlike bromamines, chloramines are weaker, slower
sanitizers.
Chlorine: An efficient sanitizing chemical for spas. Watkins Manufacturing Corporation recommends the use of Sodium
Dichlor-type granulated chlorine. This type is preferred because it is totally soluble and nearly pH neutral.
Chlorine (or Bromine) Residual: The amount of chlorine or bromine remaining after chlorine or bromine demand has been
satisfied. The residual is, therefore, the amount of sanitizer which is chemically available to kill bacteria, viruses and algae.
Corrosion: The gradual wearing away of metal spa parts, usually caused by chemical action. Generally, corrosion is
caused by low pH or by water with levels of TA, CH, pH or sanitizer which are outside the recommended ranges.
DPD: The preferred reagent used in test kits to measure the Free Available Chlorine.
Halogen: Any one of these five elements: fluorine, chlorine, bromine, iodine and astatine.
MPS: Monopersulfate is the non-chlorine oxidizer used with the FreshWaterAg+® Silver Ion Purification system.
Pathogen: A microorganism such as bacterium that cause disease.
pH: The measure of the spa water’s acidity and alkalinity. The recommended pH for the spa water is 7.4 to 7.6. Below 7.0
(considered neutral), the spa water is too acidic and can damage the heating system. Above 7.8, the water is too alkaline
and can result in cloudy water and scale formation on the shell and heater.
ppm: The abbreviation of “parts per million”, the standard measurement of chemical concentration in water. Identical to
mg/l (milligrams per liter).
Reagent: A chemical material in liquid, powder or tablet form for use in chemical testing.
Scale: Rough calcium-bearing deposits that can coat spa surfaces, heaters, plumbing lines and clog filters. Generally,
scaling is caused by mineral content combined with high pH. Additionally, scale forms more readily at higher water
temperatures.
Shock Treatment: Also known as “super-chlorination” when chorine is used. Shock treatment is a process of adding
significant doses of a quick dissolving sanitizer (MPS or sodium dichlor is recommended) to oxidize non-filterable organic
waste and to remove chloramines and bromamines.
Total Alkalinity: The amount of bicarbonates, carbonates, and hydroxides present in spa water. Proper total alkalinity is
important for pH control. If the TA is too high, the pH is difficult to adjust. If the TA is too low, the pH will be difficult to hold
at the proper level. The desired range of TA in spa water is 125 to 150 ppm.

Water Terminology

Page 30

VI. SERVICE INFORMATION
GENERAL INFORMATION
our Hot Spot® Spa has been designed to provide years of trouble-free use. As with any appliance, problems may
occasionally occur that require the expertise of a qualified service person. Though such simple repairs as resetting a
GFCI switch or breaker, High Limit Thermostat, or Pressure Switch or replacing a light bulb may not require a service call,
they may indicate that a more serious condition exists. These conditions may require an experienced service person.
Before calling for service, please refer to the Troubleshooting Guide.

NOTE: Always retain your original sales receipt for future reference.

GFCI AND HIGH LIMIT THERMOSTAT
If your spa fails to operate at any time, the following items should be checked:
1. Check the power supply to the spa.
2. Check the GFCI (located at the end of the cord in standard models or in the electrical subpanel in 30 amp converted
models) and see if it has tripped. If a GFCI has tripped, reset it. If it will not reset, this may be an indication of a ground
fault (short circuit) within the electrical components. Contact an Authorized Service Technician for a complete
diagnosis.
3. If, upon checking the GFCI you find it has not tripped, check the house breaker panel and ensure the main breaker for
the electrical circuit supplying the spa has not tripped. If it has, this is an indication that either the circuit was
overloaded or a ground fault exists between the breaker panel and the spa receptacle. Contact a qualified electrician.
4. If, upon checking the main house breaker, you find no failures, the heater high-limit thermostat should be checked.
Tripping of the heater high-limit thermostat is normally a result of one or a combination of any of these problems:
1) blockage within the system plumbing, 2) switch malfunction in the heater circuit, or 3) the low speed mode of the jet
pump is not functioning.
5. If the heater high-limit has tripped, the control panel display will read “HL.” Reset the heater high-limit by allowing the
water to cool and disconnecting power to the spa for at least thirty seconds. If the heater high-limit continues to trip,
contact an Authorized Service Technician for a complete diagnosis.
If the spa does not function and the GFCI or GFCI breaker and heater high-limit have not tripped, then the problem should
be referred to a qualified service technician. Refer to the Troubleshooting Guide for additional service information.

MISCELLANEOUS SERVICE INFORMATION
The high-limit thermostat capillary is not an electrical wire. It is a copper tube with a tiny bore which carries an expansive
fluid. NEVER cut, bend or kink the tube.
The jet pump is equipped with a overload cut-off switch, which is designed to protect the pump from overheating. If the
pump shuts itself off in a new spa, it is usually the result of one, or a combination of, the following factors:
High Temperature: During the summer months, especially in warmer climates, the ambient temperature contributes to
excessively high temperatures within the equipment compartment.
Friction: Sometimes the moving parts of a new pump are tight enough to cause heat build-up due to friction. After a
normal break-in period, the pump will run cooler.
Improper House Wiring: If the spa is not connected to a dedicated circuit, or is connected to an extension cord, or the
house wiring is undersized, the pump may starve for voltage and therefore may draw more amperage and generate
excessive heat. This will often cause the circuit breaker to trip repeatedly.

IMPORTANT:
1. If the pump is shutting down due to excessive heat, make sure the equipment compartment has adequate ventilation.
The air gap at the bottom and the jet pump vent at the bottom left corner must not be blocked. Should your jet pump
continue to shut off after short periods of use, contact a qualified service technician.
2. The Hot Spot® Spa is equipped with a safety suction spring valve which will break the prime of the jet pump if both
suction fittings are obstructed.

Page 31

Service Information

ACTS INVALIDATING WARRANTY
The limited warranty is void if the Hot Spot® Spa has been subjected to alteration, misuse or abuse, or if any repairs on the spa are attempted by
anyone other than an authorized representative of Watkins Manufacturing Corporation. Alteration is defined as any component or plumbing
change, electrical conversion, or the addition of any non-approved sanitation or water purification device or heating system which contributes to a
component failure, unit failure or unsafe operating condition. Misuse and abuse shall include any operation of the spa other than in accordance
with Watkins Manufacturing Corporation printed instructions, or use of the spa in an application for which it is not designed; specifically: use of the
spa in a non-residential application; damage caused by operation of the spa at water temperatures outside the range of 32°F and 120 °F; damage
caused by a dirty, clogged or calcified filter cartridge; damage to the spa surface caused by the use of Tri-Chloro chlorine, chemical tablets, acid,
or any other spa sanitizing chemicals or spa surface cleaners which are not recommended by Watkins Manufacturing Corporation; damage
caused by allowing undissolved spa sanitizing chemicals to lie on the spa surface (no spa surface material can withstand this kind of abuse);
damage to components or spa surface caused by improper pH balance or other improper water chemistry maintenance; and damage to the spa
surface caused by leaving the spa uncovered while empty of water and in direct exposure to sunlight (this may cause solar heating distress in
warm weather regions). These are considered abuses and may invalidate this warranty.

DISCLAIMERS
Watkins Manufacturing Corporation shall not be liable for loss of use of the Hot Spot® Spa or other incidental or consequential costs, expenses or
damages, which may include but are not limited to, the removal of a permanent deck or other custom fixture. Any implied warranty shall have a
duration equal to the duration of the applicable warranty stated above. Under no circumstances shall Watkins Manufacturing Corporation or any of
its representatives be held liable for injury to any person or damage to any property, however arising.

WATKINS CUSTOMER SERVICE
If you have any questions about any aspect of your Hot Spot® Spa set-up, operation or maintenance that have not been answered by this manual,
consult your Hot Spot® Spa Dealer.
Watkins Manufacturing Corporation can be reached at: 800-999-4688 (Extension 432), Monday through Friday, 8 am to 5 pm Pacific Standard
Time (PST), or e-mail at custsvc@hotspring.com.

Service Information

Page 32

TROUBLESHOOTING
Watkins Manufacturing Corporation strives to provide the most trouble-free spas on the market. Should you experience any problem whatsoever,
do not hesitate to contact your authorized Hot Spot® Spa Dealer. Here are some tips to help you to diagnose and rectify some more common
sources of trouble yourself, if you choose to do so.

GENERAL OPERATION TROUBLESHOOTING GUIDE
Problem

Probable causes

Solutions

Entire spa is inoperative

• Power failure / not plugged in
• GFCI tripped
• Heater high limit thermostat tripped

• Check power source
• Reset GFCI; call for service if it will not reset.
• Disconnect power for at least thirty seconds to reset heater high limit. If it
will not reset, check for clogged filter. If tripping continues, call for service.

Spa does not heat; jets
and light operate
(Display reads “FLO”)
Display reads “FLC”

• Pressure Switch tripped

• Check for clogged filter. The Pressure Switch will reset when the flow of
water through the heater has been restored. Call for service if the Pressure
Switch trips frequently.

• Pressure Switch senses flow through heater
even though the jet pump is off

• Contact an Authorized Service Technician

Jets weak or surging

• Spa water level too low
• Filters clogged / Jet intake screens clogged
• Jet nozzles closed / Air valve closed

• Add water
• Clean filters / Clean jet intake screens
• Open jet nozzles / Open air valve

Light inoperative

• Bulb burned out

• Replace bulb

Display reads “HL”
(Entire spa inoperative)

• Heater high limit thermostat tripped

• Disconnect power to the spa for at least thirty seconds to reset the heater
high-limit. If tripping continues, clean the filter, then if tripping still occurs,
call for service.

Display reads “Prr”

• Temperature sensor problem

• Disconnect power for at least thirty seconds. If “Prr” is still displayed after
power is restored, call for service.

SPA WATER MAINTENANCE TROUBLESHOOTING GUIDE
Problem

Probable causes

Solutions

Cloudy Water

•
•
•
•
•

•
•
•
•
•
•

Water Odor

• Excessive organics in water
• Improper sanitization
• Low pH

• Shock spa with sanitizer
• Add sanitizer
• Adjust pH to recommended range

Chlorine Odor

• Chloramine level too high
• Low pH

• Shock spa with sanitizer
• Adjust pH to recommended range

Musty Odor

• Bacteria or algae growth

• Shock spa with sanitizer – if problem is visible or persistent, drain, clean
and refill the spa

Organic buildup /
scum ring around spa
Algae Growth

• Buildup of oils and dirt

• Wipe off scum with clean rag – if severe, drain the spa, use a spa surface
and tile cleaner to remove the scum and refill the spa

• High pH
• Low sanitizer level

• Shock spa with sanitizer and adjust pH
• Shock spa with sanitizer and maintain sanitizer level

Eye Irritation

• Low pH
• Low sanitizer level

• Adjust pH
• Shock spa with sanitizer and maintain sanitizer level

Skin Irritation / Rash

• Unsanitary water
• Free chlorine level above 5 ppm

• Shock spa with sanitizer and maintain sanitizer level
• Allow free chlorine level to drop below 5 ppm before spa use

Stains

• Total alkalinity and/or pH too low
• High iron or copper in source water

• Adjust total alkalinity and/or pH
• Use a metal deposit inhibitor

Scale

• High calcium content in water – total
alkalinity and pH too high

• Adjust total alkalinity and pH – if scale requires removal, drain the spa,
scrub off the scale, refill the spa and balance the water

Dirty filters
Excessive oils / organic matter
Improper sanitization
Suspended particles / organic matter
Overused or old water

Clean filters
Shock spa with sanitizer
Add sanitizer
Adjust pH and/or alkalinity to recommended range
Run jet pump(s) and clean filters
Drain and refill the spa

Page 33

Troubleshooting

WATKINS MANUFACTURING CORPORATION
VISTA, CALIFORNIA
USA

This manual contains installation, operating, maintenance and
service information for the following Hot Spot® Spa models:
USA MODELS

HOT SPOT RE, RLX (Model Z)
HOT SPOT SE, SLX (Model Y)

EFFECTIVE DATE
11/99
11/99

CANADIAN MODELS

EFFECTIVE DATE

HOT SPOT RE, RLX (Model ZC)
HOT SPOT SE, SLX (Model YC)

11/99
11/99

©1999 Watkins Manufacturing Corporation. Hot Spot, Comfort Control, Precision, Endurol, No-Fault, Wavemaster, FreshStart,
FreshWaterAg+, The Anywhere Anytime Tub, and The home relaxation specialists are trademarks of Watkins Manufacturing Corporation.
Baqua Spa is a trademark of AVECIA, Inc. Windex® is a trademark of S.C. Johnson & Son, Inc. Soft Scrub® is a trademark of The Clorox
Company.

PART #38406, REV. A (11/99)

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