GOODMAN Air Conditioner/heat Pump(outside Unit) Manual L0806298

User Manual: GOODMAN GOODMAN Air conditioner/heat pump(outside unit) Manual GOODMAN Air conditioner/heat pump(outside unit) Owner's Manual, GOODMAN Air conditioner/heat pump(outside unit) installation guides

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CONDENSING UNiT Goodman ManufacturingCompany, L.P.©2005-2007
5151 San Felipe, Suite 500, Houston, TX 77056
HEAT PUMP www.goodmanmfg.com -or- www.amana-hac.com
INSTALLATION & SERVICE REFERENCE P/N: IO-259F Date: July 2007
Important Safety Instructions
The following symbols and labels are used throughout this
manual to indicate immediate or potential safety hazards. It is
the owner's and installer's responsibility to read and comply
with all safety information and instructions accompanying these
symbols. Failure to heed safety information increases the risk
of personal injury, property damage, and/or product damage.
, WARNING
HIGH VOLTAGE, _tDisconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage,
_ersonal injury or death.
WARNING
Installation and repair of this unit should be performed
ON LY by individuals meeting the requirements of an
"entry level technician" as specified by the Air
Conditioning and Refrigeration Institute (ARI). Attempt-
ing to install or repair this unit without such background
may result in product damage, personal injury or
death.
CAUTION
the imposition of substantial fines. Should you have any
questions please contact the local office of the EPA.
If replacing a condensing unit or air handler, the system must
be manufacturer approved and Air Conditioning and Refrigera-
tion Institute (ARI) matched. NOTE: Installation of unmatched
systems is strongly discouraged.
Operating the unit in a structure that is not complete (either as
part of new construction or renovation) will void the warranty.
Installation Clearances
Special consideration must be given to location of the con-
densing unit(s) in regard to structures, obstructions, other units,
and any/all other factors that may interfere with air circulation.
Where possible, the top of the unit should be completely unob-
structed; however, if vertical conditions require placement be-
neath an obstruction there should be aminimum of 60
inches between the top of the unit and the obstruction(s).
The specified dimensions meet requirements for air circulation
only. Consult all appropriate regulatory codes prior to deter-
mining final clearances.
Another important consideration in selecting a location for the
unit(s) is the angle to obstructions. Either side adjacent the
valves can be placed toward the structure provided the side
away from the structure maintains minimum service clearance.
Corner installations are strongly discouraged.
Scroll equipped units should never be used to evacuate
the air conditioning system. Vacuums this low can cause
internal electrical arcing resulting in a damaged or failed
compressor.
Shipping Inspection
Always keep the unit upright; laying the unit on its side or top
may cause equipment damage. Shipping damage, and subse-
quent investigation is the responsibility of the carrier. Verify
the model number, specifications, electrical characteristics,
and accessories are correct prior to installation. The distribu-
tor or manufacturer will not accept claims from dealers for trans-
portation damage or installation of incorrectly shipped units.
Codes & Regulations
This product is designed and manufactured to comply with
national codes. Installation in accordance with such codes and/
or prevailing local codes/regulations is the responsibility of the
installer. The manufacturer assumes no responsibility for equip-
ment installed in violation of any codes or regulations.
The United States Environmental Protection Agency (EPA)
has issued various regulations regarding the introduc-
tion and disposal of refrigerants. Failure to follow these
regulations may harm the environment and can lead to
NOT
RECOMMENDED
B
OK!J
Minimum Airflow Clearance
Model Type A B CAA
Residential 10" 10" 18" 20"
Light Commercial 12" 12" 18" 24"
This unit can be located at ground floor level or on fiat roofs. At
ground floor level, the unit must be on a solid, level foundation
that will not shift or settle. To reduce the possibility of sound
transmission, the foundation slab should not be in contact with
or be an integral part of the building foundation. Ensure the
foundation is sufficient to support the unit. A concrete slab
raised above ground level provides a suitable base.
Rooftop Installations
If it is necessary to install this unit on a roof structure, ensure
the roof structure can support the weight and that proper con-
sideration is given to the weather-tight integrity of the roof. Since
the unit can vibrate during operation, sound vibration transmis-
sion should be considered when installing the unit. Vibration
absorbing pads or springs can be installed between the con-
densing unit legs or frame and the roof mounting assembly to
reduce noise vibration.
NOTE: These units require special location consideration in
areas of heavy snow accumulation and/or areas with prolonged
continuous subfreezing temperatures. Heat pump unit bases
have cutouts under the outdoor coil that permit drainage of
frost accumulation. Situate the unit to permit free unobstructed
drainage of the defrost water and ice. A minimum 3" clearance
under the outdoor coil is required in the milder climates.
In more severe weather locations, it is recommended that the
unit be elevated to allow unobstructed drainage and air flow.
The following elevation minimums are recommended:
Design Temperature Suggested Minimum Elevation
+15 ° and above 2 1/2"
-5 ° to +14 ° 8"
below -5 ° 12"
Safe Refrigerant Handling
While these items will not cover every conceivable situation,
they should serve as a useful guide.
WARNING I
possible injury, explosion or death, practice ITo avoid
safe hand ng of refr gerants. I
d kWARNING
Refrigerants are heavier than air. They can "push out"
the oxygen in your lungs or in any enclosed space.To
avoid possible difficulty in breathing or death:
iever purge refrigerant into an enclosed room or
space. By law, all refrigerants must be reclaimed.
If an indoor leak is suspected, throughly ventilate the
area before beginning work.
•Liquid refrigerant can be very cold. To avoid possible
frostbite or blindness, avoid contact and wear gloves
and goggles. If liquid refrigerant does contact your
skin or eyes, seek medical help immediately.
Always follow EPA regulations. Never burn refrig-
erant, as poisonous gas will be produced.
kWARNING
To avoid possible explosion:
Never apply flame or steam to a refrigerant cylinder.
If you must heat a cylinder for faster charging,
partially immerse it in warm water.
Never fill a cylinder more than 80% full of liquid re-
frigerant.
Never add anything other than R-22 to an R-22 cy-
linder or R-410A to an R-410A cylinder. The service
equipment used must be listed or certified for the
type of refrigerant used.
Store cylinders in a cool, dry place. Never use a cy-
linder as a platform or a roller.
WARNING
To avoid possible explosion, use only returnable (not
disposable) service cylinders when removing refrig-
erant from a system.
•Ensure the cylinder is free of damage which could
lead to a leak or explosion.
•Ensure the hydrostatic test date does not exceed
5 yea rs.
•Ensure the pressure rating meets or exceeds 400
Ibs.
When in doubt, do not use cylinder.
Refrigerant Lines
CAUTION
The compressor POE oil for R-410A units is extremely
susceptible to moisture absorption and could cause
compressor failure. Do not leave system open to atmos-
phere any onger than necessary for nsta at on.
Use only refrigerant grade (dehydrated and sealed) copper tub-
ing to connect the condensing unit with the indoor evaporator.
After cutting the tubing, install plugs to keep refrigerant tubing
clean and dry prior to and during installation. Tubing should
always be cut square keeping ends round and free from burrs.
Clean the tubing to prevent contamination.
Do NOT let refrigerant lines come in direct contact with plumb-
ing, ductwork, floor joists, wall studs, floors, and walls. When
running refrigerant lines through a foundation orwall, openings
should allow for sound and vibration absorbing material to be
placed or installed between tubing and foundation. Any gap
between foundation or wall and refrigerant lines should be filled
with a pliable silicon-based caulk, RTV or a vibration damping
material. Avoid suspending refrigerant tubing from joists and
studs with rigid wire or straps that would come in contact with
the tubing. Use an insulated or suspension type hanger. Keep
both lines separate and always insulate the suction line.
These sizes are suitable for line lengths of 74 feet or less. If a
run of more than fifty feet is required, refer to Remote Cooling
Service Manual, or TP-106 Long Line Set Application R-22, or
TP- 107 Long Line Set Application R-410A or contact your dis-
tributor for assistance.
RECOMMENDED INTERCONNECTING TUBING (Ft)
Cond 0-24 25-49 50-74"
Unit Line Diameter (In. OD)
Tons Suct Liq Suct Liq Suct Liq
1 1/2 5/8 1/4 3/4 3/8 3/4 3/8
2 5!8 1/4 3/4 3!8 3/4 3!8
2 1!2 3/4 3!8 3/4 3!8 7!8 3!8
3 3/4 3!8 7!8 3!8 1 1!8 3!8
3 1!2 3/4 3!8 1 1!8 3!8 1 1!8 3!8
4 7!8 3!8 1 1!8 3!8 1 1!8 3!8
5 7!8 3!8 1 1!8 3!8 1 1!8 3!8
* Lines greater than 74 feet in length or vertical elevation
changes more than 50 feet refer to the Remote Cooling
Service Manual or contact your distributor for assistance,
where tubing enters/exits the enclosure.
3. If the lines must pass under or through a concrete slab,
ensure lines are adequately protected and sealed.
Refrigerant Line Connections
iMPORTANT: To avoid overheating the service valve, TXV
valve, or filter drier while brazing, wrap the component
with a wet rag, or use a thermal heat trap compound as
recommended by the compound manufacturer. Use a
brazing alloy of 2% minimum silver content. Do not use
flux.
,The ends of the refrigerant lines must be cut square, de-
burred, cleaned, and be round and free from nicks or dents.
Any other condition increases the chance of a refrigerant
leak.
-- Liquid Line
Suction Line
Mounting the evaporator coil above the
condensing unit will require an inverted
loop in the suction line adjacent or near
the connection to the evaporator. The top
of the loop must be slightly higher than the
top of the coil.
Mounting the condensing unit above
the evaporator coil will require oil traps
at equal intervals along the suction line.
Install 1 oil trap for a height difference of
15-25 feet between indoor and outdoor
units. Install 2 oil traps for a difference of
_ 6-50 feet, 3 for 51-100 feet, and 4 for
101-150 feet.
Insulation is necessary to prevent condensation from forming
and dropping from the suction line. Armflex (or satisfactory
equivalent) with 3/8" min. wall thickness is recommended. In
severe conditions (hot, high humidity areas) 1/2" insulation may
be required. Insulation must be installed in a manner which
protects tubing from damage and contamination.
Where possible, drain as much residual compressor oil from
existing systems, lines, and traps; pay close attention to low
areas where oil may collect. NOTE: If changing refrigerant
types, ensure the indoor coil and metering device is compat-
ible with the type of refrigerant being used; otherwise, the in-
door coil must be replaced.
Burying Refrigerant Lines
If burying refrigerant lines can not be avoided, use the following
checklist.
1. Insulate liquid and suction lines separately.
2. Enclose all underground portions of the refrigerant lines
in waterproof material (conduit or pipe) sealing the ends
,
,
4.
"Sweep" the refrigerant line with nitrogen or inert gas dur-
ing brazing to prevent the formation of copper-oxide in-
side the refrigerant lines. The POE oils used in R-410A
applications will clean any copper-oxide present from the
inside of the refrigerant lines and spread it throughout the
system. This may cause a blockage or failure of the me-
tering device.
After brazing, quench the joints with water or a wet cloth
to prevent overheating of the service valve.
Ensure the filter drier paint finish is intact after brazing. If
the paint of the steel filter drier has been burned or chipped,
repaint or treat with a rust preventative. This is especially
important on suction line filter driers which are continu-
ally wet when the unit is operating.
NOTE: Be careful not to kink or dent refrigerant lines. Kinked
or dented lines will cause poor performance or compressor
damage.
Do NOT make final refrigerant line connection until plugs are
removed from refrigerant tubing.
NOTE: Before brazing, verify indoor piston size by checking
the piston kit chart packaged with indoor unit.
Leak Testing (Nitrogen or Nitrogen-Traced)
kWARNING
To avoid the risk of fire or explosion, never use
oxygen, high pressure air or flammable gases for leak
testing of a refrigeration system.
WARNING
To avoid possible explosion, the line from the
nitrogen cylinder must include a pressure regulator
and a pressure relief valve. The pressure relief valve
must be set to open at no more than 150 ps g.
Pressure test the system using dry nitrogen and soapy water
to locate leaks. If you wish to use a leak detector, charge the
system to 10 psi using the appropriate refrigerant then use
nitrogen to finish charging the system to working pressure then
apply the detector to suspect areas. If leaks are found, repair
them.Afterrepair,repeatthepressuretest.Ifnoleaksexist,
proceedtosystemevacuation.
System Evacuation
Condensing unit liquid and suction valves are closed to contain
the charge within the unit. The unit is shipped with the valve
stems closed and caps installed. Do not open valves until
the system is evacuated.
WARNING
REFRIGERANT UNDER PRESSURE!
Failure to follow proper procedures may cause
property damage, persona njury or death.
1. Connect the vacuum pump with 250 micron capability to
the service valves.
2. Evacuate the system to 250 microns or less using suc-
tion and liquid service valves. Using both valves is nec-
essary as some compressors create a mechanical seal
separating the sides of the system.
3. Close pump valve and hold vacuum for 10 minutes. Typi-
cally pressure will rise during this period.
5O00
4500
4000
o 3500
3000
i 2500
2000
1500 CONDENSlBLES OR SMALL
LEAK PRESENT
1000
500 NO LEAKS
0 1 2 3 4 5 6 7 8 9 10
MINUTES
If the pressure rises to 1000 microns or less and remains
steady the system is considered leak-free; proceed to
startup.
• If pressure rises above 1000 microns but holds steady
below 2000 microns, moisture and/or noncondensibles
may be present or the system may have a small leak.
Return to step 2: If the same result is encountered check
for leaks as previously indicated and repair as necessary
then repeat evacuation.
• If pressure rises above 2000 microns, a leak is present.
Check for leaks as previously indicated and repair as nec-
essary then repeat evacuation.
Electrical Connections
WARNING
HIGH VOLTAGE!
Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage,
personal injury or death due to electric shock.
Wiring must conform with NEC or CEC and all
local codes. Undersized wires could cause
poor equipment performance, equipment damage
or fire.
kWARNING I
To avoid the risk of fire or equipment damage, use I
copper conductors, I
NOTICE
Units with reciprocating compressors and non-bleed TXV's
requ re a Hard Start K t.
The condensing unit rating plate lists pertinent electrical data
necessary for proper electrical service and overcurrent protec-
tion. Wires should be sized to limit voltage drop to 2% (max.)
from the main breaker or fuse panel to the condensing unit.
Consult the NEC, CEC, and all local codes to determine the
correct wire gauge and length.
Local codes often require a disconnect switch located near the
unit; do not install the switch on the unit. Refer to the installa-
tion instructions supplied with the indoor furnace/air handler for
specific wiring connections and indoor unit configuration. Like-
wise, consult the instructions packaged with the thermostat
for mounting and location information.
Overcurrent Protection
The following overcurrent protection devices are approved for
use.
• Time delay fuses
• HACR type circuit breakers
These devices have sufficient time delay to permit the motor-
compressor to start and accelerate its load,
Three Phase Compressor Rotation
CAUTION
Use care when handling scroll compressors. Dome temp-
eratures could be hot.
Three phase compressors are power phase dependent and
can rotate in either direction.
Verify proper rotation for three phase compressors by ensuring
the suction pressure drops and discharge pressure rises when
the compressor is energized. NOTE: When operated in re-
verse, a three phase scroll compressors is noisier and its cur-
rent draw substantially reduced compared to marked values.
Tocorrect,disconnectpowerandswitchanytwoleadsatthe
unitcontactorandre-observe.
High Voltage Connections
Route power supply and ground wires through the high voltage
port and terminate in accordance with the wiring diagram pro-
vided inside the control panel cover.
Low Voltage Connections
Condensing unit control wiring requires 24 Volt minimum, 25VA
service from the indoor transformer. Low voltage wiring for two-
stage units depends on the thermostat used and the number
of control wires between the indoor unit and the condensing
unit. Route control wires through the low voltage port and ter-
minate in accordance with the wiring diagram provided inside
the control panel cover.
SYSTEM COMPOSITE DIAGRAM
EIFAT pE%,Ip S
10 KW & BELOW
(OpTrO','_
OUT_0ORTH_I0STAT
CL0S_ O'_T_IPEIL_I_ _ _ _L
SYSTEM ( OMPOSITE DIAGRAM
HFAT pL%,IpS
ABOVE 10 KW
I
oT2
(oP_o'; '.L>
O_T_0OI_TICF2C40STAT
XO_S
}0_72300R 2_EI_MOST&TOr 1)SI{O,_D BETI_
EERSTTOCLOSE_2_13_ [&ST TOOPEN
_'_ _ r. TOC_:_Z r_ OT 21S:COT,SED
4T_RX4z_\_DLF?',
SL.Sn_
Thermostat
with Low Voltage Wires to Heat Pump Unit
NOTE: For two-stage units, refer to the Installation Instructions
supplied with the variable speed indoor units for field wiring
connections,
System Start Up
Adequate refrigerant charge for a matching evaporator and 15
feet lineset is supplied with the condensing unit. NOTE: If lineset
exceeds 15 feet in length, refrigerant should be added at .6
ounces per foot of liquid line.
Open each valve only until the top of the stem is 1/8" from the
retainer. To avoid loss of refrigerant, do not apply pressure to
the retainer.
1. Break vacuum by fully opening liquid and suction base
valves.
2. Set thermostat to call for cooling. Check indoor and out-
door fan operation and allow system to stabilize for 10
minutes for fixed orifices and 20 minutes for expansion
valves.
Charge Verification
WARNING
REFRIGERANT UNDER PRESSURE!
•Do not overcharge system with refrigerant.
•Do not operate unit in a vacuum or at negative pres-
sure.
Failure to follow proper procedures may cause
property damage, personal injury or death.
CAUTION
Use refrigerant certified to ARI standards. Used refrigerant
may cause compressor damage, and will void the warranty.
Most portable machines cannot clean used refrigerant to
meet ARt standards.
NOTICE
Violation of EPA regulations may result in fines or other
pena t es.
CAUTION
Operating the compressor with the suction valve closed will
vo d the warranty and cause serious compressor damage.
Final Charge Adjustment
The outdoor temperature must be 60°F or higher. Set the room
thermostat to COOL, fan switch to AUTO, and set the tem-
perature control well below room temperature.
After system has stabilized per startup instructions, check
subcooling and superheat as detailed in the following section.
Fixed Orifice
CAUTION
To prevent personal injury, carefully connectand disconnect
manifold gauge hoses. Escaping liquid refrigerant can cause
burns. Do not vent refrigerant into the atmosphere. Recover
all refrigerant during system repair and before final unit
d sposa.
1. Purge gauge lines. Connect service gauge manifold to
base-valve service ports. Run system at least 10 minutes
to allow pressure to stabilize.
2. For best results, temporarily install a thermometer on the
suction line near the compressor. The thermometer
should be located within 4" to 6" of the compressor. En-
sure the thermometer makes adequate contact and is
insulated.
NOTE:Anoptional,lessaccurate,methodis tolocate
thethermometeratthesuctionlineservicevalve.Ensure
thethermometermakesadequatecontactandisinsu-
lated.
3. Refertothesuperheattableprovidedforpropersystem
superheat.Addchargeto lowersuperheator recover
chargetoraisesuperheat.
SYSTEM SUPERHEAT
Ambient Condenser
Inlet Temp.
(°F Drybulb)
Return Air Temperature
(°F Drybulb)
85I70 I78 I80I85
115 3
100 5 5
95 5 5 5
90 7 12 18
85 5 !0 !7 20
80 5 !2 21 26
78 5 10 17 25 29
70 5 14 20 28 32
65 13 19 26 32 35
60 17 25 30 33 37
4. Disconnect manifold set, installation is complete.
Superheat Formula = Suct. Line Temp. - Sat. Suct.
Temp.
SATURATED SUCTION PRESSURE
TEMPERATURE CHART
SATURATED SUCTION
SUCTION PRESSURE TEMPERATURE°F
PSIG R-22 R-410A
50 26 1
52 28 3
54 29 4
56 31 6
58 32 7
60 34 8
62 35 10
64 37 11
66 38 13
68 40 14
70 41 15
72 42 16
74 44 17
76 45 19
78 46 20
80 48 21
Expansion Valve System
Single Speed Application
1. Purge gauge lines. Connect service gauge manifold to
base-valve service ports. Run system at least 10 min-
utes to allow pressure to stabilize.
2. Temporarily install thermometer on liquid (small)line near
liquid line service valve with adequate contact and insu-
late for best possible reading.
3. Check subcooling and superheat. Systems with TXV ap-
plication should have a subcooling of 7 _+2 °F and super-
heat of 7 to 9 °F.
a. If subcooling and superheat are low, adjust TXV to
7 to 9 °F superheat, then check subcooling.
NOTE: To adjust superheat, turn the valve stem
clockwise to increase and counter clockwise to de-
crease.
b. If subcooling is low and superheat is high, add charge
to raise subcooling to 7 _+2°F then check super-
heat.
c. If subcooling and superheat are high, adjust TXV
valve to 7 to 9 °F superheat, then check subcooling.
d. If subcooling is high and superheat is low, adjust
TXV valve to 7 to 9 °F superheat and remove charge
to lower the subcooling to 7 _+2°F.
NOTE: Do NOTadjust the charge based on suction pres-
sure unless there is a gross undercharge.
4. Disconnect manifold set, installation is complete.
Subcooling Formula =Sat. Liquid Temp. - Liquid Line
Temp.
SATURATED LIQUID PRESSURE
TEMPERATURE CHART
SATURATED LIQUID
LIQUID PRESSURE TEMPERATURE°F
PSlG R-22 R-410A
200 101 70
210 105 73
220 108 76
225 110 78
235 113 80
245 116 83
255 119 85
265 12! 88
275 124 90
285 127 92
295 130 95
305 133 97
325 137 10!
355 144 108
375 148 112
405 155 118
Two Speed Application
Run the remote on low stage cooling for 10 minutes until refrig-
erant pressures stabilize. Follow the guidelines and methods
below to check unit operation and ensure that the refrigerant
charge is within limits. Charge the unit on low stage.
1. Purge gauge lines. Connect service gauge manifold to
base-valve service ports. Run system at least 10 minutes
to allow pressure to stabilize.
2. Temporarily install thermometeron liquid (small)line near
liquidlineservicevalvewithadequatecontactandinsu-
lateforbestpossiblereading.
3.Checksubcoolingandsuperheat.SystemswithTXVap-
plicationshouldhaveasubcoolingof5to7°Fandsuper-
heatof 7to 9°F.
a. Ifsubcoolingandsuperheatarelow,adjustTXVto
7to9°Fsuperheat,thenchecksubcooling.
NOTE:Toadjustsuperheat,turnthevalvestem
clockwisetoincreaseandcounterclockwisetode-
crease.
b. Ifsubcoolingislowandsuperheatishigh,addcharge
to raisesubcoolingto 5to 7°Fthenchecksuper-
heat.
c. Ifsubcoolingandsuperheatarehigh,adjustTXV
valveto7to9°Fsuperheat,thenchecksubcooling.
d. Ifsubcoolingis highandsuperheatislow,adjust
TXVvalveto7to9°Fsuperheatandremovecharge
tolowerthesubcoolingto5to7°F.
NOTE:DoNOTadjustthechargebasedonsuctionpres-
sureunlessthereisagrossundercharge.
4. Disconnectmanifoldset,installationiscomplete.
SubcoolingFormula=Sat.LiquidTemp.- LiquidLineTemp.
Heat Pump - Heating Cycle
The proper method of charging a heat pump in the heat mode
is by weight with the additional charge adustments for line
size, line length, and other system components.
NOTICE
IUnits with reciprocating compressors and non-bleed TXV's I
require a Hard Start Kit. 7
Troubleshooting Information
Complaint No Cooling
System
Unsatisfactory Cooling/Heating Operating
Pressures
POSSIBLE CAUSE
O
DOTS IN ANALYSIS
GUIDE INDICATE
"POSSIBLE CAUSE"
Dower Failure
Blown Fuse
Jnbalanced Power, 3PH
_oose Connection
Bhorted or Broken Wires
Dpen Fan Overload
--aulty Thermostat
--aulty Transformer
Bhorted or Open Capacitor
ntemal Compressor Overload Open
Bhorted or Grounded Compressor
_ompressor Stuck
:aulty Compressor Contactor
:aulty Fan Relay
Dpen Control Circuit
_ow Voltage
:aulty Evap. Fan Motor
Bhorted or Grounded Fan Motor
mproper Cooling Anticipator
Bhortage of Refrigerant
Restricted Liquid Line
Dpen Element or Limit on Elec. Heater
Dirty Air Filter
Dirty indoor Coil
qot enough air across Indoor Coil
Too much air across Indoor Coil
Dvercharge of Refrigerant
Dirty Outdoor Coil
qoncondensibles
Recirculation of Condensing Air
nflttration of Outdoor Air
mproperly Located Thermostat
_,irFlow Unbalanced
Bystem Undersized
Broken tntemal Parts
Broken Valves
nefficient Compressor
Nrong Type Expansion Valve
Expansion Device Restricted
Oversized Expansion Valve
Undersized Expansion Valve
Expansion Valve Bulb Loose
noperative Expansion Valve
_oose Hold-down Bolts
--aulty Reversing Valve
--aulty Defrost Control
--aulty Defrost Thermostat
--Iowrator Not Seating Properly
o_
_ E
o o
o g
_ _ _ _ o_ _ _ o _ _o
_ _ "- , _ _ _ _ o
_'_'_ _ R _ =_ _ o°
c_ o o _
o
_ _ _ oo
• Cooling or Heating Cycle (Heat Pump)
o
e
8(/3
_o
_o
Test Method
Remedy
Test Voltage
tnspect Fuse Size & Type
Test Voltage
inspect Connection - Tighten
Test Circuits With Ohmmeter
Test Continuity of Overload
Test Continuity of Thermostat & Wiring
Check Control Circuit with Voltmeter
Test Capacitor
Test Continuity of Overload
Test Motor Windings
Use Test Cord
Test Continuity of Coil & Contacts
Test Continuity of Coil And Contacts
Test Control Circuit with Voltmeter
Test Voltage
• Repair or Replace
• Test Motor Windings
Check Resistance of Anticipator
Test For Leaks, Add Refrigerant
• Remove Restriction, Replace Restricted Part
Test Heater Element and Controls
• inspect Filter-Clean or Replace
• inspect Coil - Clean
• Check Blower Speed, Duct Static Press, Filter
Reduce Blower Speed
• • Recover Part of Charge
• inspect Coil - Clean
• Recover Charge, Evacuate, Recharge
• Remove Obstruction to Air Flow
Check Windows, Doors, Vent Fans, Etc.
Relocate Thermostat
Readjust Air Volume Dampers
Refigure Cooling Load
Replace Compressor
Test Compressor Efficiency
Test Compressor Efficiency
• Replace Valve
• Remove Restriction or Replace Expansion Device
• Replace Valve
• Replace Valve
• Tighten Bulb Bracket
• Check Valve Operation
Tighten Bolts
• • • • • • Replace Valve or Solenoid
• • • • • • Test Control
• • • • • • • Test Defrost Thermostat
• • Check FIowrator & Seat or Replace FIowrator
• Heating Cycle Only (Heat Pump)
For detailed service information refer to the Remote Condensing Unit Service manual.

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