Sanyo Stb0810C1 Users Manual

STB1020C1 to the manual 7d29215c-90e3-449e-9284-519af047db1a

2015-01-26

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TECHNICAL & SERVICE MANUAL
STB0810C1
STB1010C1
STB1020C1
STB1220C1

STB0811C1
STB1023C1
STB1123C1
STB0823H1

FILE NO.
Destination: U.S.A.

SANYO 26˝ THROUGH THE WALL
AIR CONDITIONERS & HEAT PUMP
COOLING ONLY MODEL

COOLING & ELECTRIC HEATING MODEL

Model No.

Product Code No.

Model No.

Product Code No.

STB0810C1–S

1 851 005 66

STB0811C1–S

1 851 005 69

STB1010C1–S

1 851 005 65

STB1023C1–S

1 851 005 51

STB1020C1–S

1 851 005 68

STB1123C1–S

1 851 005 70

STB1220C1–S

1 851 005 67

STB0810C1
STB1010C1
STB1020C1
STB1220C1

HEAT PUMP MODEL
Model No.

Product Code No.

STB0823H1–S

1 851 005 52

STB0811C1
STB1023C1
STB1123C1
STB0823H1

REFERENCE NO. SM700487

IMPORTANT!
Please Read Before Starting

When Installing
Place of Installation
• If possible, install the unit in a shady location.

This air conditioner meets strict safety and operating
standards. As the installer or service person, it is an
important part of your job to install or service the system so it
operates safely and efficiently.

• Install it at a spot where optimum air circulation can be
obtained. No chairs or other obstructions are allowed in
front of the air conditioner.
• Keep enough space from any outside obstruction (wall,
bush, etc.).

For safe installation and trouble-free operation, you
must:

Dimension of
Wall Opening

• Carefully read the INSTRUCTION MANUAL and
INSTALLATION INSTRUCTIONS attached to each air
conditioner before beginning.

Wall opening of
26-1/8" x 15-3/4"
is required

• Follow each installation or repair step exactly as shown.
• Observe all local, state, and national electrical codes.
• Pay close attention to all warning and caution notices given
in this manual.

|

Ã
ƒ
C
|
Ã
ƒ
C


15 3 / 4

Minimum Wall Sleeve Opening

This symbol refers to a hazard or unsafe practice which can
result in severe personal injury or death.

Be sure to use lintel
to support the block
and brick above the
sleeve to retain the
weight of the unit

This symbol refers to a hazard or unsafe practice which can
result in personal injury or product or property damage.
If Necessary, Get Help
These instructions are all you need for most installation sites
and maintenance conditions. If you require help for a special
problem, contact our sales/service outlet or your certified
dealer for additional instructions.

Trim
molding
(if desired)

Caulk
(4sides)

Room side

SPECIAL PRECAUTIONS
WARNING

26 1 / 8

Minimum
5" from
the floor

When Wiring

15 7 / 8 "

16 7 / 8 "

Outside

Box and receptacle

ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL
INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED
ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS
SYSTEM.

• As a safety measure, it is recommended that two people
install the unit.
• Hold the unit securely, and be careful not to drop any parts
if the air conditioner is being installed on an upper floor of a
multistory building.

• All wiring must conform to local electrical codes.
• Each unit must be properly grounded with a ground (or
earth) wire or through the supply wiring.

When Servicing

• DO NOT, under any circumstances, cut or remove the third
(ground) prong from the power cord plug.

• Turn the power OFF at the main power box (mains) before
opening the unit to check or repair electrical parts and
wiring.

• DO NOT use an adapter Plug or extension cord.
• DO NOT use a damaged power cord, plug, or wall outlet.
Replace them immediately.

• Keep fingers and clothing away from any moving parts.

• DO NOT change the internal wiring or any part of the
system.

• Clean up the site after you finish, remembering to check
that no metal scraps or bits of tools have been left inside
the unit being serviced.

• DO NOT turn the air conditioner on and off by plugging and
unplugging. Use the Operation switch.

Others
CAUTION

When Transporting
Be careful when picking up and moving the air conditioner.
Get a partner to help, and bend your knees when lifting to
reduce strain on your back. Sharp edges or thin aluminum
fins on the air conditioner can cut your fingers.

• Ventilate any enclosed areas when installing or testing the
refrigeration system. Escaped refrigerant gas, on contact
with fire or heat, can produce dangerously toxic gas.
• Confirm upon completing installation that no refrigerant gas
is leaking. If escaped gas comes in contact with a stove,
gas water heater, electric room heater or other heat source,
it can produce dangerously toxic gas.

i

HOW TO USE THIS MANUAL
This manual is designed to help service personnel to understand basic functions, operation and possible troubles
and their remedies on SANYO 26˝ Through The Wall Air Conditioner. You can use this manual both as a reference
to find specific information about the capacity, construction of the unit, and as a source of information to help you
set up and maintain the air conditioner. Please use this manual to make your work easier, keep the air conditioner
functioning well, and keep your customer satisfied.
Please read IMPORTANT ! precautional information on the previous page before you start actual work.

SANYO 26˝ THROUGH THE WALL A/C MODEL IDENTIFICATION
SANYO 26˝ Through The Wall Air Conditioner is identified by a model number. Cooling or heating capacity,
electrical information and special features included on the air conditioner are indicated on the model number.

Example

STB 1 0 2 3 C 1
Development Flag
Type

Type
C : Cooling

STB : SANYO 26˝ Thru the wall
Capacity

H : Heat Pump

Electric Heater Size
0 : No Electric Heater
1 : 1.2 kW
3 : 3.4 kW

08 : 8,000 BTU/h class
10 : 10,000 BTU/h class
11 : 11,000 BTU/h class

Power Supply
1 : 60Hz 115 V
2 : 60Hz 230 / 208 V

12 : 12,000 BTU/h class

NOTE
To identify the correct model number of your air conditioner, you must find the nameplate.
The name plate is usually located in front of electric component box (behind the grille).
First, remove the grille to access the electric component box.

ii

Table of Contents
Page
1. OPERATING RANGE ............................................................................................................................... 1
2. SPECIFICATIONS
2-1. Unit Specifications .......................................................................................................................... 2
2-2. Major Component Specifications ................................................................................................... 4
2-3. Other Component Specifications.................................................................................................... 6
3. DIMENSIONAL DATA............................................................................................................................... 7
4. REFRIGERANT FLOW DIAGRAM .......................................................................................................... 8
5. PERFORMANCE DATA
5-1. Cooling Capacity ........................................................................................................................... 9
5-2. Heating Capacity ........................................................................................................................... 17
6. ELECTRICAL DATA
6-1. Electrical Characteristics ............................................................................................................... 18
6-2. Electrical Wiring Diagrams ............................................................................................................ 21
6-3. P.C.B. Ass'y (Printed Pattern) ........................................................................................................ 27
7. TROUBLESHOOTING
7-1. Check before and after troubleshooting ........................................................................................ 28
7-2. Air conditioner does not operate .................................................................................................... 29
7-3. Some part of air conditioner does not operate .............................................................................. 31
7-4. Air conditioner operates, but abnormalities are observed ............................................................. 33
7-5. If a sensor is defective ................................................................................................................... 34
8. CHECKING ELECTRICAL COMPONENTS
8-1. Measurement of Insulation Resistance .......................................................................................... 35
8-2. Checking Motor Capacitor .............................................................................................................. 36
8-3. Checking Fan Motor Winding ......................................................................................................... 36
8-4. Checking Compressor Motor Winding............................................................................................ 36
8-5. Checking Thermistor ...................................................................................................................... 36
9. DISASSEMBLY PROCEDURE
9-1. Removing Front Grille..................................................................................................................... 37
9-2. Removing Wall Sleeve ................................................................................................................... 37
9-3. Removing Electrical Component Box ............................................................................................. 37
9-4. Removing Electric Heater............................................................................................................... 38
9-5. Removing Blower Wheel ................................................................................................................ 39
9-6. Removing Evaporator..................................................................................................................... 39
9-7. Removing Condenser..................................................................................................................... 40
9-8. Removing Propeller Fan................................................................................................................. 40
9-9. Removing Fan Motor ...................................................................................................................... 41
10.FUNCTION
10-1. Room temperature Control ............................................................................................................ 42
10-2. Defrosting Operation (Heating)....................................................................................................... 45
APPENDIX .................................................................................................................................................. 46
iii

1. OPERATING RANGE
■ COOLING ONLY MODEL
Models
STB0810C1 STB1010C1
Temperature
Cooling

STB1020C1

STB1220C1

Indoor Air Intake Temp.

Outdoor Air Intake Temp.

Maximum

95°F D.B. / 71°F W.B.

115°F D.B.

Minimum

67°F D.B. / 57°F W.B.

67°F D.B.

■ COOLING & ELECTRIC HEATING MODEL
Models
STB0811C1 STB1023C1
STB1123C1

Cooling

Heating

Temperature

Indoor Air Intake Temp.

Outdoor Air Intake Temp.

Maximum

95°F D.B. / 71°F W.B.

115°F D.B.

Minimum

67°F D.B. / 57°F W.B.

67°F D.B.

Maximum

80°F D.B. / 67°F W.B.

Minimum

— D.B. / — W.B.

■ HEAT PUMP MODEL
Model
STB0823H1

Cooling

Heating

Temperature

Indoor Air Intake Temp.

Maximum

95°F D.B. / 71°F W.B.

115°F D.B.

Minimum

67°F D.B. / 57°F W.B.

67°F D.B.

Maximum

80°F D.B. / 67°F W.B.

75°F D.B. / 65°F W.B.

Minimum

— D.B. / — W.B.

17°F D.B. / 15°F W.B.

1

Outdoor Air Intake Temp.

2. SPECIFICATIONS
2-1. Unit Specifications
Models

STB0810C1

STB1010C1

STB1020C1

Model Number

STB1220C1
STB0810C1

STB1010C1

STB1020C1

STB1220C1

115

115

230 / 208

230 / 208

Voltage (V)
Performance
Cooling Capacity
Air Flow....Hi
Dihumidification

BTU/h
CFM (CMM)
Pints/h

Electrical Rating
Available voltage range
Cooling
Amperes
Watts
Power factor
EER
Starting amperes
Recommeded Circuit Protection

8,200
270 (7.65)
2.0

V
A
W
%
BTU/hW
A
A

104 ~ 126
8.3
940
98
8.7
43
15
Parallel

Plug Type
Features
Controls / Temperature control
Control unit
Timer
Fan speeds
Airflow direction (Indoor)

COOLING
10,200
9,700 / 9,500 11,500 / 11,300
270 (7.65)
270 (7.65)
270 (7.65)
2.7
2.6
3.2

10.6
1,200
98
8.5
53
15
Parallel

253 ~ 187
5.0 / 5.3
6.1 / 6.6
1,140 / 1,110 1,350 / 1,330
99 / 100
96 / 97
8.5 / 8.5
8.5 / 8.5
30
34
15
15
Tandem
Tandem

Mechanical / Thermostat

2

2

Horizontal
Vertical

Air filter
Air exhaust
Compressor
R22-Amount charged at shipment
Refrigerant control
Operation sound
Indoor : Hi / Lo
Outdoor : Hi / Lo
Dimensions & Weight
Unit dimensions
(Refer to page 7)

Height
Width
Depth
Package dimensions Height
Width
Depth
Weight
Net
Shipping
Shipping volume

OZ

20.1

dB-A
dB-A

57 / 55
63 / 60

In
In
In
In
In
In
lbs
lbs
Cuft

2
Manual
Manual
Washable
Yes
Rotary (Hermetic)
28.2
23.3
Capillary tube
60 / 57
60 / 57
68 / 64
68 / 64

28.2
60 / 57
68 / 64

15-3/4
25-15/16
21-1/2
18-5/16
29-1/8
24-11/16
82
93

90
101

89
100

93
104

7.62
DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:
Cooling : Indoor air temperature
80°F D.B. / 67°F W.B. Heating : Indoor air temperature
Outdoor air temperature 95°F D.B. / 75°F W.B.
Outdoor air temperature

Parallele
115V
15AMP

2

Tandem
230/208V
15AMP

70°F D.B.
47°F D.B. / 43°F W.B.

Perpendicular
230/208V
20AMP

Wall Receptacles

Wall Sleeve Dimension
2

Models

STB0811C1

STB1023C1

STB1123C1

Model Number

STB0823H1
STB0811C1

STB1023C1

STB1123C1

STB0823H1

115

230 / 208

230 / 208

230 / 208

Voltage (V)
Performance
Cooling Capacity
Heat pump Capacity
Electric Heating Capacity
Air Flow....Hi
Dihumidification
Electrical Rating
Available voltage range
Cooling
Amperes
Watts
Power factor
EER
Starting amperes
Heat pump
Amperes
Watts
COP
Electric Heater
Amperes
Watts
Element
Recommeded Circuit Protection

BTU/h
BTU/h
BTU/h
CFM (CMM)
Pints/h

V
A
W
%
BTU/hW
A
A
W
W/W
A
W
kW
A

Plug Type
Features
Controls / Temperature control
Control unit
Timer
Fan speeds
Airflow direction (Indoor)
Air filter
Air exhaust
Compressor
R22-Amount charged at shipment
Refrigerant control
Operation sound
Indoor : Hi / Lo
Outdoor : Hi / Lo
Dimensions & Weight
Unit dimensions
(Refer to page 7)

Height
Width
Depth
Package dimensions Height
Width
Depth
Weight
Net
Shipping
Shipping volume

COOLING & ELECTRIC HEATING
HEAT PUMP
8,000
9,500 / 9,300 11,300 / 11,000 8,000 / 7,800
—
—
—
7,500 / 7,400
4,040
11,250 / 9,200 11,250 / 9,200 11,250 / 9,200
250 (7.08)
250 (7.08)
250 (7.08)
250 (7.08)
2.0
2.6
3.2
2.0

104 ~ 126
8.3
920
96
8.7
43
—
—
—
12.0
1,350
1.22
15
Parallel

5.0 / 5.3
1,120 / 1,090
97 / 99
8.5 / 8.5
30
—
—
—
15.5 / 14.2
3,550 / 2,930
3.4
20

253 ~ 187
6.0 / 6.5
1,330 / 1,310
96 / 97
8.5 / 8.5
34
—
—
—
15.5 / 14.2
3,550 / 2,930
3.4
20
Perpendicular

4.2 / 4.5
940 / 920
97 / 98
8.5 / 8.5
25
4.0 / 4.3
880 / 870
2.5 / 2.5
15.5 / 14.2
3,550 / 2,930
3.4
20

Mechanical / Thermostat

2
Horizontal
Vertical

OZ

20.1

dB-A
dB-A

57 / 55
64 / 61

In
In
In
In
In
In
lbs
lbs
Cuft

2

2

Manual
Manual
Washable
Yes
Rotary (Hermetic)
23.3
27.2
Capillary tube
60 / 56
60 / 56
68 / 62
68 / 62

2

28.2
3
57 / 55
64 / 61

15-3/4
25-15/16
21-1/2
18-5/16
29-1/8
24-11/16
82
93

89
100

95
106

90
101

7.62
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
3

2-2. Major Component Specifications
Models

STB0810C1

STB1010C1

Model Number

STB1020C1

STB1220C1

STB0810C1

STB1010C1

STB1020C1

STB1220C1

Rotary (Hermetic)

Rotary (Hermetic)

Rotary (Hermetic)

Rotary (Hermetic)

C-1R62H2D

C-R80H2C

C-R76H6K

C-R95H6C

Controller PCB
Part No.
Controls
Control circuit fuse
Compressor
Type
Compressor model
( Parts code No. )
Source

( 80663842-S )

( 80680342-S )

( 80677946-S )

( 80695246-S )

115V 1-phase 60Hz

115V 1-phase 60Hz

230-208V 1-phase 60Hz

230-208V 1-phase 60Hz

Nominal output

W

625

800

750

950

Compressor oil ... Amount

cc

SUNISO 4GSD-T....350

SUNISO 4GSD-T....350

SUNISO 4GSD-T....350

SUNISO 4GSD-T....450

Ω

C-R: 1.010

C-R: 0.639

C-R: 2.288

C-R: 1.886

Coil resistance (at 77°F)

Safety device

Type
Overload relay

C-S: 5.996

C-S: 2.410

C-S: 5.385

C-S: 0.639

External protector

External protector

External protector

External protector
MRA99038-9201

MRA98869-9200

MRA98748-9200

MRA98735-9201

Operating temp. Open

°F

293±9

302±9

311±9

293±9

Close

°F

156±20

156±20

156±20

156±20

Trip in 6 to sec.at 30.5A

Trip in 6 to 16 sec. at 40A

Trip in 6 to 16 sec. at 24A

Trip in 6 to 16 sec. at 24A

25

35

20

22.5

400

400

400

400

Operating amp.(at 77 °F)
Run capacitor

µF
VAC

Fan & Fan Motor
Fan Type

Indoor (Dia. / Depth)

In

Outdoor (Dia. / Depth)

In

Centrifigal (Dia 7-3/32 : Depth 3-17/32)
Puropeller (Dia 12-19/32 : Depth 3-3/8)

Fan motor model ... Q'ty
Source

KFC6S-91A1P...1

KFC6S-91A6P...1

115V 1-phase 60Hz

230-208V 1-phase 60Hz

6...1,110(115V)

6...1,080(208V) 1,100(230V)

90

90

No. of poles ... rpm, High (V)
Nominal output

W

Coil resistance (at 68°F)

Ω

Safety device

BLU-BLN: 16.59

WHT-BLN: 33.46

BLU-PNK: 17.19

WHT-PNK: 59.31

Type
Operating temp. Open
Close

Run capacitor

WHT-BLN: 60.10

BLU-YEL: 7.84

Thermal protector

Thermal protector

°F

248±9

248±9

°F

171±27

171±27

µF

16

4

220

440

VAC
Heat Exch. Coil
Evaporator

Coil

Aluminum plate fin / Copper tube

Rows

2

Fins per inch
Face area
Condenser

ft 2

2

3

19.5

19.5

19.5

15.9

1.049

1.049

1.049

1.049

Coil

Aluminum plate fin / Copper tube

Rows
Fins per inch
Face area

2

ft 2

2

3

3

3

18.1

14.1

14.1

18.1

1.075

1.075

1.075

1.075

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

4

Models

STB0811C1

STB1023C1

Model Number

STB1123C1

STB0823H1

STB0811C1

STB1023C1

STB1123C1

STB0823H1

Controller PCB
Part No.

851-0-5171-660-00

Controls

POW-STBH

Control circuit fuse
Compressor
Type
Compressor model
( Parts code No. )
Source

Rotary (Hermetic)

Rotary (Hermetic)

Rotary (Hermetic)

Rotary (Hermetic)

C-1R62H2D

C-R76H6K

C-R95H6C

C-1R65H6W

( 80663842-s)

( 80677946-S )

( 80695246-S )

( 80665146-S )

115V 1-phase 60Hz

230-208V 1-phase 60Hz

230-208V 1-phase 60Hz

230-208V 1-phase 60Hz

Nominal output

W

625

750

950

650

Compressor oil ... Amount

cc

SUNISO 4GSD-T....350

SUNISO 4GSD-T....350

SUNISO 4GSD-T....450

SUNISO 4GSD-T....350

Ω

C-R: 1.010

C-R: 2.288

C-R: 1.886

C-R: 3.311

Coil resistance (at 77°F)

Safety devices Type
Overload relay

C-S: 5.996

C-S: 5.385

C-S: 0.639

C-S: 3.529

External protector

External protector

External protector

External protector
MRA99082-9201

MRA98869-9200

MRA98735-9201

MRA99038-9201

Operating temp. Open

°F

293±9

311±9

293±9

293±9

Close

°F

156±20

156±20

156±20

156±20

Trip in 6 to sec.at 30.5A

Trip in 6 to 16 sec. at 24A

Trip in 6 to 16 sec. at 24A

Trip in 6 to 16 sec. at 16.5A

25

20

22.5

22.5

400

400

400

400

Operating amp.(at 77 °F)
Run capacitor

µF
VAC

Fan & Fan Motor
Fan Type

Indoor (Dia. / Depth)

In

Outdoor (Dia. / Depth)

In

Fan motor model ... Q'ty
Source
No. of poles ... rpm, High (V)
Nominal output

W

Coil resistance (at 68°F)

Ω

Safety device

Type
Operating temp. Open
Close

Run capacitor

Centrifigal (Dia 7-3/32 : Depth 3-17/32)
Puropeller (Dia 12-19/32 : Depth 3-3/8)
KFC6S-91A1P...1

KFC6S-91A6P...1

115V 1-phase 60Hz

230-208V 1-phase 60Hz

6...1,110(115V)

6...1,080(208V) 1,100(230V)

90

90

BLU-BLN: 16.59

WHT-BLN: 60.10

BLU-YEL: 7.84

WHT-BLN: 33.46

BLU-PNK: 17.19

WHT-PNK: 59.31

Thermal protector

Thermal protector

°F

248±9

248±9

°F

171±27

171±27

µF

16

4

220

440

VAC
Heat Exch. Coil
Evaporator

Coil

Aluminum plate fin / Copper tube

Rows

2

Fins per inch
Face area
Condenser

ft 2

2

3

19.5

19.5

15.9

14.1

1.049

1.049

1.049

1.049

Coil

Aluminum plate fin / Copper tube

Rows
Fins per inch
Face area

3

ft 2

2

3

3

3

18.1

14.1

18.1

14.1

1.075

1.075

1.075

1.075

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

5

2-3. Other Component Specifications
Models

STB0810C1
STB0811C1

STB1010C1
STB1023C1

STB1020C1
STB1123C1

STB1220C1
STB0823H1

Room Thermostat

YTB-2U136

Model

Openrating temp.

YTB-2U358

STB1020C1

STB0810C1

STB1220C1

STB1010C1

STB0811C1

STB1123C1

Cold

°F

ON: 65 / OFF: 61±3 (Diff: 4 Deg)

Warm

°F

ON: 90 / OFF:86

PTC Thermister (for compressor start up)

STB1023C1

PTH491A04AR470N500

Model

STB0810C1 STB0811C1

Resistance

at 77°F

Ω

47±30%

Relay (Heater)

VC20A-115-S

Model

VC20A-230-S

STB0811C1

STB1023C1

STB1123C1

Coil rating

AC115V , 60Hz

AC208/230V , 60Hz

Contact rating

AC265V , 22A

AC265V , 22A

AH-H06S

AH-H10S

Electoric Heater Ass'y
Model

STB0811C1

STB1023C1

STB0823H1

STB1123C1
Heater Element

Rating

1.22 kW , 115V

Resistance

Ω

Watt Dinsty

w/in2

Dimension
Heater Thermo.

In

9.5±1.5% (at 68°F)

13.6±1.5% (at 68°F)

8.9

13.2

Dia 3/8 , Leng 36

Type

Dia 3/8 , Leng 36
CS-7L

Openrating temp
Fuse

3.4 kW , 230V

°F

OFF : 122±5 / ON : 95±9

Type

SF-152U

Openrating temp

°F

306±5

Power Trnsformer

ATR-J64ULN2

Model

STB0823H1

Rating

Primary

AC220V , 60Hz

Secondary

AC19V , 0.3A

Thermister (Room sensor)

PBC-41E-S29

Model
Resistance

STB0823H1
at 32°F

kΩ

15±5%

Thermister (Outdoor coil)

PBC-41E-S14

Model
Resistance

STB0823H1
at 32°F

kΩ

15±5%

4-way Valve (Solenoid coil)

CHV-01AQ503UA1(Coil) / CHV-01U1(Valve)

Model

STB0823H1

Coil raiting

AC208/230V (60Hz) , 6W

6

3. DIMENSIONAL DATA
Models

STB0810C1
STB0811C1

STB1010C1
STB1023C1

STB1020C1
STB1123C1

STB1220C1
STB0823H1

■ Unit Dimension

Top view

/16"

15

21 -

/2"

1

15 -

3

/4"

25 -

Front view

Side view
Unit : inch

■ Wall Sleeve Dimension

■ Dimension of Wall Opening

26 -

/8

1

"

Wall opening of
26-1/8˝ x 15-3/4˝
is required

/8"

5

15 -

/8"

7

16 "

26

Minimum Wall
Sleeve Opening

15 -

/4"

3

Unit : inch
7

4. REFRIGERANT FLOW DIAGRAM
Models

STB0810C1
STB0811C1

STB1010C1
STB1023C1

STB1020C1
STB1123C1

STB1220C1

Compressor

Condenser

Evaporator

Accumulator

Capillary
tube

Accumulator

Compressor

STB0823H1

4-way
valve

Capillary
tube

Outdoor heat
exchanger

Indoor heat
exchanger

Model

Capillary
tube

Cooling cycle
Check
valve

8

Heating cycle

5. PERFORMANCE DATA
5-1. Cooling Capacity
Model

STB0810C1
115 V Single phase 60 Hz
RATING CAPACITY
AIR FLOW RATE
EVAPORATOR
ENT. TEMP. °F (°C)
W.B.
D.B.

59
(15.0)

63
(17.2)

67
(19.4)

70
(21.1)

73
(22.8)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

8,200 BTU/h
270 CFM

TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC

67
(19.4)
8,260
0.60
6,260
7,310
8,260
8,260
8,260
8,260
9,350
0.62
5,170
6,220
7,270
8,320
8,860
8,860
9,430
0.64
4,050
5,100
6,150
7,200
8,250
9,300
10,000
0.66
3,970
5,020
6,070
7,120
8,170
10,610
0.67
3,850
4,900
5,950
7,000

CONDENSER
OUTDOOR AMBIENT TEMP. °F( °C)
75
85
95
105
(23.9)
(29.4)
(35.0)
(40.6)
7,900
7,540
7,180
6,750
0.65
0.70
0.75
0.79
6,100
5,940
5,780
5,580
7,150
6,990
6,830
6,630
7,900
7,540
7,180
6,750
7,900
7,540
7,180
6,750
7,900
7,540
7,180
6,750
7,900
7,540
7,180
6,750
8,480
8,090
7,710
7,250
0.67
0.72
0.77
0.81
5,010
4,840
4,680
4,490
6,060
5,890
5,730
5,540
7,110
6,940
6,780
6,590
8,160
7,990
7,710
7,250
8,480
8,090
7,710
7,250
8,480
8,090
7,710
7,250
9,020
8,610
# 8,200
7,710
0.69
0.74
0.79
0.84
3,890
3,730
3,570
3,380
4,940
4,780
4,620
4,430
5,990
5,830
5,670
5,480
7,040
6,870
6,720
6,530
8,090
7,920
7,770
7,580
9,020
8,610
8,200
7,710
9,560
9,130
8,690
8,170
0.71
0.76
0.82
0.86
3,820
3,660
3,500
3,320
4,860
4,710
4,550
4,370
5,910
5,760
5,600
5,420
6,960
6,810
6,650
6,470
8,010
7,860
7,700
7,520
10,150
9,670
9,130
8,540
0.73
0.78
0.84
0.89
3,690
3,530
3,360
3,170
4,740
4,580
4,400
4,220
5,790
5,630
5,450
5,260
6,840
6,680
6,500
6,310

TC : Total Cooling Capacity (BTU/h)
SHC : Sensible Heat Capacity (BTU/h)
CM : Compressor Input (kW)
Rating conditions (#Mark) are
Outdoor Ambient Temp. 95°F (35°C) D.B.
Indoor Air Intake Temp. 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.
9

110
(43.3)
6,210
0.84
5,350
6,210
6,210
6,210
6,210
6,210
6,670
0.86
4,260
5,310
6,360
6,670
6,670
6,670
7,090
0.89
3,150
4,200
5,250
6,290
7,090
7,090
7,520
0.91
3,090
4,140
5,190
6,240
7,290
7,950
0.94
2,970
4,020
5,070
6,120

Model

STB1010C1
115 V Single phase 60 Hz
RATING CAPACITY
AIR FLOW RATE
EVAPORATOR
ENT. TEMP. °F (°C)
W.B.
D.B.

59
(15.0)

63
(17.2)

67
(19.4)

70
(21.1)

73
(22.8)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

10,200 BTU/h
270 CFM

TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC

67
(19.4)
10,280
0.80
7,220
8,270
9,320
10,280
10,280
10,280
11,630
0.82
6,130
7,180
8,230
9,280
10,330
11,030
11,730
0.85
5,000
6,050
7,090
8,140
9,190
10,240
12,430
0.87
4,900
5,950
7,000
8,050
9,100
13,190
0.89
4,760
5,810
6,850
7,900

CONDENSER
OUTDOOR AMBIENT TEMP. °F( °C)
75
85
95
105
(23.9)
(29.4)
(35.0)
(40.6)
9,830
9,380
8,940
8,390
0.87
0.93
1.00
1.06
7,000
6,790
6,580
6,320
8,050
7,840
7,630
7,370
9,100
8,890
8,680
8,390
9,830
9,380
8,940
8,390
9,830
9,380
8,940
8,390
9,830
9,380
8,940
8,390
10,550
10,070
9,590
9,010
0.89
0.95
1.02
1.09
5,910
5,700
5,490
5,240
6,960
6,750
6,540
6,290
8,010
7,800
7,580
7,330
9,060
8,850
8,630
8,380
10,110
9,900
9,590
9,010
10,550
10,070
9,590
9,010
11,220
10,710 # 10,200
9,590
0.92
0.98
1.05
1.12
4,780
4,570
4,360
4,110
5,830
5,620
5,410
5,160
6,880
6,670
6,460
6,210
7,930
7,720
7,510
7,260
8,980
8,770
8,560
8,310
10,030
9,820
9,610
9,360
11,890
11,350
10,810
10,160
0.94
1.01
1.08
1.15
4,690
4,480
4,280
4,040
5,740
5,530
5,330
5,090
6,790
6,580
6,380
6,140
7,840
7,630
7,430
7,190
8,890
8,680
8,480
8,240
12,620
12,030
11,350
10,630
0.97
1.04
1.11
1.18
4,550
4,340
4,100
3,860
5,600
5,390
5,150
4,900
6,650
6,440
6,200
5,950
7,700
7,490
7,250
7,000

TC :
Total Cooling Capacity (BTU/h)
SHC : Sensible Heat Capacity (BTU/h)
CM :
Compressor Input (kW)
Rating conditions (#Mark) are
Outdoor Ambient Temp. 95°F (35°C) D.B.
Indoor Air Intake Temp. 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.
10

110
(43.3)
7,730
1.13
6,020
7,070
7,730
7,730
7,730
7,730
8,290
1.15
4,930
5,980
7,030
8,080
8,290
8,290
8,820
1.19
3,810
4,860
5,910
6,960
8,010
8,820
9,350
1.22
3,740
4,790
5,840
6,890
7,940
9,880
1.26
3,610
4,650
5,700
6,750

Model

STB1020C1
230 V Single phase 60 Hz
RATING CAPACITY
AIR FLOW RATE
EVAPORATOR
ENT. TEMP. °F (°C)
W.B.
D.B.

59
(15.0)

63
(17.2)

67
(19.4)

70
(21.1)

73
(22.8)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

9,700 BTU/h
270 CFM

TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC

67
(19.4)
9,770
0.76
6,980
8,030
9,080
9,770
9,770
9,770
11,060
0.78
5,890
6,940
7,990
9,040
10,090
10,490
11,150
0.80
4,760
5,810
6,860
7,910
8,960
10,010
11,820
0.83
4,670
5,720
6,770
7,820
8,870
12,550
0.84
4,530
5,580
6,630
7,680

CONDENSER
OUTDOOR AMBIENT TEMP. °F( °C)
75
85
95
105
(23.9)
(29.4)
(35.0)
(40.6)
9,350
8,920
8,500
7,980
0.82
0.88
0.94
0.97
6,780
6,580
6,380
6,140
7,830
7,630
7,430
7,190
8,880
8,680
8,480
7,980
9,350
8,920
8,500
7,980
9,350
8,920
8,500
7,980
9,350
8,920
8,500
7,980
10,030
9,570
9,120
8,570
0.84
0.90
0.97
1.00
5,690
5,490
5,290
5,050
6,740
6,540
6,340
6,100
7,790
7,580
7,390
7,150
8,840
8,630
8,440
8,200
9,890
9,570
9,120
8,570
10,030
9,570
9,120
8,570
10,670
10,180 # 9,700
9,120
0.87
0.93
1.00
1.03
4,560
4,360
4,160
3,930
5,610
5,410
5,210
4,980
6,660
6,460
6,260
6,030
7,710
7,510
7,310
7,080
8,760
8,560
8,360
8,130
9,810
9,610
9,410
9,120
11,310
10,800
10,280
9,670
0.89
0.96
1.03
1.06
4,470
4,280
4,090
3,860
5,520
5,330
5,140
4,910
6,570
6,380
6,190
5,960
7,620
7,430
7,240
7,010
8,670
8,480
8,290
8,060
12,000
11,440
10,800
10,110
0.92
0.98
1.05
1.09
4,340
4,140
3,920
3,690
5,390
5,190
4,970
4,740
6,440
6,240
6,020
5,790
7,490
7,290
7,070
6,840

TC :
Total Cooling Capacity (BTU/h)
SHC : Sensible Heat Capacity (BTU/h)
CM :
Compressor Input (kW)
Rating conditions (#Mark) are
Outdoor Ambient Temp. 95°F (35°C) D.B.
Indoor Air Intake Temp. 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.
11

110
(43.3)
7,350
1.00
5,860
6,910
7,350
7,350
7,350
7,350
7,890
1.02
4,760
5,810
6,860
7,890
7,890
7,890
8,390
1.06
3,650
4,700
5,750
6,800
7,850
8,390
8,890
1.09
3,580
4,630
5,680
6,730
7,780
9,400
1.12
3,450
4,500
5,550
6,600

Model

STB1220C1
230 V Single phase 60 Hz
RATING CAPACITY
AIR FLOW RATE
EVAPORATOR
ENT. TEMP. °F (°C)
W.B.
D.B.

59
(15.0)

63
(17.2)

67
(19.4)

70
(21.1)

73
(22.8)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

11,500 BTU/h
270 CFM

TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC

67
(19.4)
11,590
0.92
7,880
8,930
9,980
11,030
11,590
11,590
13,110
0.94
6,790
7,840
8,890
9,940
10,990
12,040
13,220
0.97
5,650
6,700
7,750
8,800
9,850
10,900
14,020
1.00
5,550
6,600
7,650
8,700
9,750
14,880
1.02
5,380
6,430
7,480
8,530

CONDENSER
OUTDOOR AMBIENT TEMP. °F( °C)
75
85
95
105
(23.9)
(29.4)
(35.0)
(40.6)
11,080
10,580
10,070
9,460
0.99
1.06
1.14
1.21
7,620
7,370
7,130
6,830
8,670
8,420
8,180
7,880
9,720
9,470
9,230
8,930
10,770
10,520
10,070
9,460
11,080
10,580
10,070
9,460
11,080
10,580
10,070
9,460
11,890
11,350
10,810
10,160
1.02
1.09
1.17
1.24
6,530
6,280
6,040
5,740
7,580
7,330
7,090
6,790
8,630
8,380
8,140
7,840
9,680
9,430
9,190
8,890
10,730
10,480
10,230
9,940
11,780
11,350
10,810
10,160
12,650
12,070 # 11,500
10,810
1.05
1.13
1.21
1.28
5,400
5,150
4,900
4,620
6,450
6,200
5,950
5,670
7,500
7,250
7,000
6,720
8,550
8,300
8,050
7,770
9,600
9,350
9,100
8,810
10,650
10,400
10,150
9,860
13,410
12,800
12,190
11,460
1.08
1.16
1.24
1.32
5,300
5,050
4,810
4,530
6,350
6,100
5,860
5,580
7,400
7,150
6,910
6,630
8,450
8,200
7,960
7,680
9,500
9,250
9,010
8,730
14,230
13,560
12,800
11,980
1.11
1.19
1.27
1.35
5,140
4,890
4,620
4,330
6,190
5,940
5,670
5,380
7,240
6,990
6,720
6,430
8,290
8,040
7,770
7,480

TC :
Total Cooling Capacity (BTU/h)
SHC : Sensible Heat Capacity (BTU/h)
CM :
Compressor Input (kW)
Rating conditions (#Mark) are
Outdoor Ambient Temp. 95°F (35°C) D.B.
Indoor Air Intake Temp. 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.
12

110
(43.3)
8,710
1.28
6,480
7,530
8,580
8,710
8,710
8,710
9,350
1.31
5,390
6,440
7,490
8,540
9,350
9,350
9,950
1.35
4,260
5,310
6,360
7,410
8,460
9,510
10,540
1.39
4,190
5,230
6,280
7,330
8,380
11,140
1.43
4,040
5,090
6,140
7,190

Model

STB0811C1
115 V Single phase 60 Hz
RATING CAPACITY
AIR FLOW RATE
EVAPORATOR
ENT. TEMP. °F (°C)
W.B.
D.B.

59
(15.0)

63
(17.2)

67
(19.4)

70
(21.1)

73
(22.8)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

8,000 BTU/h
250 CFM

TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC

67
(19.4)
8,060
0.59
5,970
6,940
7,910
8,060
8,060
8,060
9,120
0.61
4,960
5,930
6,900
7,870
8,650
8,650
9,200
0.62
3,920
4,890
5,860
6,830
7,800
8,780
9,750
0.64
3,840
4,810
5,790
6,760
7,730
10,350
0.65
3,720
4,690
5,660
6,640

CONDENSER
OUTDOOR AMBIENT TEMP. °F( °C)
75
85
95
105
(23.9)
(29.4)
(35.0)
(40.6)
7,710
7,360
7,010
6,580
0.64
0.68
0.73
0.79
5,810
5,650
5,490
5,300
6,780
6,620
6,460
6,270
7,710
7,360
7,010
6,580
7,710
7,360
7,010
6,580
7,710
7,360
7,010
6,580
7,710
7,360
7,010
6,580
8,270
7,900
7,520
7,070
0.65
0.70
0.75
0.81
4,800
4,630
4,470
4,290
5,770
5,610
5,450
5,260
6,740
6,580
6,420
6,230
7,710
7,550
7,390
7,070
8,270
7,900
7,520
7,070
8,270
7,900
7,520
7,070
8,800
8,400
# 8,000
7,520
0.67
0.72
0.77
0.84
3,750
3,600
3,440
3,250
4,730
4,570
4,410
4,220
5,700
5,540
5,380
5,200
6,670
6,510
6,350
6,170
7,640
7,480
7,330
7,140
8,610
8,400
8,000
7,520
9,330
8,900
8,480
7,970
0.69
0.74
0.80
0.86
3,680
3,530
3,370
3,190
4,660
4,500
4,350
4,160
5,630
5,470
5,320
5,130
6,600
6,440
6,290
6,110
7,570
7,420
7,260
7,080
9,900
9,430
8,900
8,340
0.71
0.76
0.82
0.88
3,570
3,410
3,230
3,040
4,540
4,380
4,200
4,020
5,510
5,350
5,180
4,990
6,480
6,320
6,150
5,960

TC :
Total Cooling Capacity (BTU/h)
SHC : Sensible Heat Capacity (BTU/h)
CM :
Compressor Input (kW)
Rating conditions (#Mark) are
Outdoor Ambient Temp. 95°F (35°C) D.B.
Indoor Air Intake Temp. 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.
13

110
(43.3)
6,060
0.85
5,070
6,040
6,060
6,060
6,060
6,060
6,500
0.87
4,050
5,030
6,000
6,500
6,500
6,500
6,920
0.90
3,020
3,990
4,970
5,940
6,910
6,920
7,340
0.92
2,970
3,940
4,910
5,880
6,850
7,750
0.95
2,860
3,830
4,800
5,770

Model

STB1023C1
230 V Single phase 60 Hz
RATING CAPACITY
AIR FLOW RATE
EVAPORATOR
ENT. TEMP. °F (°C)
W.B.
D.B.

59
(15.0)

63
(17.2)

67
(19.4)

70
(21.1)

73
(22.8)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

9,500 BTU/h
250 CFM

TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC

67
(19.4)
9,570
0.74
6,700
7,670
8,640
9,570
9,570
9,570
10,830
0.76
5,690
6,660
7,630
8,600
9,580
10,270
10,930
0.79
4,640
5,610
6,580
7,550
8,530
9,500
11,580
0.81
4,550
5,520
6,500
7,470
8,440
12,290
0.83
4,410
5,380
6,360
7,330

CONDENSER
OUTDOOR AMBIENT TEMP. °F( °C)
75
85
95
105
(23.9)
(29.4)
(35.0)
(40.6)
9,160
8,740
8,320
7,820
0.80
0.86
0.92
0.96
6,500
6,300
6,100
5,860
7,470
7,270
7,070
6,840
8,440
8,240
8,040
7,810
9,160
8,740
8,320
7,820
9,160
8,740
8,320
7,820
9,160
8,740
8,320
7,820
9,820
9,380
8,930
8,390
0.83
0.88
0.95
0.99
5,490
5,290
5,090
4,850
6,460
6,260
6,060
5,830
7,430
7,230
7,030
6,800
8,400
8,200
8,000
7,770
9,370
9,170
8,930
8,390
9,820
9,380
8,930
8,390
10,450
9,980
# 9,500
8,930
0.85
0.91
0.98
1.02
4,440
4,240
4,040
3,810
5,410
5,210
5,020
4,790
6,380
6,180
5,990
5,760
7,350
7,150
6,960
6,730
8,320
8,130
7,930
7,700
9,300
9,100
8,900
8,670
11,080
10,570
10,070
9,470
0.87
0.94
1.01
1.05
4,350
4,160
3,970
3,740
5,330
5,130
4,940
4,710
6,300
6,100
5,910
5,690
7,270
7,080
6,880
6,660
8,240
8,050
7,860
7,630
11,760
11,200
10,570
9,900
0.90
0.96
1.03
1.08
4,220
4,020
3,800
3,570
5,190
5,000
4,780
4,540
6,160
5,970
5,750
5,520
7,140
6,940
6,720
6,490

TC :
Total Cooling Capacity (BTU/h)
SHC : Sensible Heat Capacity (BTU/h)
CM :
Compressor Input (kW)
Rating conditions (#Mark) are
Outdoor Ambient Temp. 95°F (35°C) D.B.
Indoor Air Intake Temp. 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.
14

110
(43.3)
7,200
1.01
5,580
6,550
7,200
7,200
7,200
7,200
7,720
1.03
4,570
5,540
6,510
7,480
7,720
7,720
8,220
1.07
3,530
4,500
5,470
6,450
7,420
8,220
8,710
1.10
3,460
4,440
5,410
6,380
7,350
9,210
1.13
3,340
4,310
5,280
6,250

Model

STB1123C1
230 V Single phase 60 Hz
RATING CAPACITY
AIR FLOW RATE
EVAPORATOR
ENT. TEMP. °F (°C)
W.B.
D.B.

59
(15.0)

63
(17.2)

67
(19.4)

70
(21.1)

73
(22.8)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

11,300 BTU/h
250 CFM

TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC

67
(19.4)
11,380
0.90
7,610
8,590
9,560
10,530
11,380
11,380
12,890
0.93
6,610
7,580
8,550
9,520
10,490
11,470
13,000
0.96
5,550
6,520
7,490
8,460
9,430
10,410
13,770
0.98
5,450
6,420
7,390
8,360
9,330
14,620
1.00
5,290
6,260
7,230
8,200

CONDENSER
OUTDOOR AMBIENT TEMP. °F( °C)
75
85
95
105
(23.9)
(29.4)
(35.0)
(40.6)
10,890
10,400
9,900
9,300
0.98
1.04
1.12
1.19
7,360
7,110
6,860
6,570
8,330
8,080
7,830
7,540
9,300
9,050
8,800
8,510
10,280
10,020
9,780
9,300
10,890
10,400
9,900
9,300
10,890
10,400
9,900
9,300
11,680
11,150
10,620
9,980
1.00
1.07
1.15
1.22
6,350
6,100
5,850
5,560
7,320
7,070
6,820
6,530
8,290
8,040
7,790
7,500
9,270
9,010
8,770
8,470
10,240
9,990
9,740
9,450
11,210
10,960
10,620
9,980
12,430
11,870 # 11,300
10,620
1.03
1.11
1.19
1.26
5,290
5,040
4,800
4,510
6,260
6,020
5,770
5,480
7,240
6,990
6,740
6,450
8,210
7,960
7,710
7,430
9,180
8,930
8,690
8,400
10,150
9,900
9,660
9,370
13,180
12,580
11,980
11,260
1.06
1.14
1.22
1.30
5,200
4,950
4,710
4,430
6,170
5,920
5,680
5,400
7,140
6,890
6,650
6,370
8,110
7,870
7,630
7,340
9,080
8,840
8,600
8,310
13,980
13,320
12,580
11,770
1.09
1.17
1.25
1.33
5,040
4,790
4,520
4,230
6,020
5,770
5,490
5,200
6,990
6,740
6,460
6,170
7,960
7,710
7,430
7,140

TC :
Total Cooling Capacity (BTU/h)
SHC : Sensible Heat Capacity (BTU/h)
CM :
Compressor Input (kW)
Rating conditions (#Mark) are
Outdoor Ambient Temp. 95°F (35°C) D.B.
Indoor Air Intake Temp. 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.
15

110
(43.3)
8,560
1.26
6,210
7,180
8,160
8,560
8,560
8,560
9,190
1.29
5,200
6,170
7,150
8,120
9,090
9,190
9,770
1.33
4,160
5,130
6,100
7,070
8,040
9,020
10,360
1.37
4,080
5,050
6,020
6,990
7,970
10,950
1.41
3,940
4,910
5,880
6,850

Model

STB0823H1
230 V Single phase 60 Hz
RATING CAPACITY
AIR FLOW RATE
EVAPORATOR
ENT. TEMP. °F (°C)
W.B.
D.B.

59
(15.0)

63
(17.2)

67
(19.4)

70
(21.1)

73
(22.8)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

70 (21.1)
73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

73 (22.8)
77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

77 (25.0)
80 (26.7)
84 (28.9)
88 (31.1)

8,000 BTU/h
250 CFM

TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC
SHC
TC
CM
SHC
SHC
SHC
SHC

67
(19.4)
8,060
0.61
5,980
6,950
7,920
8,060
8,060
8,060
9,120
0.62
4,960
5,940
6,910
7,880
8,650
8,650
9,200
0.64
3,920
4,890
5,870
6,840
7,810
8,780
9,750
0.66
3,850
4,820
5,790
6,760
7,740
10,350
0.67
3,730
4,700
5,670
6,640

CONDENSER
OUTDOOR AMBIENT TEMP. °F( °C)
75
85
95
105
(23.9)
(29.4)
(35.0)
(40.6)
7,710
7,360
7,010
6,580
0.66
0.70
0.75
0.80
5,810
5,650
5,490
5,300
6,790
6,630
6,470
6,270
7,710
7,360
7,010
6,580
7,710
7,360
7,010
6,580
7,710
7,360
7,010
6,580
7,710
7,360
7,010
6,580
8,270
7,900
7,520
7,070
0.67
0.72
0.77
0.82
4,800
4,640
4,480
4,290
5,770
5,610
5,450
5,260
6,750
6,580
6,430
6,240
7,720
7,560
7,400
7,070
8,270
7,900
7,520
7,070
8,270
7,900
7,520
7,070
8,800
8,400
# 8,000
7,520
0.69
0.74
0.80
0.85
3,760
3,600
3,450
3,260
4,730
4,570
4,420
4,230
5,700
5,550
5,390
5,200
6,680
6,520
6,360
6,170
7,650
7,490
7,330
7,150
8,620
8,400
8,000
7,520
9,330
8,900
8,480
7,970
0.71
0.76
0.82
0.87
3,690
3,530
3,380
3,200
4,660
4,510
4,350
4,170
5,630
5,480
5,320
5,140
6,610
6,450
6,300
6,110
7,580
7,420
7,270
7,090
9,900
9,430
8,900
8,340
0.73
0.78
0.84
0.90
3,570
3,410
3,240
3,050
4,550
4,390
4,210
4,020
5,520
5,360
5,180
5,000
6,490
6,330
6,150
5,970

TC :
Total Cooling Capacity (BTU/h)
SHC : Sensible Heat Capacity (BTU/h)
CM :
Compressor Input (kW)
Rating conditions (#Mark) are
Outdoor Ambient Temp. 95°F (35°C) D.B.
Indoor Air Intake Temp. 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.
16

110
(43.3)
6,060
0.85
5,070
6,040
6,060
6,060
6,060
6,060
6,500
0.87
4,060
5,030
6,000
6,500
6,500
6,500
6,920
0.90
3,030
4,000
4,970
5,950
6,920
6,920
7,340
0.92
2,970
3,950
4,920
5,890
6,860
7,750
0.95
2,860
3,830
4,810
5,780

5-2. Heating Capacity (Heat pump Performance)
STB0823H1
Fan speed : High

Heating capacity ratio (%)

Model

120
110

100
90
80
70
60
50
40
30
20
10
0
17 20

30

40

47

50

60

Outdoor ambient temperature (°F DB)
NOTE

1) ● … Point of rating condition
Black dot in the chart indicates the following rating condition.
Indoor:
70°F (21.1°C) D.B.
Outdoor: 47°F (8.3°C) D.B. / 43°F (6.1°C) W.B.
2) Above characteristics indicates heat pump heating operation, which does not include
elctric heater operation.
3) Because this air conditioner heats a room by drawing in the heat of the outside
air (heat pump system), the heating efficiency will fall off when the outdoor temperature
is very low, which consequently makes the room temperature decrease. At this time,
heat is provided by the electric heater instead of heat pump. See page 44 for detail.

17

6. ELECTRICAL DATA
6-1. Electrical Characteristics
Cooling only models
Model

STB0810C1
Outdoor Unit
Fan Motor
Performance at
Rating Conditions

Compressor
115V 1-phase 60Hz

Running Amps.
Power Input

Full Load Conditions Running Amps.
Power Input

Model

Complete Unit

A

1.26

7.04

8.3

kW

0.145

0.795

0.94

A

1.26

8.34

9.6

kW

0.145

0.935

1.08

STB1010C1
Outdoor Unit
Fan Motor
Performance at
Rating Conditions

115V 1-phase 60Hz
Running Amps.
Power Input

Full Load Conditions Running Amps.
Power Input

Model

Complete Unit

Compressor

A

1.26

9.34

10.6

kW

0.145

1.055

1.20

A

1.26

11.04

12.3

kW

0.145

1.255

1.40

STB1020C1
Outdoor Unit
Fan Motor
Performance at
Rating Conditions

Compressor

230 / 208V 1-phase 60Hz
Running Amps.
Power Input

Full Load Conditions Running Amps.
Power Input

Model

Complete Unit

A

0.61 / 0.64

kW 0.142 / 0.132
A

0.61 / 0.64

kW 0.142 / 0.132

4.39

/ 4.66

0.998 / 0.978
4.99

/ 5.26

1.118 / 1.098

5.0
1.14
5.6
1.26

/

5.3

/ 1.11
/

5.9

/ 1.23

STB1220C1
Outdoor Unit
Fan Motor
Performance at
Rating Conditions

Complete Unit

Compressor

230 / 208V 1-phase 60Hz
Running Amps.
Power Input

Full Load Conditions Running Amps.
Power Input

A

0.61 / 0.64

kW 0.142 / 0.132
A

0.61 / 0.64

kW 0.142 / 0.132

Rating Conditions

5.49

/ 5.96

1.208 / 1.198
6.29

/ 6.96

1.428 / 1.438

6.1
1.35
6.9
1.57

/

/ 1.33
/

7.6

/ 1.57

: Indoor Air Temperature 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.
Outdoor Air Temperature 95°F (35°C) D.B.
Full Load Conditions : Indoor Air Temperature 90°F (32.2°C) D.B. / 73°F (22.8°C) W.B.
Outdoor Air Temperature 110°F (43.3°C) D.B.

18

6.6

Cooling & electric heating models
Model

STB0811C1
Outdoor Unit
Fan Motor
Performance at
Rating Conditions

Compressor
115V 1-phase 60Hz

Running Amps.
Power Input

Full Load Conditions Running Amps.
Power Input

Model

Complete Unit

A

1.26

7.04

8.3

kW

0.145

0.775

0.92

A

1.26

8.34

9.6

kW

0.145

0.945

1.09

STB1023C1
Outdoor Unit
Fan Motor
Performance at
Rating Conditions

230 / 208V 1-phase 60Hz
Running Amps.
Power Input

Full Load Conditions Running Amps.
Power Input

Model

Complete Unit

Compressor

A

0.61 / 0.64

kW 0.142 / 0.132
A

0.61 / 0.64

kW 0.142 / 0.132

4.39

/ 4.66

0.978 / 0.958
4.99

/ 5.26

1.128 / 1.088

5.0
1.12
5.6
1.27

/

5.3

/ 1.09
/

5.9

/ 1.22

STB1123C1
Outdoor Unit
Fan Motor
Performance at
Rating Conditions

Complete Unit

Compressor

230 / 208V 1-phase 60Hz
Running Amps.
Power Input

Full Load Conditions Running Amps.
Power Input

A

0.61 / 0.64

kW 0.142 / 0.132
A

0.61 / 0.64

kW 0.142 / 0.132

Rating Conditions

5.39

/ 5.86

1.188 / 1.178
6.29

/ 6.86

1.408 / 1.408

6.0
1.33
6.9
1.55

/
/

7.5

/ 1.54

: Indoor Air Temperature 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.
Outdoor Air Temperature 95°F (35°C) D.B.
Full Load Conditions : Indoor Air Temperature 90°F (32.2°C) D.B. / 73°F (22.8°C) W.B.
Outdoor Air Temperature 110°F (43.3°C) D.B.

19

6.5

/ 1.31

Heat pump model
Model

STB0823H1
COOLING
Outdoor Unit
Fan Motor
Performance at
Rating Conditions

Complete Unit

Compressor

230 / 208V 1-phase 60Hz
Running Amps.
Power Input

Full Load Conditions Running Amps.
Power Input

A

0.61 / 0.64

kW 0.142 / 0.132
A

0.61 / 0.64

kW 0.142 / 0.132

3.59

/ 3.86

0.798 / 0.788
4.29

/ 4.46

0.948 / 0.918

4.2
0.94
4.9
1.09

/

4.5

/ 0.92
/

5.1

/ 1.05

Rating Conditions

: Indoor Air Temperature 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.
Outdoor Air Temperature 95°F (35°C) D.B.
Full Load Conditions : Indoor Air Temperature 90°F (32.2°C) D.B. / 73°F (22.8°C) W.B.
Outdoor Air Temperature 110°F (43.3°C) D.B.
HEATING
Outdoor Unit
Fan Motor
Performance at
Rating Conditions

Compressor

230 / 208V 1-phase 60Hz
Running Amps.
Power Input

Full Load Conditions Running Amps.
Power Input
Rating Conditions

Complete Unit

A

0.61 / 0.64

kW 0.142 / 0.132
A

0.61 / 0.64

kW 0.142 / 0.132

3.39

/ 3.66

0.738 / 0.738
4.09

/ 4.51

0.898 / 0.888

4.0
0.88
4.7
1.04

/
/

5.2

/ 1.02

: Indoor Air Temperature 70°F (21.1°C) D.B.
Outdoor Air Temperature 47°F (8.3°C) D.B. / 43°F (6.1°C) W.B.

Full Load Conditions : Indoor Air Temperature 80°F (26.7°C) D.B.
Outdoor Air Temperature 75°F (23.9°C) D.B. / 65°F (18.3°C) W.B.

20

4.3

/ 0.87

WARNING

6-2. Electrical Wiring Diagrams
Models

STB0810C1

To avoid electrical shock hazard, be sure to
disconnect power before checking,
servicing and/or cleaning any electrical

STB1010C1

LAYOUT FOR ELECTRIC PARTS

Room thermo

Main switch

Capacitor
(FM)
Fancycle
switch
Capacitor
(CM)
Clip power
cord
Thermistor

21

WARNING

Models

STB1020C1

To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.

STB1220C1

LAYOUT FOR ELECTRIC PARTS

Room thermo

Main switch

Capacitor
(FM)
Fancycle
switch
Capacitor
(CM)
Clip power
cord

22

WARNING

Model

To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.

STB0811C1

LAYOUT FOR ELECTRIC PARTS
Main switch
Room thermo
Capacitor
(FM)

Fancycle
switch
Capacitor
(CM)

Relay heater

23

Thermistor

To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.

WARNING

Models

STB1023C1

STB1123C1

LAYOUT FOR ELECTRIC PARTS
Main switch
Room thermo
Capacitor
(FM)

Fancycle
switch
Capacitor
(CM)

Relay heater

24

WARNING

Model

STB0823H1

25

To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.

WARNING

Model

To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.

STB0823H1

LAYOUT FOR ELECTRIC PARTS
Varistor
Main control switch
Capacitor
(FM)

Control switch
temp. setting

Fan
switch

Lid

Thermistor room temp.
Power pack control PCB

Power cord

Power transformer
Capacitor (CM)
BEFORE OPENING THE BOX

AFTER OPENING THE BOX
26

6-3. P.C.B. Ass'y (Printed Pattern)
POW–STBH (For model STB0823H1)

27

7. TROUBLESHOOTING
7-1. Check before and after troubleshooting
WARNING

Hazardous voltage can cause ELECTRIC
SHOCK or DEATH. Disconnect power or turn
off circuit breaker before you start checking
or servicing.

7-1-1. Check power supply.
● Check that voltage is in specified range (±10% of the rating).
● Check that power is being supplied.

7-1-2. Check lead wires and connectors.
● Check that coating of lead wires is not damaged.
● Check that lead wires and connectors are firmly connected.
● Check that wiring is correct.

28

7-2. Air conditioner does not operate.
7-2-1. Circuit breaker trips (or fuse blows).
A. When the circuit breaker is set to ON, it is tripped soon. (Resetting is not possible.)
● There is a possibility of ground fault.
● Check insulation resistance.
If resistance value is 2MΩ or less, insulation is defective (“NO”).

Wall outlet
(Receptacle)

Power plug
1

Circuit
breaker

Window type air conditioner

Power
supply

Ground

WARNING
* Set circuit breaker to OFF.
1

Pull the power plug out of the
wall outlet.
• Measure insulation resistance
of unit.

Insulation of
unit is
defective.

NO

• Measure insulation
resistance of electrical
parts.
(Example)
Compressor, Fan motor,
Capacitor, Relay etc.

NOTE
1. If any poorly insulated part is found, exclude that part from circuit with other parts properly connected, and then
measure insulation resistance of entire air conditioner again to locate defective part.
2. Replace defective part with new one.

29

B. Circuit breaker trips in several minutes after turning the air conditioner on.
● There is a possibility of short circuit.
• Check capacity of circuit breaker.

Replace with suitable
one (larger capacity).

NO
Capacity of circuit breaker is
suitable.

(Only for heat pump model)
• Measure resistance of 4-way valve's
winding.

• Measure resistance of fan motor
winding.

• Measure resistance of compressor
motor winding.

7-2-2. Neither fan motor nor compressor motor runs.
A. Power is not supplied.

• Check power supply.

Circuit breaker
is tripped.

Reset breaker.

Power failure

Wait for recovery
or contact power
company.

NO

Power is being supplied to the unit.

B. Check "MODE selector" on the control panel.
(Cooling only models) and
(Cooling & electric heating models)
Set to "COOL".
• Check that MODE selector switch is
not set at "OFF".

If it is set at OFF.
(Heat pump model)
Set to "COOL"
or "HEAT".

C. Check transformer.
(Only for heat pump model)
• Check continuity of primary and
secondary winding to see if the lead
wires are disconnected.

30

Check PCB Ass'y.

7-3. Some part of air conditioner does not operate.
7-3-1. Only fan does not run.

• Check fan rotation.
Turn fan gently once or twice by
hand.

• Check fan casing
foreign matter on
inside.

Fan cannot
be turned.

Fan motor burnout
or foreign matter in
bearings.

• Measure resistance of fan motor
winding.
OK

• Check fan motor capacitor and
4P-connectors (Socket and Plug).
(Only for heat pump model)
• Check PCB Ass'y . (Power pack)

7-3-2. Electric heater does not work.
Both for (cooling & electric heating models) and (heat pump model)
• Measure resistance of electric
heater winding.

• Measure coil resistance of
heater relay.

• Check to see if the circuit of
heater thermostat is opened or
closed ?

• Check continuity for thermal
fuses.

Blown

Replace them.

(Only for heat pump model)
• Check PCB Ass'y. (Power pack)

31

Remove foreign
matter or repair.

Repair or replace.

7-3-3. Only compressor unit does not run.
A. Check setting temperature.
COOL mode

HEAT mode (Only for heat pump model)

Is room temperature too low ?

Is room temperature too high ?

NO

NO

Try to lower setting temperature by
thermostat knob cooler.

Try to raise setting temperature by
thermostat knob warmer.

B. Check compressor and electrical parts.

Overload relay is working.
(OLR)

• Check compressor motor
capacitor.

YES

• Measure resistance of
compressor motor winding.

Temperature of compressor
is abnormally high.
YES

(Only for 115V models)
• Check PTC thermistor.

YES
Refrigerant gas shortage.

Charge refrigerant gas (R22).

NO

Rotor may be locked up.

Cooling only models
CAUTION

Cooling & electric heating models

● If the unit is turned off during cooling, DO NOT restart it immediately, as this
can damage it. Wait at least 3 minutes or so before starting it again.
Heat pump model
● The compressor does not start up immediately even when the MODE selector
switch is set to COOL or HEAT (It starts operating in about 3 minutes).
● This is because rough 3-minute timer is built into the heat pump model in order
to protect the compressor. When operation is started up or restarted, the fan
operation begins immediately but the compressor starts operating after about
3-minute lag.

32

7-4. Air conditioner operates, but abnormalities are observed.
7-4-1. Operation does not switch from HEAT to COOL (or COOL to HEAT).
(Only for heat pump model)
• Measure resistance of 4–way valve's
winding.

OK

Check PCB Ass'y .

(Power pack)

7-4-2. Poor cooling or heating.

• Measure temperature of suction and
discharge air of air conditioner.

Temperature
difference
is small.

Possibility of
gas shortage.

Charge refrigerant
gas (R22).

Temperature difference between
suction and discharge air is
large enough (In cooling operation:
approx. 14 °F or more).

• Check for clogging of air filter.

Clean filter.
Air filter is clogged.

• Fan speed is set to LOW.

YES

Set fan speed to HIGH.

Reduce cooling or heating
load or replace the air
conditioner with larger
capacity.

• Review cooling load estimate,
if performance of air conditioner is
normal.

7-4-3. Excessive cooling or heating.

• Set temperature is suitable.

NO

Set temperature to higher or
lower value using thermostat.

33

7-5. If a sensor is defective. (Only for heat pump model)
7-5-1. Room temp. thermistor (RTH) is defective.
A. Open
When thermistor opens, the air conditioner will be in the following conditions
as the controller tries to detect extremely low room temperature.
a) In Cooling mode: The air conditioner soon stops and will not start again. (Thermo.OFF)
Compressor does not run.
b) In Heating mode: The air conditioner continues to operate. (Thermo.ON)
(Heat pump)
Electric heater does not stop.
As a result, the room becomes too warm.
Temperature
sensor

B. Short

Lead
wires

When thermistor is short, the air conditioner will be in the following conditions
as the controller tries to detect extremely high room temperature.
Thermistor Structure

a) In Cooling mode: The air conditioner continues to operate. (Thermo.ON)
Compressor does not stop.
As a result, the room becomes too cold.
b) In Heating mode: The air conditioner soon stops and will not start again. (Thermo.OFF)
(Heat pump)
Neither compressor nor electric heater runs.

NOTE

Definition of Open or Short Circuit of Sensor (Thermistor)

Open... A lead wire is broken or disconnected or the circuit inside the temperature sensor is open .
Short... The protective cover of a lead wire has been damaged, and the exposed wire is touching another metal
part, or both lead wires have become exposed and are touching each other. Alternatively, the circuit inside
the temperature sensor is closed.

34

8. CHECKING ELECTRICAL COMPONENTS
8-1. Measurement of Insulation
Resistance

Power plug

● The insulation is in good condition if the resistance
exceeds 2MΩ.

Ground
Probe

8-1-1. Power Cord and Unit

Insulation tester

Clamp the grounding prong of the power plug with a lead
clip of the insulation resistance tester and measure the
resistance by placing a probe on either of the two power
blade. (Fig. 1)

Fig. 1
NOTE
The shape of the power plug may differ from that
of the air conditioner which you are servicing.

Then, also measure the resistance between the
grounding prong and other power blade. (Fig. 1)
Probe

8-1-2. Measurement of Insulation
Resistance for Electrical Parts
Disconnect the lead wires of the desired electric part
from terminal plate, switch, capacitor, etc. Similarly
disconnect the connector. Then measure the insulation
resistance.
(Figs. 2 to 3)

Clip
Copper
tube or
metallic part
Insulation
tester

Refer to Electric Wiring Diagram.

Fig. 2

From fan motor,
compressor and
other parts

NOTE
If the probe cannot enter the poles because the hole is
too narrow then use a probe with a thinner pin.
Metallic
part

Probe

Clip

Insulation
tester

Fig. 3

Fig. 4
35

8-2. Checking Motor Capacitor
Remove the lead wires from the capacitor terminals, and
then place probes on the capacitor terminals as shown in
Fig. 4. Observe the deflection of the pointer, setting the
resistance measuring range of the multimeter to the
maximum value.

Multimeter

The capacitor is “good” if the pointer bounces to a great
extent and then gradually returns to its original position.
The range of deflection and deflection time differ
according to the capacity of the capacitor.

8-3. Checking Fan Motor Winding
Referring to the electrical diagram, disconnect fan motor
connectors, and measure the resistance between each
lead wire with a multimeter.

Compressor motor
capacitor

The multimeter should be set in the X1 range. If the fan
motor is hot, allow a few minutes until it gets cooled
down.

Fan motor
capacitor

When the resistances between each lead wire are those
listed in "2-2. Major Component Specifications" the fan
motor should be normal.

Fig. 4

8-4. Checking Compressor Motor Winding
Checking compressor motor winding can be done in the
similar manner.

Multimeter

Remove the terminal cover of the compressor motor,
setting the resistance measuring range of the multimeter
to "X1Ω" and check the continuity between each pair out
of the 3 terminals as shown in Fig. 5.
Refer to "2-2. Major Component Specifications" for coil
resistance.

,,,,,,,,,,
,,,,,,,,,,
,,,,,,,,,,
,,,,,,,,,,
,,,,,,,,,,
,,,,,,,,,,
,,,,,,,,,,
,,,,,,,,,,
,,,,,,,,,,
,,,,,,,,,,
Compressor motor
coil terminal

Fig. 5

8-6. Checking Thermistor
(Only for heat pump model)

Unplug the 2P connector connected to PCB Ass´y and
measure the resistance of the thermistor with a
multimeter, which is set in the X1 kΩ range.
If the thermistor is normal, the multimeter should read
approximately 15kΩ at 32˚F.

36

9. DISASSEMBLY PROCEDURE
9-1. Removing Front Grille

Wall sleeve

Front grille

1) Pull the bottom part of the front grille toward you.
(Fig. 1-➀)
2) Lift up and unhook the grille to remove it. (Fig. 1-➁)

➁

➀

Fig. 1

9-2. Removing Wall Sleeve

Wall sleeve

(1) While supporting the bottom part of the unit, pull it
out of the wall sleeve. (Fig. 2)

Unit

Fig. 2

9-3. Removing Electrical Component
Box

Knob

(1) Remove knobs and the control panel from the
electrical component box.(Fig. 3)

Control
panel

Electrical compornent box

Fig. 3

(2) Remove the screws holding the lid of the electrical
component box, and also remove the wire clamp
holding the lead wires. (Fig. 4)

Lid
Wire clamp

37

Fig. 4

➀
(3) Remove the following screws. (Fig. 5)
➀ 2 screws holding the component box
➁ 2 screws holding the ventilator knob
➂ 1 screw holding the power supply cord

➁
➂
Fig. 5
(4) Disconnect the wiring connectors and lead wires
connecting the following electrical parts in the
electrical component box.(Fig. 6)
• Compressor motor capacitor
• Fan motor capacitor

Compressor motor
capacitor

Fan motor capacitor

Fig. 6

9-4. Removing Electric Heater

Top cover plate

(1) Remove the 6 screws holding the top cover plate.
(Fig. 7)

Fig. 7
(2) Remove the 5 screws holding the blade Ass´y.
(Fig. 8)

Blade Ass´y

38

Fig. 8

(3) Lift the electrical heater up out of the unit. (Fig. 9)

(4) Remove the 4 screws holding the electric heater
and take off the evaporator’s casing plate. (Fig. 10)

Electric
heater

Fig. 9

Fig. 10

9-5. Removing Blower Wheel
Blower wheel

(1) Remove the electric heater.
Refer to “9-4. Removing Electric Heater.”
(2) Loosen the bolt holding the blower wheel on the
motor shaft. (Fig. 11)

Fig. 11
(3) Remove the blower wheel from the unit. (Fig. 12)

Blower wheel

Fig. 12

9-6. Removing Evaporator
(1) Remove the top cover plate and blade Ass´y.
Refer to “9-4. 1) and 2) Removing Electric Heater.”
(2) Remove the screws holding the evaporator.
(Fig. 13)

Fig. 13
39

Condenser casing

9-7. Removing Condenser
(1) Remove the screws holding the condenser casing.
(Fig. 14)

Fig. 14
(2) Remove the screws holding the condenser.
(Fig. 15)
(3) Hold the lower part of the condenser with both
hands and tilt slightly, then lift up carefully to avoid
distorting the copper tube.

Condenser

Fig. 15

9-8. Removing Propeller Fan
(1) Remove the condenser.
Refer to “9-7. Removing Condenser.”
(2) Loosen the bolt holding the propeller fan on the
motor shaft. (Fig. 16)

Fig. 16
Condenser

Propeller fan

(3) Remove the propeller fan from the motor shaft.
(Fig. 17)

Fig. 17
40

9-9. Removing Fan Motor
(1) Remove the condenser.
Refer to “9-7. Removing Condenser.”
(2) Remove the propeller fan.
Refer to “9-8. Removing Propeller Fan.”
(3) Remove the 3 screws of the fan motor mounting
plate. (Fig. 18)

Fan motor

41

Fig. 18

10. FUNCTION
10-1. Room Temperature Control
Room temperature control is obtained by cycling the compressor ON and OFF.
Cooling Only Model
Models STB0810C1 STB1010C1 STB1020C1 STB1220C1

■ Cooling
● Thermo. ON : When the room temperature rises above T + 4°F (T°F is set temperature).
Compressor ➞ ON
● Thermo. OFF : When the room temperature falls below set temperature T°F.
Compressor ➞ OFF
Room temp.
T+4 °F
set temp.

T °F

Compressor

Fan motor

ON

ON

OFF

Set speed

42

OFF

Cooling & Electric Heating Model
Models STB0811C1 STB1023C1 STB1123C1

■ Cooling
● Thermo. ON : When the room temperature rises above T + 4°F (T°F is set temperature).
Compressor ➞ ON
● Thermo. OFF : When the room temperature falls below set temperature T°F.
Compressor ➞ OFF
Room temp.
T+4 °F
T °F

set temp.

Compressor

ON

ON

OFF

OFF

Set speed

Fan motor

■ Heating
● Heater ON :

When the room temperature falls below T – 4°F (T°F is set temperature).
Heater ➞ ON

● Heater OFF : When the room temperature rises above set temperature T°F.
Heater ➞ OFF
Room temp.

set temp.

T °F
T–4 °F

Heater
Fan motor

ON

OFF

ON

OFF

Set speed

43

Heat Pump Model
Model
STB0823H1

■ Cooling
● Once the compressor stops, it will not start running again for about 3 minutes.
● Thermo. ON : When the room temperature rises above T + 1°F (T°F is set temperature).
Compressor ➞ ON
● Thermo. OFF : When the room temperature falls below set temperature T°F.
Compressor ➞ OFF
Room temp.

set temp.

T+1°F
T °F
3 minutes
or more

Compressor

ON

OFF

3 minutes
ON

ON

OFF

■ Heating (Except during defrosting operation)
● Once the compressor stops, it will not start running again for about 3 minutes.
● Thermo. ON : When the room temperature falls below T°F (T°F is set temperature).
Compressor ➞ ON
● Thermo. OFF : When the room temperature rises above T + 1°F.
Compressor ➞ OFF
● Changeover to Heater ON : When the room temperature falls below T – 4°F, the unit turns off heat pump
operation and electric heater comes on instead of compressor.
● Changeover to Heat pump : When the room temperature rises above T – 3°F, the unit resumes heat pump
operation and compressor comes on instead of electric heater.
Room temp.

set temp.

T+1 °F
T °F
T–3 °F
T–4 °F
3 minutes
or more

Compressor

Heater

OFF

OFF

ON

OFF

ON

3 minutes
ON

OFF

OFF

44

ON

3 minutes
ON

ON

OFF

OFF

ON

OFF

OFF

10-2. Defrosting Operation (Heating)
Heat Pump Model
Model
STB0823H1
■ Defrosting Flowchart
Compressor ON

Temperature of outdoor heat
exchanger coil is blow 14°F.

NO

YES

●
●

Defrosting begins
Compressor
➞ OFF
Electric Heater ➞ ON

Temperature of outdoor heat
exchanger coil is higher than
39°F.

NO

YES
Release of defrosting

■ Defrosting Mode Timing Chart
Start of defrosting

Compressor

Electric heater

Solenoid coil
(4-way valve)
Fan motor

Release of defrosting

ON

OFF

ON

OFF

ON

OFF

ON

ON

Set speed

Outdoor heat 39 °F
exch coil
temp.
14 °F

NOTE

Once the air conditioner enters defrosting mode, it will not release defrosting until the
outdoor heat exchanger coil temperature rises above 39°F. During this period, heat is
provided by electric heater instead of by the heat pump.

45

APPENDIX
Control Panel
■ Cooling Only Model
Models
STB0810C1 STB1010C1 STB1020C1 STB1220C1
THERMOSTAT

SELECTOR
OFF
LOW
FAN

LOW
COOL

HIGH
FAN

HIGH
COOL

Thermostat

Mode
selector
COOLER

■ Cooling & Electric Heating Model
Models STB0811C1 STB1023C1 STB1123C1
THERMOSTAT

SELECTOR
LOW FAN
OFF

LOW
HEAT

HIGH
FAN

LOW
COOL

Thermostat
WARMER

COOLER

HIGH
HEAT

HIGH
COOL

Mode
selector

■ Heat Pump Model
Model
STB0823H1
THERMOSTAT

SELECTOR
LOW
HEAT
HIGH
HEAT

OFF

FAN

LOW
COOL
HIGH
COOL

Thermostat

Mode
selector
WARMER

COOLER

46

Fan Switch
The location of Fan Switch differ according to models.
When set to CYCLE, fan operation synchronizes with that of compressor's (or heater's) thermo ON and
thermo OFF, thereby saving power. When set to CONT, fan continues to operate regardless of thermo
ON or thermo OFF condition.

Fan switch
CYCLE

Fan switch
FAN
CONT

CYCLE

Cooling Only Model

Heat Pump Model

Cooling & Electric Heating Model

47

CONT

May. / 2001 / 850

Printed in Japan

For Parts or Service Contact
SANYO HVAC SERVICE CENTER
SANYO Fisher Service Company
1165 Allgood Road, Suite 22, Marietta, GA 30062 U.S.A.
300 Applewood Crescent, Concord, Ontario, L4K 5C7, CANADA



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