Westinghouse WHS09WMA21S Service manual

AIR CONDITIONER
Wall mounted type
REFRIGERANT R410A
INVERTER
DESIGN & TECHNICAL MANUAL
INDOOR
WHS09WMA21S
WHS09WMA11S
WHS12WMA21S
WHS12WMA11S
WHS18WMA21S
WHS24WMA21S WHS30WMA21S
OUTDOOR
WHS09SZA21S
WHS09SZA11S
WHS12SZA21S
WHS12SZA11S
WHS18SZA21S WHS24SZA21S
WHS30SZA21S
, WESTINGHOUSE, and INNOVATION YOU CAN BE SURE OF are trademarks of Westing house
Electric Corporation. Used under license by FUJITSU GENERAL AMERICA, INC. All Rights Reserved.
DR_AS126EW_01
2020.05.29

Notices:
• Product specifications and design are subject to change without notice for future improvement.
• For further details, please check with our authorized dealer.
WARNING
This product can expose you to chemicals including Plumbum, which is known to the State of California
to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov.

CONTENTS
Part 1. INDOOR UNIT...........................................................................1
1. Specifications................................................................................................2
2. Dimensions....................................................................................................5
2-1. Models: WHS09WMA21S and WHS09WMA11S ............................................................5
2-2. Models: WHS12WMA21S and WHS12WMA11S ............................................................5
2-3. Model: WHS18WMA21S..................................................................................................6
2-4. Model: WHS24WMA21S..................................................................................................6
2-5. Model: WHS30WMA21S..................................................................................................7
2-6. Installation space requirement .........................................................................................7
3. Wiring diagrams ............................................................................................8
3-1. Models: WHS09WMA21S, WHS12WMA21S, and WHS18WMA21S ..............................8
3-2. Model: WHS24WMA21S..................................................................................................9
3-3. Model: WHS30WMA21S................................................................................................10
3-4. Models: WHS09WMA11S and WHS12WMA11S ..........................................................11
4. Capacity table..............................................................................................12
4-1. Cooling capacity.............................................................................................................12
4-2. Heating capacity ............................................................................................................15
5. Remote controller .......................................................................................17
5-1. Wireless remote controller .............................................................................................17
5-2. Wired remote controller..................................................................................................18
6. Accessories .................................................................................................19

Part 2. OUTDOOR UNIT.....................................................................21
1. Specifications..............................................................................................22
2. Dimensions..................................................................................................25
2-1. Models: WHS09SZA21S, WHS12SZA21S, WHS09SZA11S, and WHS12SZA11S......25
2-2. Model: WHS18SZA21S .................................................................................................26
2-3. Model: WHS24SZA21S .................................................................................................27
2-4. Model: WHS30SZA21S .................................................................................................28
3. Installation space ........................................................................................29
3-1. Models: WHS09SZA21S, WHS12SZA21S, WHS18SZA21S, WHS24SZA21S,
WHS30SZA21S, WHS09SZA11S, and WHS12SZA11S .................................................29
4. Refrigerant circuit .......................................................................................31
4-1. Models: WHS09SZA21S, WHS12SZA21S, WHS18SZA21S, WHS24SZA21S,
WHS30SZA21S, WHS09SZA11S, and WHS12SZA11S .................................................31
5. Wiring diagrams ..........................................................................................32
5-1. Models: WHS09SZA21S, WHS12SZA21S, WHS18SZA21S, WHS24SZA21S, and
WHS30SZA21S................................................................................................................32
5-2. Models: WHS09SZA11S and WHS12SZA11S ..............................................................33
6. Electrical characteristics............................................................................34
7. Accessories .................................................................................................35
CONTENTS (continued)

Part 1. INDOOR UNIT
WALL MOUNTED TYPE:
WHS09WMA21S
WHS12WMA21S
WHS18WMA21S
WHS24WMA21S
WHS30WMA21S
WHS09WMA11S
WHS12WMA11S

1. Specifications
Type
Wall mounted
Inverter heat pump
Model name WHS09WMA21S WHS12WMA21S WHS18WMA21S
Power supply 208/230 V ~ 60 Hz
Power supply intake Outdoor unit
Available voltage range 198—253 V
Capacity
Cooling
Rated kW 2.64 3.52 5.28
Btu/h 9,000 12,000 18,000
Min.—Max. kW 1.32—2.93 1.61—3.96 1.90—5.72
Btu/h 4,500—10,000 5,500—13,500 6,500—19,500
Heating
Rated kW 2.93 3.81 5.86
Btu/h 10,000 13,000 20,000
Min.—Max. kW 1.32—2.93 1.61—3.96 1.76—6.30
Btu/h 4,500—10,000 5,500—13,500 6,000—21,500
Input power
Cooling Rated
kW
0.86 1.12 1.65
Min.—Max. 0.299—1.610 0.345—1.725 0.414—2.760
Heating Rated 0.86 1.12 2.00
Min.—Max. 0.299—1.610 0.345—1.725 0.414—2.760
Current Cooling Rated A 3.8 5.0 7.4
Heating 4.0 5.0 9.0
EER Cooling W/W 3.08 3.14 3.20
Btu/hW 10.50 10.70 10.90
COP Heating W/W 3.41 3.40 2.93
Btu/hW 11.63 11.60 10.00
SEER Cooling Btu/hW 16.3 16.7 17.6
HSPF Heating Btu/hW 9.1 9.0 10.1
Power factor Cooling %98 97
Heating 98 97
Moisture removal pints/h (L/h) 1.9 (0.9) 2.5 (1.2) 4.2 (2.0)
Maximum operating current*1Cooling A7.0 7.5 12.0
Heating 7.0 7.5 12.0
Fan
Airflow rate
Cooling
HIGHER
CFM (m3/h)
400 (680) 412 (700) 592 (1,005)
HIGH 341 (580) 380 (645) 530 (901)
MED 283 (480) 351 (596) 441 (750)
LOW 224 (380) 276 (469) 388 (660)
LOWER 207 (352) 250 (424) 341 (580)
Heating
HIGHER 400 (680) 412 (700) 592 (1,005)
HIGH 341 (580) 380 (645) 530 (901)
MED 283 (480) 351 (596) 441 (750)
LOW 224 (380) 276 (469) 388 (660)
LOWER 207 (352) 250 (424) 341 (580)
Type × Q'ty Crossflow fan × 1
Motor output W 14 35
Sound pressure level*2
Cooling
HIGHER
dB (A)
39 40 45
HIGH 36 43
MED 33 40
LOW 29 30 38
LOWER 26 35
Heating
HIGHER 39 40 45
HIGH 36 43
MED 33 40
LOW 29 30 38
LOWER 26 35
Heat exchanger type
Dimensions (H × W × D) in (mm) 11-9/16 × 23-1/4 × 1-1/16
(294 × 550 × 27.2)
11-9/16 × 24-7/16 × 1-1/16
(294 × 620 × 27.2)
14-7/8 × 27-3/4 × 1-1/16
(378 × 705 × 27.2)
Fin pitch FPI 18
Rows × Stages 2 × 14 2 × 18
Pipe type Copper
Fin type Aluminum
Enclosure Material Polystyrene
Color White
Dimensions
(H × W × D)
Net
in (mm)
10-5/8 × 29-5/16 × 8-7/16
(270 × 745 × 214)
10-5/8 × 32-1/16 × 8-7/16
(270 × 815 × 214)
12-3/8 × 36 × 9-5/16
(315 × 915 × 236)
Gross 13-3/16 × 31-1/2 × 10-7/16
(335 × 800 × 265)
13-3/16 × 34-1/1 × 10-7/16
(335 × 870 × 265)
15-3/8 × 39-3/8 × 12-3/8
(390 × 1,000 × 315)
Weight Net lb (kg) 19 (8.5) 20 (9) 28 (12.5)
Gross 22 (10) 24 (11) 32 (14.5)
Connection pipe Size Liquid in (mm) Ø 1/4 (Ø 6.35) Gas Ø 3/8 (Ø 9.52) Ø 1/2 (Ø 12.7)
Method Flare
Drain hose Material PE/PVC
Tip diameter in (mm) Ø5/8 (Ø 15.4) (I.D.), Ø7/8 (Ø 23) (O.D.)
Operation range Cooling °F (°C) 61 to 86 (16 to 30) %RH 80 or less
Heating °F (°C) 61 to 86 (16 to 30)
Remote controller type Wireless (Wired [option])
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 80 °FDB (26.67 °CDB) /67 °FWB (19.44 °CWB), and outdoor temperature of 95 °FDB (35 °CDB) / 75 °FWB (23.9 °CWB).
– Heating: Indoor temperature of 70 °FDB (21.11 °CDB) /59 °FWB (15.56 °CWB), and outdoor temperature of 47 °FDB (8.33 °CDB) /43 °FWB (6.11 °CWB).
– Pipe length: 25 ft (7.5 m), Height difference: 0 ft (0 m). (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *1: Maximum current is maximum value when operated within the operation range.
• *2: Sound pressure level:
– Measured values in manufacturer’s anechoic chamber.
– Because of the surrounding sound environment, the sound levels measured in actual installation conditions might be higher than the specified values here.
- 2 - 1. Specifications
WALL MOUNTED WHS09-30WMA WALL MOUNTED WHS09-30WMA

Type
Wall mounted
Inverter heat pump
Model name WHS24WMA21S WHS30WMA21S
Power supply 208/230 V ~ 60 Hz
Power supply intake Outdoor unit
Available voltage range 198—253 V
Capacity
Cooling
Rated kW 7.03 8.79
Btu/h 24,000 30,000
Min.—Max. kW 2.34—7.77 3.37—9.81
Btu/h 8,000—26,500 11,500—33,500
Heating
Rated kW 7.15 9.09
Btu/h 24,400 31,000
Min.—Max. kW 2.34—7.77 3.37—9.81
Btu/h 8,000—26,500 11,500—33,500
Input power
Cooling Rated
kW
2.29 2.90
Min.—Max. 0.460—2.990 0.529—3.450
Heating Rated 2.27 2.70
Min.—Max. 0.460—2.990 0.529—3.450
Current Cooling Rated A 10.5 12.8
Heating 10.4 12.0
EER Cooling W/W 3.08 3.03
Btu/hW 10.50 10.34
COP Heating W/W 3.15 3.37
Btu/hW 10.74 11.48
SEER Cooling Btu/hW 17.6 18.8
HSPF Heating Btu/hW 9.8 12.3
Power factor Cooling %95 98
Heating 95 98
Moisture removal pints/h (L/h) 5.1 (2.4) 6.3 (3.0)
Maximum operating current*1Cooling A13.0 15.0
Heating 13.0 15.0
Fan
Airflow rate
Cooling
HIGHER
CFM (m3/h)
636 (1,080) 1,107 (1,880)
HIGH 577 (980) 845 (1,435)
MED 483 (820) 706 (1,200)
LOW 447 (760) 589 (1,000)
LOWER 383 (650) 500 (850)
Heating
HIGHER 636 (1,080) 1,107 (1,880)
HIGH 577 (980) 845 (1,435)
MED 483 (820) 706 (1,200)
LOW 447 (760) 589 (1,000)
LOWER 383 (650) 500 (850)
Type × Q'ty Crossflow fan × 1
Motor output W 35 70
Sound pressure level*2
Cooling
HIGHER
dB (A)
48 50
HIGH 45 45
MED 40 43
LOW 38 40
LOWER 36 38
Heating
HIGHER 48 50
HIGH 45 45
MED 40 43
LOW 38 40
LOWER 36 38
Heat exchanger type
Dimensions (H × W × D) in (mm) 14-7/8 × 33-1/8 × 1-1/16
(378 × 842 × 27.2)
16-9/16 × 38-3/4 × 1-1/16
(420 × 985 × 27.2)
Fin pitch FPI 18
Rows × Stages 2 × 18 2 × 22
Pipe type Copper
Fin type Aluminum
Enclosure Material Polystyrene
Color White
Dimensions
(H × W × D)
Net
in (mm)
12-3/8 × 42-11/16 × 9-5/16
(315 × 1,085 × 236)
14-3/16 × 50-3/8 × 10-1/4
(360 × 1,280 × 260)
Gross 15-3/8 × 46-1/16 × 12-3/8
(390 × 1,170 × 315)
17-1/8 × 54-1/2 × 12-13/16
(435 × 1,385 × 325)
Weight Net lb (kg) 31 (14) 40 (18)
Gross 37 (17) 47 (21.5)
Connection pipe Size Liquid in (mm) Ø 3/8 (Ø 9.52) Gas Ø 5/8 (Ø 15.88)
Method Flare
Drain hose Material PE/PVC
Tip diameter in (mm) Ø5/8 (Ø 15.4) (I.D.), Ø7/8 (Ø 23) (O.D.)
Operation range Cooling °F (°C) 61 to 86 (16 to 30) %RH 80 or less
Heating °F (°C) 61 to 86 (16 to 30)
Remote controller type Wireless (Wired [option])
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 80 °FDB (26.67 °CDB) /67 °FWB (19.44 °CWB), and outdoor temperature of 95 °FDB (35 °CDB) / 75 °FWB (23.9 °CWB).
– Heating: Indoor temperature of 70 °FDB (21.11 °CDB) /59 °FWB (15.56 °CWB), and outdoor temperature of 47 °FDB (8.33 °CDB) /43 °FWB (6.11 °CWB).
– Pipe length: 25 ft (7.5 m), Height difference: 0 ft (0 m). (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *1: Maximum current is maximum value when operated within the operation range.
• *2: Sound pressure level:
– Measured values in manufacturer’s anechoic chamber.
– Because of the surrounding sound environment, the sound levels measured in actual installation conditions might be higher than the specified values here.
- 3 - 1. Specifications
WALL MOUNTED WHS09-30WMA WALL MOUNTED WHS09-30WMA

Type
Wall mounted
Inverter heat pump
Model name WHS09WMA11S WHS12WMA11S
Power supply 115 V ~ 60 Hz
Power supply intake Outdoor unit
Available voltage range 103—127 V
Capacity
Cooling
Rated kW 2.64 3.52
Btu/h 9,000 12,000
Min.—Max. kW 0.35—2.93 0.73—3.96
Btu/h 1,200—10,000 2,500—13,500
Heating
Rated kW 2.93 3.87
Btu/h 10,000 13,200
Min.—Max. kW 0.35—2.93 0.73—4.25
Btu/h 1,200—10,000 2,500—14,500
Input power
Cooling Rated
kW
0.82 1.20
Min.—Max. 0.230—1.380 0.287—1.725
Heating Rated 0.84 1.18
Min.—Max. 0.230—1.380 0.287—1.725
Current Cooling Rated A 7.4 10.8
Heating 7.4 10.6
EER Cooling W/W 3.22 2.93
Btu/hW 11.00 10.00
COP Heating W/W 3.50 3.28
Btu/hW 11.95 11.20
SEER Cooling Btu/hW 19.3 17.9
HSPF Heating Btu/hW 10.5 9.4
Power factor Cooling %96 97
Heating 98 97
Moisture removal pints/h (L/h) 1.9 (0.9) 2.5 (1.2)
Maximum operating current*2Cooling A12.0 15.0
Heating 12.0 15.0
Fan
Airflow rate
Cooling
HIGHER
CFM (m3/h)
400 (680) 412 (700)
HIGH 341 (580) 380 (645)
MED 283 (480) 351 (596)
LOW 224 (380) 276 (469)
LOWER 207 (352) 250 (424)
Heating
HIGHER 400 (680) 412 (700)
HIGH 341 (580) 380 (645)
MED 283 (480) 351 (596)
LOW 224 (380) 276 (469)
LOWER 208 (354) 250 (424)
Type × Q'ty Crossflow fan × 1
Motor output W 39
Sound pressure level*3
Cooling
HIGHER
dB (A)
39 40
HIGH 36
MED 33
LOW 30
LOWER 26
Heating
HIGHER 39 40
HIGH 36
MED 33
LOW 30
LOWER 26
Heat exchanger type
Dimensions (H × W × D) in (mm) 11-9/16 × 23-1/4 × 1-1/16
(294 × 550 × 27.2)
11-9/16 × 24-7/16 × 1-1/16
(294 × 620 × 27.2)
Fin pitch FPI 18
Rows × Stages 2 × 14
Pipe type Copper
Fin type Aluminum
Enclosure Material Polystyrene
Color White
Dimensions
(H × W × D)
Net
in (mm)
10-5/8 × 29-5/16 × 8-7/16
(270 × 745 × 214)
10-5/8 × 32-1/16 × 8-7/16
(270 × 815 × 214)
Gross 13-3/16 × 31-1/2 × 10-7/16
(335 × 800 × 265)
13-3/16 × 34-1/1 × 10-7/16
(335 × 870 × 265)
Weight Net lb (kg) 19 (8.5) 20 (9)
Gross 22 (10) 24 (11)
Connection pipe Size Liquid in (mm) Ø 1/4 (Ø 6.35) Gas Ø 3/8 (Ø 9.52)
Method Flare
Drain hose Material PE/PVC
Tip diameter in (mm) Ø5/8 (Ø 15.4) (I.D.), Ø7/8 (Ø 23) (O.D.)
Operation range Cooling °F (°C) 61 to 86 (16 to 30) %RH 80 or less
Heating °F (°C) 61 to 86 (16 to 30)
Remote controller type Wireless (Wired [option])
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 80 °FDB (26.67 °CDB) /67 °FWB (19.44 °CWB), and outdoor temperature of 95 °FDB (35 °CDB) / 75 °FWB (23.9 °CWB).
– Heating: Indoor temperature of 70 °FDB (21.11 °CDB) /59 °FWB (15.56 °CWB), and outdoor temperature of 47 °FDB (8.33 °CDB) /43 °FWB (6.11 °CWB).
– Pipe length: 25 ft (7.5 m), Height difference: 0 ft (0 m). (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *1: Maximum current is maximum value when operated within the operation range.
• *2: Sound pressure level:
– Measured values in manufacturer’s anechoic chamber.
– Because of the surrounding sound environment, the sound levels measured in actual installation conditions might be higher than the specified values here.
- 4 - 1. Specifications
WALL MOUNTED WHS09-30WMA WALL MOUNTED WHS09-30WMA

2. Dimensions
2-1. Models: WHS09WMA21S and WHS09WMA11S
Unit: in (mm)
29-5/16 (745) 8-7/16 (214)
9 (228.4)
1-13/16 (46.5)
11-16 (17) 1-9/16 (39)
10-5/8 (270)
25-13/16 (656)
7-3/16
(183.2)
Air inlet
Drain port:
Ø11/16 (18)
2-2. Models: WHS12WMA21S and WHS12WMA11S
Unit: in (mm)
32-1/16 (815)
3-5/8
(91.9)
7-3/16 (183.2)
28-7/16 (722) 1-13/16
(46.5)
10-5/8 (270)
8-7/16 (214)
1-5/8 (42)
9/16 (15)
2 (51.3)
Drain port:
Ø11/16 (17.6)
Tube exit
Air inlet
- 5 -
2-1. Models: WHS09WMA21S and WHS09WMA11S 2. Dimensions
WALL MOUNTED WHS09-30WMA WALL MOUNTED WHS09-30WMA

2-3. Model: WHS18WMA21S
Unit: in (mm)
35-11/16 (907)
36 (915)
4 (102)
9-5/16 (236)
12-3/8 (315)
10-5/16 (262)
12-1/8 (307.2)
5/8 (16) 2-1/16 (53)
1-7/8 (47)
Drain port:
Ø11/16 (18)
Tube exit
Air inlet
31-9/16 (801) 2-3/16
(56)
2-4. Model: WHS24WMA21S
Unit: in (mm)
42-11/16 (1,085)
3-15/16 (100.5)
12-3/8 (315)
2-1/4 (57.6)9/16 (14)
1-7/8 (47.5)
38-3/16 (970)
Tube exit 2-1/4
(57)
Drain port:
Ø11/16 (18)
9-5/16 (236)
- 6 -
2-3. Model: WHS18WMA21S 2. Dimensions
WALL MOUNTED WHS09-30WMA WALL MOUNTED WHS09-30WMA