Westinghouse WHP09WMA21S User manual

AIR CONDITIONER
Wall mounted type
REFRIGERANT
R410A
INVERTER
INDOOR
WHP09WMA21S
WHP12WMA21S
WHP18WMA21S
WHP24WMA21S
OUTDOOR
WHP09SZA21S WHP12SZA21S WHP18SZA21S
WHP24SZA21S
, 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.
2020.06.30
SERVICE MANUAL

Please Read Before Starting
This air conditioning system 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.
For safe installation and trouble-free operation, you must:
●
Carefully read this instruction booklet before beginning.
●
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.
This symbol refers to a hazard or unsafe practice which can result in severe
personal injury or death.
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.
In Case of Improper Installation
The manufacturer shall in no way be responsible for improper installation or maintenance service,
including failure to follow the instructions in this document.
SPECIAL PRECAUTIONS
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.
●
Do not supply power to the unit until all wiring and tubing are completed or reconnected and
checked.
●
Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram
and these instructions when wiring. Improper connections and inadequate grounding can cause
accidental injury or death.
●
Ground the unit following local electrical codes.
●
Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible
fire hazard.
When Transporting
Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend
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Notices:
• Product specifications and design are subject to change without notice for future improvement.
• For further details, please check with our authorized dealer.

your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air
conditioner can cut your fingers.
When Installing
●
In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the unit’s weight. It may be necessary to
construct a strong
wood or metal frame to provide added support.
●
In a Room
Properly insulate any tubing run inside a room to prevent
“
sweating” that can cause dripping and
water damage to walls and floors.
●
In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the outdoor unit.
This prevents water damage and abnormal vibration.
●
In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.
●
In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.
When Connecting Refrigerant Tubing
△
Use the flare method for connecting tubing.
△
Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting
them, then tighten the nut with a torque wrench for a leak free connection.
△
Check carefullyfor leaks before starting the test run.
When Servicing
△
Turn the power OFF at the main power box (mains) before opening the unit to check or repair
electrical parts and wiring.
△
Keep your fingers and clothing away from any moving parts.
△
Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have
been left inside the unit being serviced.
Others
△
Ventilate any enclosed areas when installing or testing the refrigeration system. Escaped
refrigerant gas, on contact withfire 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.
NOTE:
The figure, size and parameter of the product may not be identical with the service manual, please
take the actual product as the standard.
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Specifications
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Type
Wall mounted
Inverter heat pump
Model name WHP09WMA21S WHP12WMA21S
Power supply 208/230 V ~ 60 Hz
Power supply intake Outdoor unit
Available voltage range 198—253 V
Capacity
Cooling
Rated kW 2.64 3.51
Btu/h 9,000 12,000
Min.—Max. kW 1.06—2.93 1.17—3.96
Btu/h 3,600—10,000 4,000—13,500
Heating
Rated kW 2.78 3.81
Btu/h 9,500 13,000
Min.—Max. kW 1.05—3.07 1.17—4.10
Btu/h 3,600—10,500 4,000—14,000
Input power
Cooling Rated
kW
0.655 0.920
Min.—Max. 0.230—1.495 0.276—1.610
Heating Rated 0.720 1.110
Min.—Max. 0.230—1.495 0.276—1.610
Current Cooling Rated A 2.9 4.3
Heating 2.9 5.0
EER Cooling W/W 4.03 3.82
Btu/hW 13.74 13.04
COP Heating W/W 3.87 3.43
Btu/hW 13.19 11.71
SEER Cooling Btu/hW 22.5 22.0
HSPF Heating Btu/hW 10.7 10.5
Power factor Cooling %98 96
Heating 98 97
Moisture removal pints/h (L/h) 1.9 (0.9) 2.5 (1.2)
Maximum operating current*1Cooling A6.5 7.0
Heating 6.5 7.0
Fan
Airflow rate
Cooling
HIGHER
CFM (m3/h)
383 (650) 394 (670)
HIGH 341 (580) 365 (620)
MED 294 (500) 312 (530)
LOW 247 (420) 253 (430)
LOWER 224 (380)
Heating
HIGHER 383 (650) 394 (670)
HIGH 341 (580) 365 (620)
MED 294 (500) 312 (530)
LOW 247 (420) 253 (430)
LOWER 224 (380)
Type × Q'ty Crossflow fan × 1
Motor output W 25
Sound pressure level*2
Cooling
HIGHER
dB (A)
42
HIGH 39
MED 32
LOW 29
LOWER 26
Heating
HIGHER 42
HIGH 39
MED 32
LOW 29
LOWER 26
Heat exchanger type
Dimensions (H × W × D) in (mm) 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 × 33-7/16 × 8-7/16
(270 × 850 × 215)
Gross 13-3/16 × 37 × 10-7/16
(335 × 940 × 265)
Weight Net lb (kg) 20 (9)
Gross 24 (11) 26 (12)
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.

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Type
Wall mounted
Inverter heat pump
Model name WHP18WMA21S WHP24WMA21S
Power supply 208/230 V ~ 60 Hz
Power supply intake Outdoor unit
Available voltage range 198—253 V
Capacity
Cooling
Rated kW 5.28 6.86
Btu/h 18,000 23,400
Min.—Max. kW 1.905—5.7153 2.345—7.767
Btu/h 6,500—19,500 8,000—26,500
Heating
Rated kW 5.57 7.62
Btu/h 19,000 26,000
Min.—Max. kW 1.905—5.862 2.345—7.767
Btu/h 6,500—20,000 8,000—26,500
Input power
Cooling Rated
kW
1.385 1.870
Min.—Max. 0.345—2.760 0.414—2.990
Heating Rated 1.638 2.500
Min.—Max. 0.345—2.760 0.414—2.990
Current Cooling Rated A 6.3 8.3
Heating 7.2 11.1
EER Cooling W/W 3.81 3.67
Btu/hW 13.00 12.51
COP Heating W/W 3.40 3.05
Btu/hW 11.60 10.40
SEER Cooling Btu/hW 23.3 21.0
HSPF Heating Btu/hW 11.6 10.5
Power factor Cooling %96 98
Heating 99 98
Moisture removal pints/h (L/h) 3.2 (1.5) 5.1 (2.4)
Maximum operating current*2Cooling A12.0 13.0
Heating 12.0 13.0
Fan
Airflow rate
Cooling
HIGHER
CFM (m3/h)
647 (1,100) 706 (1,200)
HIGH 589 (1,000) 647 (1,100)
MED 483 (820) 559 (950)
LOW 459 (780) 441 (750)
LOWER 383 (650) 368 (625)
Heating
HIGHER 647 (1,100) 706 (1,200)
HIGH 589 (1,000) 647 (1,100)
MED 483 (820) 559 (950)
LOW 459 (780) 441 (750)
LOWER 383 (650) 368 (625)
Type × Q'ty Crossflow fan × 1
Motor output W 35
Sound pressure level*3
Cooling
HIGHER
dB (A)
48 50
HIGH 45 47
MED 41 42
LOW 37 36
LOWER 34 33
Heating
HIGHER 48 50
HIGH 45 47
MED 41 42
LOW 37 36
LOWER 34 33
Heat exchanger type
Dimensions (H × W × D) in (mm) 14-7/8 × 33-1/8 × 1-1/16
(378 × 842 × 27.2)
Fin pitch FPI 18
Rows × Stages 2 × 18
Pipe type Copper
Fin type Aluminum
Enclosure Material Polystyrene
Color White
Dimensions
(H × W × D)
Net
in (mm)
12-3/8 × 44-1/2 × 9-5/16
(315 × 1,130 × 237)
Gross 15-3/8 × 47-5/8 × 12-7/16
(390 × 1,210 × 316)
Weight Net lb (kg) 32 (14.5)
Gross 37 (17)
Connection pipe Size Liquid in (mm) Ø 1/4 (Ø 6.35) Ø 3/8 (Ø 9.52)
Gas Ø 1/2 (Ø 12.70) 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.

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Type Inverter heat pump
Model name WHP09SZA21S WHP12SZA21S
Power supply 208/230 V ~ 60 Hz
Available voltage range 198—253 V
Fan
Airflow rate CFM (m3/h) 971 (1,650) 1,177 (2,000)
Type × Q'ty Propeller fan × 1
Motor output W 30
Sound pressure level *1dB (A) 53
Heat exchanger type
Dimensions
(H × W × D) in (mm)
26-7/8 × 18-3/16 × 11/16
(683 × 462 × 18.2)
25-3/4 × 18-3/16 × 11/16
(654 × 462 × 18.2)
33-1/16 × 21-1/2 × 11/16
(840 × 546 × 18.19)
33-1/16 × 21-1/2 × 11/16
(840 × 546 × 18.19)
Fin pitch FPI 18
Rows × Stages 2 × 22 2 × 26
Pipe type Copper
Fin type Type (Material) Aluminum
Surface treatment Blue fin
Compressor Type Rotary
Refrigerant
Type R410A
Charge lb oz 2 lb 2 oz 2 lb 9 oz
g 950 1,160
Refrigerant oil Type 68HES-H VG74 (POE)
Enclosure Material Steel sheet
Color White
Dimensions
(H × W × D)
Net
in (mm)
19 × 28-1/8 × 9-7/16
(482 × 715 × 240)
23-1/16 × 31-7/8 × 11
(585 × 810 × 280)
Gross 20-7/8 × 33-11/16 × 13-3/8
(530 × 830 × 340)
25-3/16 × 37 × 15-3/16
(640 × 940 × 385)
Weight Net lb (kg) 60 (27) 73 (33)
Gross 65 (29.5) 79 (36)
Connection pipe
Size Liquid in (mm) Ø 1/4 (Ø 6.35)
Gas Ø 3/8 (Ø 9.52)
Method Flare
Pre-charge length
ft (m)
24 (7.5)
Max. length 65 (20)
Max. height difference Indoor unit higher than outdoor unit: 32 (10)
Outdoor unit higher than indoor unit: 16 (5)
Operation range Cooling °F (°C) 5 to 115 (-15 to 46)
Heating -4 to 75 (-20 to 24)
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 °CWB), and outdoor temperature of 47 °FDB (8.33 °CDB) / 43 °FWB (6.11 °CWB).
– Pipe length: 24 ft 6 in (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: 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.

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Type Inverter heat pump
Model name WHP18SZA21S WHP24SZA21S
Power supply 208/230 V ~ 60 Hz
Available voltage range 198—253 V
Fan
Airflow rate CFM (m3/h) 1,648
(2,800)
2,354
(4,000)
Type × Q'ty Propeller fan × 1
Motor output W 60 70
Sound pressure level *1dB (A) 55 58
Heat exchanger type
Dimensions
(H × W × D) in (mm)
35-1/4 × 24-13/16 × 11/16
(895 × 630 × 18.19)
34-1/8 × 24-13/16 × 11/16
(867 × 630 × 18.19)
35-1/4 × 24-13/16 × 11/16
(895 × 630 × 18.19)
34-1/8 × 24-13/16 × 11/16
(867 × 630 × 18.19)
19-11/16 × 24-13/16 × 11/16
(500 × 630 × 18.19)
Fin pitch FPI 18
Rows × Stages 2 × 30 3 × 30
Pipe type Copper
Fin type Type (Material) Aluminum
Surface treatment Blue fin
Compressor Type Rotary
Refrigerant
Type R410A
Charge lb oz 3 lb 7 oz 4 lb 12 oz
g 1,550 2,150
Refrigerant oil Type VG74 (POE)
Enclosure Material Steel sheet
Color White
Dimensions
(H × W × D)
Net
in (mm)
25-9/16 × 33-7/8 × 12-3/16
(650 × 860 × 310)
31-5/16 × 34-13/16 × 14-7/16
(795 × 885 × 366)
Gross 28-3/8 × 39-3/16 × 16-9/16
(720 × 995 × 420)
35-1/16 × 41-5/16 × 19-11/16
(890 × 1,050 × 500)
Weight Net lb (kg) 99 (45) 134 (61)
Gross 108 (49) 144 (65.5)
Connection pipe
Size Liquid in (mm) Ø 1/4 (Ø 6.35) Ø 3/8 (Ø 9.52)
Gas Ø 1/2 (Ø 12.7) Ø 5/8 (Ø 15.88)
Method Flare
Pre-charge length
ft (m)
24 (7.5)
Max. length 65 (20)
Max. height difference Indoor unit higher than outdoor unit: 32 (10)
Outdoor unit higher than indoor unit: 16 (5)
Operation range Cooling °F (°C) 5 to 115 (-15 to 46)
Heating -4 to 75 (-20 to 24)
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 °CWB), and outdoor temperature of 47 °FDB (8.33 °CDB) / 43 °FWB (6.11 °CWB).
– Pipe length: 24 ft 6 in (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: 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.

Dimensions
Models: WHP09WMA21S and WHP12WMA21S
Unit: in (mm)
3-5/8 (92)
33-7/16 (850)
Air inlet
28-7/16 (723) 2-9/16
(63.5)
Drain port:
Ø11/16 (18)
7-3/16
(183.2)
Tube exit
8-7/16 (215)
10-5/8 (270)
11-16 (17) 1-11/16 (43)
8-15/16 (227)
1-13/16
(46.5)
Models: WHP18WMA21S and WHP24WMA21S
Unit: in (mm)
Drain port:
Ø11/16 (18)
Tube exit
Air inlet
38-3/16 (970) 2-1/8
(80)
44-1/2 (1,130)
42-11/16 (1,084)
4 (102)
12-3/8 (315)
9-5/16 (237)
5/8 (16) 2-1/16 (53)
1-7/8 (47)
10-5/16 (262)
12-1/8 (307.2)
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Installation space requirement
Unit: in (mm)
- 8 -
Provide sufficient installation space for product safety.

Model: WHP09SZA21S
Unit: in (mm)
7/16 (11)
5/8 (16)
)551(8/1-6
3-7/16
(87)
4-3/4
(120)
30°
30°
19 (482)
9-5/16 8237)
1/8 (3)
5-7/16
(138) 9-7/8
(251) 28-1/8 (715)
17-7/16
(443) 2-7/8
(73)
8-7/8 (226)
3/16 × 3/8 × 13/16
(4 × 10 × 20)
11-7/16 (290)
9-7/16 (240)
1-3/16 (30)
1-7/8 (47)
1/2 (13)
10-3/8 (264)
Ø11-16 (18)
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