Westinghouse WHP09WMA21S Service Manual
Wall mounted type inverter
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AIR CONDITIONER
Wall mounted type
INDOOR
OUTDOOR
, 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.
SERVICE MANUAL
WHP09WMA21S
WHP12WMA21S
WHP09SZA21S
WHP24SZA21S
WHP18WMA21S
WHP24WMA21S
WHP12SZA21S
R410A
REFRIGERANT
INVERTER
WHP18SZA21S
2020.06.30
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Table of Contents
Related Manuals for Westinghouse WHP09WMA21S
Summary of Contents for Westinghouse WHP09WMA21S
- Page 1 SERVICE MANUAL INDOOR WHP09WMA21S WHP18WMA21S WHP12WMA21S WHP24WMA21S WHP09SZA21S WHP12SZA21S WHP18SZA21S OUTDOOR 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...
- Page 2 Notices: • Product specifications and design are subject to change without notice for future improvement. • For further details, please check with our authorized dealer. 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.
- Page 3 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.
- Page 4 Specifications Wall mounted Type 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 2.64 3.51 Rated Btu/h 9,000 12,000 Cooling 1.06—2.93 1.17—3.96 Min.—Max. Btu/h 3,600—10,000 4,000—13,500...
- Page 5 Wall mounted Type 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 5.28 6.86 Rated Btu/h 18,000 23,400 Cooling 1.905—5.7153 2.345—7.767 Min.—Max. Btu/h 6,500—19,500 8,000—26,500 Capacity 5.57 7.62...
- Page 6 Type Inverter heat pump Model name WHP09SZA21S WHP12SZA21S Power supply 208/230 V ~ 60 Hz Available voltage range 198—253 V Airflow rate 971 (1,650) 1,177 (2,000) CFM (m Type × Q'ty Propeller fan × 1 Motor output Sound pressure level * dB (A) 26-7/8 ×...
- Page 7 Type Inverter heat pump Model name WHP18SZA21S WHP24SZA21S Power supply 208/230 V ~ 60 Hz Available voltage range 198—253 V 1,648 2,354 Airflow rate CFM (m (2,800) (4,000) Type × Q'ty Propeller fan × 1 Motor output dB (A) Sound pressure level * 35-1/4 ×...
- Page 8 Dimensions Models: WHP09WMA21S and WHP12WMA21S Unit: in (mm) 33-7/16 (850) 8-7/16 (215) 1-13/16 7-3/16 28-7/16 (723) 2-9/16 (46.5) (183.2) (63.5) Models: WHP18WMA21S and WHP24WMA21S Unit: in (mm) 2-1/8 1-7/8 (47) 38-3/16 (970) (80) - 7 -...
- Page 9 Installation space requirement Provide sufficient installation space for product safety. Unit: in (mm) - 8 -...
- Page 10 Model: WHP09SZA21S Unit: in (mm) 5/8 (16) 7/16 (11) 5-7/16 17-7/16 4-3/4 (138) (443) 2-7/8 (120) 9-7/8 (73) (251) 28-1/8 (715) 8-7/8 (226) 3/16 × 3/8 × 13/16 1-7/8 (47) (4 × 10 × 20) - 9 -...
- Page 11 Model: WHP12SZA21S Unit: in (mm) 11 (280) 20-1/16 (510) - 10 -...
- Page 12 Model: WHP18SZA21S Unit: in (mm) 37-1/2 (953) 3 (76) 33-7/8 (860) 25° 4-15/16 (125) 1-3/8 (35) 21-5/8 (550) 1-15/16 (50) Ø11/16 (18) (Drain port) 6-5/8 21-5/16 (168) (542) - 11 -...
- Page 13 Model: WHP24SZA21S Unit: in (mm) 35-3/8 (898) 34-13/16 (885) 13-1/16 (332) 3-1/16 (78) 22-7/8 (581) Pipe size: Ø3/8 (9.53) Pipe size: Ø5/8 (15.88) 1-15/16 (50) 26-1/16 (662) - 12 -...
- Page 14 Installation space Models: WHP09SZA21S, WHP12SZA21S, WHP18SZA21S, and WHP24SZA21S Space requirement Provide sufficient installation space for product safety. CAUTION Keep the space shown in the installation examples. If the installation is not performed accordingly, it could cause a short circuit and result in a lack of operating performance.
- Page 15 Site for installing the indoor unit • Where there is no obstruction near the air outlet and air Indoor unit can be easily blown to every corner. • Where piping and wall hole can be easily arranged. • Keep the required space from the unit to the ceiling and Pipe length: Max.
- Page 16 Refrigerant circuit Models: WHP09SZA21S, WHP12SZA21S, WHP18SZA21S, and WHP24SZA21S - 15 -...
- Page 17 Air Purging and Leakage Test 1. Connect charging hose of manifold valve to charge end of low pressure valve (both high/low pressure valves must be tightly shut). 2. Connect joint of charging hose to vacuum pump. 3. Fully open the handle of Lo manifold valve. 4.
- Page 18 Test Running △ Check after Installation r i f It may cause insufficient Have you done the refrigerant leakage test? cooling(heating)capacity Is heat insulation sufficient? It may cause condensation and dripping. Is water drainage satisfactory? It may cause condensation and dripping. Is the voltage in accordance with the rated It may cause electric malfunction or damage the voltage marked on the nameplate?
- Page 19 Wiring diagrams Models: WHP09WMA21S, WHP12WMA21S, WHP18WMA21S, and WHP24WMA21S - 18 -...
- Page 20 Models: WHP09SZA21S, WHP12SZA21S, WHP18SZA21S, and WHP24SZA21S OPTIONAL CN801 CN203 AC-L CN204 AC-N CN206 POWER ELECTRONIC EXPANSION VALVE CN952 OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL HEATER PRESSURE COOL VALVE DRED PROTECTOR OUTDOOR CN904 TEMP. CN905 COIL TEMP. CN807 CN910 CN911 CN920 CN907 BRN(OG) BRN(OG)
- Page 21 Troubleshooting Error Code Table 1.Indication on the outdoor unit: When the unit has the following trouble and the compressor stops running, The LED of outdoor control board will show the error sequence automatically: ★： ： ： NOTE: LIGHT FLASH Error Outdoor Failure LED1 LED2 LED3 the root cause my be one of the following code...
- Page 22 a. The EEPROM chip is loose; Outdoor b. The EEPROM chip inserted with opposite ★ ★ ★ EEPROM in direction; trouble c. The EEPROM chip is failure Compressor a. The compressor exhaust temperature sensor is exhaust ★ failure; temperature too b.
- Page 23 a. The IPM board is failure; b. The outdoor fan is broken; c. The outdoor fan motor is failure; IPM module d. The outdoor fan has been blocked ; protection e. The condenser is dirty; f. The outdoor unit has been installed without standard.
- Page 24 Frequency dcreasing or prohibition of ★ ★ frequency rising caused by too high compressor discharge temperature Limit to the max operating frequency caused by too low power voltage Operation at fixed frequency (in the case of ★ ★ ★ capability measuring or compulsory operation at fixed frequency) Protective frequency decreasing against outdoor overload (overpower, over frequency converion...
- Page 25 Normal a. The outdoor temperature The failure for sensor loose; temperature b. The outdoor temperature sensor of sensor is failure; outdoor coil c. The indoor control board is failure a. T he compressor exhaust Compressor temperature sensor connect exhaust loose; ★...
- Page 26 a. The fan motor run abnormally; b. The condenser and Current ★ ★ ★ overload evaporator is dirty; c. The air inlet and outlet is protection abnormally a. The outdoor control board is short circuit; Maximum b. The drive board is short current circuit;...
- Page 27 d. the refrigerant system is abnormal. a. the PFC is failure; b. the outdoor drive board is PFC protection failure a. the outdoor drive board is DC compressor failure; start failure b. the compressor is failure a. the outdoor drive board is failure;...
- Page 28 a. The indoor room temperature The failure for sensor loose; b. The indoor room temperature temperature ★ sensor of sensor is failure; c. The indoor control board is indoor room failure. a. The indoor coil temperature The failure for sensor loose; temperature b.
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Page 29: Table Of Contents
Normal a. The outdoor temperature sensor The failure for loose; temperature b. The outdoor temperature sensor ★ ★ sensor of is failure; outdoor coil c. The indoor control board is failure a. The compressor exhaust Compressor temperature sensor connect loose; exhaust b. -
Page 30: The Compressor Exhaust Temperature Sensor Connect Loose
a. The outdoor control board is short Maximum circuit; current b. The drive board is short circuit; c. The other components is short protection circuit Communication a. The connection wires connect trouble loose ★ between b. The outdoor board or drive outdoor unit board is failure;... -
Page 31: The Outdoor Fan Is Broken
a. The outdoor drive board is failure; b. The compressor is failure Compressor ★ c. The outdoor control board is drive in trouble failure a. The connection of the outdoor fan motor is loose; Outdoor fan b. There are something block the ★... -
Page 32: The Communication Cable
a. The communication cable connect loose; b. The communication cable is failure; c. The connection between the filter board and the outdoor control Communication board is incorrect or loose; failure between ★ d. The connection between the filter the indoor unit board and the terminal is incorrect and outdoor or loose;... - Page 33 Test the jumper terminals Note: When the whole machine is powered up, if the external unit does not work, to rule out the communications failures, adopt screening method such as short circuit on the jumper terminals to see if the external unit can be started normally or similar method. There are two blue terminals on the outdoor control panel, as shown above.
- Page 34 compressor and outdoor fan stop, but indoor fan runs normally. Condition for ending over-current protection: when the current drops below “current value for releasing the refrigeration current protection (E2 value)”, over-current protection will be released. 2. Frequency decreasing for over-current Conditions for over-current frequency decreasing : if the current is equal to or greater than “current value for starting the refrigeration current protective frequency decreasing (E2 value)”, over-current frequency decreasing starts.
- Page 35 Trouble Diagnosis of Compressor Judging the connecting terminals of inverter compressor: It is impossible to identify terminals U, V and W of inverter compressor with multi-meter. Just connect the terminals in the same way as the original unit when replacing the compressor. A wrong connection will lead to reverse and loud noise of the compressor.
- Page 36 Parts INDOOR UNIT WHP09WMA21S - 35 -...
- Page 37 INDOOR UNIT WHP09WMA21S Part number Description 1906600 Installation plate assy 1984201 Baffle 1854439 Base holder part 1555378 Vertical level vane 1555381 Center staff 1555385 Center staff 1555387 Center staff 1260259 Step motor 1555386 Motor guard 1555374 Level vane 1466014 Cross-flow fan blade...
- Page 38 INDOOR UNIT WHP12WMA21S - 37 -...
- Page 39 INDOOR UNIT WHP12WMA21S Part number Description 1906600 Installation plate assy 1984201 Baffle 1854439 Base holder part 1555378 Vertical Level Vane 1555381 Center staff 1555385 Center staff 1555387 Center staff 1260259 Step motor 1555386 Motor guard 1555374 Level vane 1466014 Cross-flow fan blade 1223739 Bearing 1465670...
- Page 40 INDOOR UNIT WHP18WMA21S 阶 段 标 记 重 量 比 例 标记 处数 更改文件号 签 字 日 期 设 计 共 张 第 张 校 对 标 准 化 - 39 -...
- Page 41 INDOOR UNIT WHP18WMA21S Part number Description 1907022 Installation plate assy 1954365 Base holder part 1260311 Step motor 1541366 Center staff 1541373 Motor guard 1541456 Vertical level vane 1541368 Center staff 1550291 Vertical level vane 1550300 Vertical level vane 1541363 Level vane 1222824 Axis sheath 1541633...
- Page 42 INDOOR UNIT WHP24WMA21S 阶 段 标 记 重 量 比 例 标记 处数 更改文件号 签 字 日 期 设 计 共 张 第 张 标 准 化 校 对 - 41 -...
- Page 43 INDOOR UNIT WHP24WMA21S Part number Description 1907022 Installation plate assy 1954365 Base holder part 1260311 Step motor 1541366 Center staff 1541373 Motor guard 1541456 Vertical level vane 1541368 Center staff 1550291 Vertical level vane 1550300 Vertical level vane 1541363 Level vane 1222824 Axis sheath 1541633...
- Page 44 OUTDOOR UNIT WHP09SZA21S - 43 -...
- Page 45 OUTDOOR UNIT WHP09SZA21S Part number Description 2135537 Panel parts 1405123 Propeller fan blade 1457759 DC motor 1824869 Motor supporter 1824871 Mounting plate 1824865 Upper board 1824902 Back guard 1824903 Left guard 1854202 Condenser assembly 1854218 Base holder part 1858994 Clapboard part 1829624 PFC inductance 1854176...
- Page 46 OUTDOOR UNIT WHP12SZA21S - 45 -...
- Page 47 OUTDOOR UNIT WHP12SZA21S Part number Description 2138572 Panel parts 1556766 Propeller fan blade 1457759 DC motor 1849292 Motor supporter assy 1846086 Mounting plate 1846082 Upper board 1854579 Back guard 1854580 Back guard 1851339 Condenser assembly 1851356 Base holder part 1847982 Clapboard 1829624 PFC inductance...
- Page 48 OUTDOOR UNIT WHP18SZA21S - 47 -...
- Page 49 OUTDOOR UNIT WHP18SZA21S Part number Description 2138571 Panel parts 1841783 Propeller fan blade 1859837 DC motor 1841953 Motor supporter 1841772 Mounting plate 1841779 Upper board 1854661 Back guard 1871792 Back guard 1854747 Condenser assembly 1841349 Base holder part 1841986 Clapboard 1205797 PFC inductance 1888252...
- Page 50 OUTDOOR UNIT WHP24SZA21S - 49 -...
- Page 51 OUTDOOR UNIT WHP24SZA21S Part number Description 1542623 Panel parts 1542217 Propeller fan blade 1561964 DC motor 1561919 Motor supporter 1878885 Top plate part 1819106 Back guard 1854549 Condenser assembly 1814292 Base holder part 1534867 Valve seat 1205797 PFC inductance 2017922 4-way reversing valve assembly 1830018 Compressor...
- Page 52 Accessories Indoor unit Part name Q’ty Part name Q’ty Remote controller instructions Drain joint rubber seal Use and installation instructions Flare nuts Remote controller Bag of wall anchors and screws Remote controller holder Screw for installations 09/12 model: 1 AAA battery Screw cover 18/24 model: 3 09-18 model: 1...