Westinghouse WHS09WMA21S Service Manual
  1. Manuals
  2. Brands
  3. Westinghouse Manuals
  4. Air Conditioner
  5. WHS09WMA21S
  6. Service manual

Westinghouse WHS09WMA21S Service Manual

Wall mounted type
Hide thumbs Also See for WHS09WMA21S:
Table of Contents

Advertisement

Quick Links

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
WHS09WMA21S
WHS09WMA11S
WHS24WMA21S
WHS09SZA21S
WHS09SZA11S
WHS12SZA21S
WHS12SZA11S
WHS30SZA21S
WHS12WMA21S
WHS12WMA11S
WHS30WMA21S
WHS18SZA21S
R410A
REFRIGERANT
INVERTER
WHS18WMA21S
WHS24SZA21S
2020.06.30

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the WHS09WMA21S and is the answer not in the manual?

Questions and answers

Related Manuals for Westinghouse WHS09WMA21S

Summary of Contents for Westinghouse WHS09WMA21S

  • Page 1 WHS12WMA11S INDOOR WHS24WMA21S WHS30WMA21S WHS09SZA21S WHS18SZA21S WHS24SZA21S WHS09SZA11S WHS12SZA21S OUTDOOR WHS12SZA11S 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. 2020.06.30...
  • Page 2 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: ●...
  • 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 WHS09WMA21S WHS12WMA21S WHS18WMA21S Power supply 208/230 V ~ 60 Hz Power supply intake Outdoor unit Available voltage range 198—253 V 2.64 3.52 5.28 Rated Btu/h 9,000 12,000 18,000 Cooling 1.32—2.93 1.61—3.96 1.90—5.72...
  • Page 5 Wall mounted Type 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 7.03 8.79 Rated Btu/h 24,000 30,000 Cooling 2.34—7.77 3.37—9.81 Min.—Max. Btu/h 8,000—26,500 11,500—33,500 Capacity 7.15 9.09...
  • Page 6 Wall mounted Type Inverter heat pump Model name WHS09WMA11S WHS12WMA11S Power supply 115 V ~ 60 Hz Power supply intake Outdoor unit Available voltage range 103—127 V 2.64 3.52 Rated Btu/h 9,000 12,000 Cooling 0.35—2.93 0.73—3.96 Min.—Max. Btu/h 1,200—10,000 2,500—13,500 Capacity 2.93 3.87...
  • Page 7 Type Inverter heat pump Model name WHS09SZA21S WHS12SZA21S WHS18SZA21S Power supply 208/230 V ~ 60 Hz Available voltage range 198—253 V Airflow rate 942 (1,600) 942 (1,600) 1,177 (2,000) CFM (m Type × Q'ty Propeller fan × 1 Motor output dB (A) Sound pressure level * 27-3/8 ×...
  • Page 8 Type Inverter heat pump Model name WHS24SZA21S WHS30SZA21S 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 9 Type Inverter heat pump Model name WHS09SZA11S WHS12SZA11S Power supply 115 V ~ 60 Hz Available voltage range 103—127 V Airflow rate 942 (1,600) CFM (m Type × Q'ty Propeller fan × 1 Motor output dB (A) Sound pressure level * 27-3/8 ×...
  • Page 10 Dimensions Models: WHS09WMA21S and WHS09WMA11S Unit: in (mm) 8-7/16 (214) 29-5/16 (745) 25-13/16 (656) 1-13/16 (46.5) 7-3/16 (183.2) Models: WHS12WMA21S and WHS12WMA11S Unit: in (mm) 32-1/16 (815) 8-7/16 (214) 2 (51.3) Tube exit 1-13/16 28-7/16 (722) (46.5) Air inlet - 9 -...
  • Page 11 Model: WHS18WMA21S Unit: in (mm) 35-11/16 (907) 36 (915) 9-5/16 (236) 1-7/8 (47) 31-9/16 (801) 2-3/16 Tube exit (56) Air inlet Model: WHS24WMA21S Unit: in (mm) 9-5/16 (236) Tube exit 2-1/4 (57) - 10 -...
  • Page 12 Model: WHS30WMA21S Unit: in (mm) Tube exit Air inlet Installation space requirement Provide sufficient installation space for product safety. Distance from ceiling should be over 7.9 in (200 mm) Distance from wall should be over 2 in (50 mm) Distance from wall should be over 2 in (50 mm) Distance from floor should be over 8 ft (2.4 m)
  • Page 13 Models: WHS09SZA21S, WHS12SZA21S, WHS09SZA11S, and WHS12SZA11S 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) - 12 -...
  • Page 14 Model: WHS18SZA21S Unit: in (mm) 11 (280) 20-1/16 (510) - 13 -...
  • Page 15 Model: WHS24SZA21S 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) - 14 -...
  • Page 16 Model: WHS30SZA21S 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) - 15 -...
  • Page 17 Installation space Models: WHS09SZA21S, WHS12SZA21S, WHS18SZA21S, WHS24SZA21S, WHS30SZA21S, WHS09SZA11S, and WHS12SZA11S  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 18 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 19 Refrigerant circuit Models: WHS09SZA21S, WHS12SZA21S, WHS18SZA21S, WHS24SZA21S, WHS30SZA21S, WHS09SZA11S, and WHS12SZA11S - 18 -...
  • Page 20 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 21 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 22 Wiring diagrams Models: WHS09WMA21S, WHS12WMA21S, and WHS18WMA21S CONTROL UNIT PIPE TEMP. FAN MOTOR ROOM TEMP. OUTDOOR INDOOR UNIT UNIT Temperature 68 F 86 F Thermistor 15 k 6.5 k 4.5 k ( Pipe temp. ) 1.3 V 2.2 V 2.7 V...
  • Page 23 Model: WHS24WMA21S OPTIONAL CONTROL UNIT OPTIONAL MOTOR MOTOR LOUVER MOTOR HEAT EXCHANGER DISPLAY UNIT PIPE TEMP OPTIONAL WIRING CONTROL UNIT OR WIFI ROOM TEMP INDOOR OUTDOOR UNIT UNIT Temperature 68 F 86 F Thermistor 15 k 4.5 k 6.5 k ( Pipe temp.
  • Page 24 Model: WHS30WMA21S CONTROL UNIT OPTIONAL LOUVER MOTOR Wifi / Line control LOUVER MOTOR OPTIONAL LOUVER MOTOR OPTIONAL SWITCH UNIT HEAT EXCHANGER DISPLAY UNIT PIPE TEMP OPTIONAL INDOOR OUTDOOR FAN MOTOR UNIT UNIT ROOM TEMP Temperature 68 F 86 F Thermistor 4.5 k 15 k 6.5 k...
  • Page 25 Models: WHS09WMA11S and WHS12WMA11S CONTROL UNIT FAN MOTOR WIRING CONTROL UNIT OR WIFI OUTDOOR INDOOR UNIT UNIT Temperature 68 F 86 F Thermistor 4.5 k 15 k 6.5 k ( Pipe temp. ) 1.3 V 2.2 V 2.7 V Thermistor 4.5 k 15 k 6.5 k...
  • Page 26 Models: WHS09SZA21S, WHS12SZA21S, WHS18SZA21S, WHS24SZA21S, and WHS30SZA21S Compressor 09 model: 2.35 12 model: 1.7 18 model: 1.87 24 model: 0.75 30 model: 0.932 68 F Fan motor (09-24 model) Pin No. Terminal Lead wire Temperature Function of terminal 68 F 86 F code color...
  • Page 27 Models: WHS09SZA11S and WHS12SZA11S Temperature 68 F 86 F Compressor 09 model: 2.35 Thermistor 15 k 6.5 k 4.4 k ( ODU temp. ) 12 model: 1.7 1.3 V 2.2 V 2.7 V 68 F Thermistor 15 k 6.5 k 4.4 k ( Pipe temp.
  • Page 28 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 29 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 30 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 31 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 32 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 33 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 34 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 35 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.

  • Page 36: 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 37: 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 38: The Outdoor Fan Is Broken

    a. The outdoor drive board is failure; Compressor b. The compressor is failure ★ drive in trouble c. The outdoor control board is failure a. The connection of the outdoor fan motor is loose; Outdoor fan b. There are something block the ★...

  • Page 39: 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 ★...
  • Page 40 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 41 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 42 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 43 Parts Part number Description WHS09WMA21S WHS09WMA11S INDOOR UNIT ← WHS09WMA21S Bracket wall 1906605 WHS09WMA11S ← Baffle 1465666 ← Casing assembly 1856104 ← Vertical louver 1465662 ← Louver 1555320 ← Cross flow fan assy 1466013 ← 1223739 Bearing ← 1465670 Baffle...
  • Page 44 INDOOR UNIT Part number Description WHS12WMA21S WHS12WMA21S WHS12WMA11S WHS12WMA11S ← Bracket wall 1906600 ← Baffle 1465666 ← Casing assembly 1854463 ← Vertical louver 1465662 ← Louver 1555374 ← Cross flow fan assy 1466014 ← Bearing 1223739 ← Baffle 1465670 ← Evaporator 1512275 ←...
  • Page 45 INDOOR UNIT WHS18WMA21S Description Part number Cover display 1541379 Clamp cord 1840141 Terminal 1852126 Electric box cover 1541500 Electric box 1870720 Controller PCB 1933959 Cover wire 1541507 Cover wire 1837043 Motor fan 1858726 Cover motor 1541374 Guard motor 1541369 Step motor 1819726 Drain hose 1470426...
  • Page 46 INDOOR UNIT WHS24WMA21S Description Part number Bracket wall 1907022 Casing assembly 1954366 Louver 1541457 Vertical louver 1550294 Louver 1541363 Plug 1222824 Cross flow fan assy 1541633 Bearing 1223738 Baffle 1465670 Evaporator 1556041 Front panel 1816294 Display assembly 1564511 Intake grille 4080954 Label 1817417...
  • Page 47 INDOOR UNIT WHS30WMA21S Description Part number 1896952 Bracket wall 1868777 Casing assembly 1511626 Cross flow fan assy 1248742 Bearing 1868554 Air outlet parts 1225096 Step motor 1512013 Mounting plate 1508998 Axes 1509001 Holder center 1509000 Axes 1470426 Drain hose 1516166 Step motor Plug 1222824...
  • Page 48 OUTDOOR UNIT WHS09SZA21S WHS12SZA21S WHS09SZA11S WHS12SZA11S - 47 -...
  • Page 49 OUTDOOR UNIT WHS09SZA21S WHS12SZA21S WHS09SZA11S WHS12SZA11S Description WHS09SZA21S WHS12SZA21S WHS09SZA11S WHS12SZA11S ← ← Front panel w/ grille 1832902 1832902 ← ← Propeller fan blade 1405123 1405123 ← ← Fan motor 1820938 1457759 ← ← Motor bracket 1824869 1824869 ← ← Mounting plate 1824871 1824871...
  • Page 50 OUTDOOR UNIT WHS18SZA21S Description Part number Front panel w/ grille 1847919 Propeller fan blade 1556766 Fan motor 1854829 Motor bracket 1849292 Mounting plate 1846086 Top panel 1846082 Protective net left 1854580 7’ Protective net back 1854579 Condenser assembly 1854847 Base assembly 1850352 Separate wall 1847982...
  • Page 51 OUTDOOR UNIT WHS24SZA21S Description Part number Front panel w/ grille 1844019 Propeller fan blade 1841783 Fan motor 1841930 Motor bracket 1841749 Mounting plate 1841772 Top panel 1841779 Protective net left 1854661 7’ Protective net back 1871792 Condenser assembly 1854467 Base assembly 1844016 Sparate wall 1841986...
  • Page 52 OUTDOOR UNIT WHS30SZA21S Description Part number Front panel w/ grille 1542623 1542217 Propeller fan blade Fan motor 1561964 1561919 Motor bracket Top panel 1878885 1819106 Protective net back Condenser assembly 1854949 1561897 Base assembly Bracket valve 1534867 1302261 Choke coil Valve 4 way TA 1877142 1854539...
  • Page 53 Accessories Indoor unit Part name Q’ty Part name Q’ty Remote controller instructions Drain connector for outdoor unit 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...

This manual is also suitable for:

Whs09wma11sWhs12wma21sWhs12wma11sWhs18wma21sWhs24wma21sWhs30wma21s ... Show all

Table of Contents

Save PDF