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
WHZ09WMA21S
WHZ09SZA21S
WHZ12SZA21S
WHZ12WMA21S
R410A
REFRIGERANT
INVERTER
2021.12.13
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Westinghouse WHZ09WMA21S
Summary of Contents for Westinghouse WHZ09WMA21S
- Page 1 AIR CONDITIONER Wall mounted type SERVICE MANUAL INDOOR WHZ09WMA21S WHZ12WMA21S OUTDOOR WHZ09SZA21S WHZ12SZA21S , 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. 2021.12.13...
- 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 WHZ09WMA21S WHZ12WMA21S Power supply 208/230 V ~ 60 Hz Power supply intake Outdoor unit Available voltage range 187—253 V 2.64 3.52 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 Type Inverter heat pump Model name WHZ09SZA21S WHZ12SZA21S Power supply 208/230 V ~ 60 Hz Available voltage range 187—253 V Airflow rate 1,177 (2,000) CFM (m Type × Q'ty Propeller fan × 1 Motor output dB (A) Sound pressure level * 33-1/16 ×...
- Page 6 Dimensions Model: WHZ09WMA21S Unit: in (mm) 33-7/16 (850) Bottom view 8-7/16 (214.6) 7-3/16 1-13/16 (46.5) 28-7/16 (723) 2-1/2 (183.2) (63.5) Side view Front view Side view 2-3/4 (70) Ø2-3/4 (70) 23-5/16 (592) - 5 -...
- Page 7 Model: WHZ12WMA21S Unit: in (mm) 37-13/16 (960) 36 (914) Bottom view 9-5/16 (236) Tube exit 1-7/8 (47) 31-9/16 (801) 3-1/8 (79) Side view Front view Side view Air inlet Top view 5-3/8 (137) Ø2-3/4 (70) 24-3/4 (629) - 6 -...
- Page 8 Installation space requirement Provide sufficient installation space for product safety. Distance from the ceiling should be over 200 mm/7.9 in Distance from the wall should be over 50 mm/2 in Distance from the obstacle should be over 3.0 m/10 ft Distance from the wall should be over 50 mm/2 in Distance from the floor...
- Page 9 Models: WHZ09SZA21S and WHZ12SZA21S Unit: in (mm) 31-7/8 (810) 3 (75.56) 11 (280) 20-1/16 (510) - 8 -...
- Page 10 Installation space Models: WHZ09SZA21S and WHZ12SZA21S ¢ 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 11 Refrigerant circuit Models: WHZ09SZA21S and WHZ12SZA21S - 10 -...
- Page 12 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 13 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 14 Piping work and refrigerant charge 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. •...
- Page 15 Wiring diagrams Models: WHZ09WMA21S and WHZ12WMA21S 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 ( Room temp. ) 1.3 V 2.2 V...
- Page 16 5-1. Models: WHZ09SZA21S and WHZ12SZA21S OPTIONAL CN801 CN203 AC-L CN204 AC-N CN206 POWER ELECTRONIC EXPANSION VALVE OPTIONAL CN952 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) CN906...
- Page 17 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 18 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 19 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 20 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 conversion...
- Page 21 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 22 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 23 d. The refrigerant system is abnormal. a. The PFC is failure; b. The outdoor drive board PFC protection is failure a. The outdoor drive board DC compressor is failure; start failure b. The compressor is failure a. The outdoor drive board is failure;...
- Page 24 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 25: 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 26: 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 27: 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 28: 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 29 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 30 for starting the refrigeration current protective frequency decreasing (E2 value)”, over-current frequency decreasing starts. Over-current frequency decreasing actions: the compressor will decrease frequency at rate of (E2 value)Hz/S. The indoor and outdoor fans run. Conditions for ending over-current frequency decreasing: when the current drops below “current value for starting the refrigeration current protective prohibition of frequency rising (E2 value)”, over-current under-clocking will be released.
- Page 31 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 32 Parts list Indoor unit WHZ09WMA21S - 31 -...
- Page 33 Indoor unit WHZ09WMA21S Part number Description 1906600 Bracket wall 1984201 Baffle 1854439 Base assembly 1555378 Vertical louver 1555381 Holder center 1555385 Holder center 1555387 Holder center 1260259 Step motor 1555386 Guard motor 1555374 Louver 2092899 Cross flow fan assy 1223739...
- Page 34 Indoor unit WHZ12WMA21S - 33 -...
- Page 35 Indoor unit WHZ12WMA21S Part number Description 1541379 Cover display 1840141 Clamp cord 1852126 Terminal 1541500 Electric box cover 1870720 Electric box 2200403 Controller PCB 1541507 Cover wire 1837043 Cover wire 1561454 DC motor 1541374 Cover motor 1541369 Guard motor 1260311 Step motor 1470426 Drain hose...
- Page 36 Outdoor unit WHZ09SZA21S - 35 -...
- Page 37 Outdoor unit WHZ09SZA21S Part number Description 1902781 Front panel w/ grille 1556766 Propeller fan blade 1902991 Fan motor 2218087 Motor bracket 1902529 Mounting plate 1902528 Top panel 1854579 Protective net back 1854580 Protective net left 1918085 Condenser assembly 1851356 Base assembly 1847982 Separate wall 1893020...
- Page 38 Outdoor unit WHZ12SZA21S - 37 -...
- Page 39 Outdoor unit WHZ12SZA21S Part number Description 1902781 Front panel w/ grille 1556766 Propeller fan blade 1902991 Fan motor 1902996 Motor bracket 1902529 Mounting plate 1902528 Top panel 1854579 Protective net back 1854580 Protective net left 1917128 Condenser assembly 1895024 Base assembly 1546680 Separate wall 1893020...
- Page 40 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 AAA battery Screw cover 09 model: 1 Foam insulation Warranty card...
Need help?
Do you have a question about the WHZ09WMA21S and is the answer not in the manual?
Questions and answers