Westinghouse WHS12SZA11S User Manual

REFRIGERANT R410A
INVERTER
AIR CONDITIONER
Wall mounted type
SERVICE MANUAL
INDOOR
WHS09WMA21S
WHS09WMA11S
WHS12WMA21S
WHS12WMA11S
WHS18WMA21S
WHS24WMA21S WHS30WMA21S
WHS36WMA21S
OUTDOOR
WHS09SZA21S
WHS09SZA11S
WHS12SZA21S
WHS12SZA11S
WHS18SZA21S WHS24SZA21S
WHS30SZA21S
WHS36SZA21S
, 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.
2021.02.09

Westinghouse WHS12SZA11S Specifications

General

Cooling Capacity	12000 BTU
Fan Speeds	3
Remote Control	Yes
Power Supply	115V/60Hz
Operating Temperature	62°F - 90°F

Summary

SPECIAL PRECAUTIONS

When Wiring

Electrical safety for qualified electricians and proper wiring practices.

When Installing

Installation considerations for various locations and structural requirements.

When Connecting Refrigerant Tubing

Installation space

Space requirement

Test Running

Check after Installation

Operation Test

Wiring diagrams

Models: WHS09WMA21S, WHS12WMA21S, and WHS18WMA21S

Electrical wiring diagrams for specific indoor/outdoor unit models.

Model: WHS24WMA21S

Electrical wiring diagram for the WHS24WMA21S indoor unit.

Model: WHS30WMA21S

Electrical wiring diagram for the WHS30WMA21S indoor unit.

Model: WHS36WMA21S

Electrical wiring diagram for the WHS36WMA21S indoor unit.

Models: WHS09WMA11S and WHS12WMA11S

Electrical wiring diagrams for specific indoor/outdoor unit models.

Models: WHS09SZA21S, WHS12SZA21S, WHS18SZA21S, WHS24SZA21S, WHS30SZA21S, and WHS36SZA21S

Wiring diagrams for various outdoor unit models.

Models: WHS09SZA11S and WHS12SZA11S

Wiring diagrams for specific outdoor unit models.

Troubleshooting

Error Code Table

Lists error codes, LED indications, and potential root causes for outdoor unit faults.

LED display

Details LED display error codes for indoor units and their root causes.

Trouble Diagnosis of Protection

Voltage protection

Conditions and actions for AC input over/under-voltage protection.

Current protection

Conditions and actions for over-current protection and frequency decreasing.

Prohibition of frequency increasing of compressor exhausting

Prohibition of frequency for anti-overload of outdoor coiled pipe

Parts