Westinghouse WHS12WMA21S 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 WHS12WMA21S Specifications

General

Cooling Capacity	12000 BTU
Operating Frequency	60 Hz
Weight	66.1 lbs
Noise Level (Indoor)	32 dB
Noise Level (Outdoor)	56 dB
Unit Dimensions (Indoor)	31.5 x 11.8 x 8.3 inches
Unit Dimensions (Outdoor)	31.5 x 21.7 x 12.2 inches
Unit Weight (Indoor)	17.6 lbs
Unit Weight (Outdoor)	66.1 lbs

Summary

Please Read Before Starting

SPECIAL PRECAUTIONS

When Wiring

Critical safety warnings and requirements for electrical wiring.

Specifications

Installation Space Requirement

Outdoor Unit Installation Space

Space Requirement

Site for installing the indoor unit

Site for installing the outdoor unit

Refrigerant circuit

SZA Series Refrigerant Circuit

Air Purging and Leakage Test

Test Running

Check after Installation

Operation Test

Wiring diagrams

WMA Series Wiring Diagrams

Wiring schematics for WMA series indoor and outdoor units.

WHS24WMA21S Wiring Diagram

WHS30WMA21S Wiring Diagram

WHS36WMA21S Wiring Diagram

WHS09/12WMA11S Wiring Diagrams

SZA Series Wiring Diagrams (Part 1)

SZA Series Wiring Diagrams (Part 2)

Troubleshooting

Outdoor Unit Error Code Table

Details error codes, descriptions, and root causes for outdoor unit issues.

Test the jumper terminals

Trouble Diagnosis of Protection

Voltage Protection

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

Current Protection

Trouble Diagnosis of Compressor

Trouble Diagnosis of Electric Filter Board

Trouble Diagnosis of Electric Communication