Westinghouse WHS36SZA21S - 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

Summary

Safety and Initial Precautions

General Safety Warnings and Cautions

Highlights hazard symbols and essential safety steps for operation.

Special Precautions for Handling

Covers critical safety measures for wiring and unit transport.

Installation and Servicing Guidance

Installation Environment and Tubing

Installation Space Requirements

Outdoor Unit Clearances

Site Selection Guidelines

System Operation Fundamentals

Air Purging and Leakage Test

Step-by-step instructions for system testing procedures.

Test Running Procedures

Pre-Operation Checks

Wiring Diagrams

Control Unit Wiring Details

Troubleshooting: Error Codes

Outdoor Unit Error Indicators (LEDs)

Explains LED signals on the outdoor unit for fault diagnosis.

Troubleshooting: Indoor Unit Errors

Indoor Unit Display Error Codes

Details error codes shown on the indoor unit's 7-segment display.

Trouble Diagnosis: Protection Functions

Voltage and Current Protection

Guides on diagnosing system protections like over-voltage and over-current.

Trouble Diagnosis: Components

Compressor and Communication Issues

Westinghouse WHS36SZA21S Specifications