Westinghouse WHP18SZA21S User Manual

AIR CONDITIONER
Wall mounted type
REFRIGERANT
R410A
INVERTER
INDOOR
WHP09WMA21S
WHP12WMA21S
WHP18WMA21S
WHP24WMA21S
OUTDOOR
WHP09SZA21S WHP12SZA21S WHP18SZA21S
WHP24SZA21S
, 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
SERVICE MANUAL

Westinghouse WHP18SZA21S Specifications

General

Brand	Westinghouse
Model	WHP18SZA21S
Category	Air Conditioner
Language	English

Summary

Special Precautions

Special Precautions - Installation and Servicing

When Installing

Specific considerations and requirements for installing the air conditioner unit.

When Connecting Refrigerant Tubing

Procedures and tips for securely connecting refrigerant tubing for leak-free operation.

When Servicing

Safety precautions and steps to follow when performing maintenance or repairs on the unit.

Specifications

Refrigerant Circuit

Air Purging and Leakage Test

Test Running

Check after Installation

A checklist of items to verify after the unit is installed before operation.

Operation Test

Procedures for conducting an operational test to ensure the unit functions correctly.

Wiring Diagrams

Troubleshooting

Error Code Table

A comprehensive table detailing error codes, their descriptions, and potential root causes.

Trouble Diagnosis of Protection

Voltage Protection

Current Protection

Trouble Diagnosis