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Westinghouse WHS18SZA21S User Manual

Westinghouse WHS18SZA21S
57 pages
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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

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Westinghouse WHS18SZA21S Specifications

General IconGeneral
Cooling Capacity18000 BTU
Voltage230V
Power Supply230V/60Hz
Dimensions (Indoor Unit)31.5 x 12.4 x 8.3 inches
Dimensions (Outdoor Unit)31.5 x 21.7 x 25.6 inches
Weight (Indoor Unit)24.3 lbs
Weight (Outdoor Unit)88.2 lbs
Operating Temperature (Cooling)64 - 90 °F

Summary

Special Precautions

Wiring Safety Precautions

Essential safety guidelines and warnings for electrical wiring procedures.

Transporting Safety Guidelines

Instructions for safely handling and moving the air conditioning units.

Product Specifications

Unit Dimensions

Installation Space Requirements

Installation Site Selection

Indoor Unit Installation Site

Recommendations for optimal placement and environment for the indoor unit.

Outdoor Unit Installation Site

Recommendations for optimal placement and environment for the outdoor unit.

Refrigerant Circuit Diagram

Air Purging and Leakage Test

Test Running Procedures

Post-Installation Checks

List of critical items to verify before initial operation.

Operation Test Methods

Procedures for testing cooling, heating, and fan functions.

Wiring Diagrams

Troubleshooting and Error Codes

Outdoor Unit Error Code Table

List of error codes, descriptions, and root causes for outdoor unit faults.

Indoor Unit Error Indicators

Information on error codes displayed by the indoor unit's 7-segment display.

Protection Fault Diagnosis

Analysis of protection systems and diagnostic steps for operational faults.

Component Trouble Diagnosis

Procedures for diagnosing issues related to the compressor, filter board, and communication systems.

Parts List and Diagrams

Included Accessories

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