GSZH5 Service Manual

Service and Troubleshooting
ANX, SSX, ASX, GSX, DSX, VSX Condensing Units,
ANZ, SSZ, ASZ, GSZ, DSZ, VSZ Split System Heat Pumps
GSXH5, ASXH5,GSZH5, ASZH5,
With R-410A Refrigerant Blowers, Coils, & Accessories
RS6200006r103
July 2022
Pride and workmanship go into every product to provide
our customers with quality products. It is possible, however,
that during its lifetime a product may require service.

technician who is familiar with the safety procedures
required in the repair and who is equipped with the proper
tools, parts, testing instruments and the appropriate service
manual. REVIEW ALL SERVICE INFORMATION IN THE
APPROPRIATE SERVICE MANUAL BEFORE
BEGINNING REPAIRS.
TABLE OF CONTENTS
IMPORTANT INFORMATION ............................................. 2
PRODUCT IDENTIFICATION ............................................4
PRODUCT DESIGN .........................................................56
SYSTEM OPERATION ..................................................... 59
SERVICING ...................................................................... 69
CHECKING VOLTAGE .................................................69
CHECKING WIRING ....................................................69
CHECKING THERMOSTAT AND WIRING ..................69
THERMOSTAT WIRING ...............................................69
CHECKING TRANSFORMER AND CONTROL
CIRCUIT .......................................................................70
CHECKING CONTACTOR AND/OR RELAYS .............70
CHECKING CONTACTOR CONTACTS .......................70
CHECKING FAN RELAY CONTACTS ..........................71
CHECKING LOSS OF CHARGE PROTECTOR
(HEAT PUMP MODELS) ..............................................72
CHECKING HIGH PRESSURE CONTROL ................72
CHECKING LOW PRESSURE CONTROL ..................72
COPELAND COMFORT ALERT™ DIAGNOSTICS -
3-WIRE MODULE ........................................................73
COPELAND CORESENSE™ DIAGNOSTICS -
3-WIRE MODULE .........................................................73
CHECKING CAPACITOR ............................................. 79
RESISTANCE CHECK USING A DIGITAL
MULTI-METER .............................................................79
CAPACITANCE CHECK USING A DIGITAL
MULTI-METER (IN CAPACITANCE MODE) ................79
TESTING A RUN CAPACITOR UNDER LOAD ............79
CHECKING OUTDOOR FAN AND BLOWER
MOTORS (PSC MOTORS) ..........................................79
CHECKING FAN AND BLOWER MOTOR
(ECM MOTORS) ..........................................................79
©2020-2022 Daikin Comfort Technologies Manufacturing, L.P.
Brand
®
is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved.
For service information related to the Bluetooth® Shared
Data Loader BTSDL01 referenced in this manual, please
refer to the installation instructions for the BTSDL01 at
www.coolcloudhvac.com/loaderuserguide.
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