Service and Troubleshooting
®
®
Copyright © 2021 Goodman Manufacturing Company, L.P.
RS6612020
June 2021
is a registered trademark of Maytag Corporation or its related companies and is used under license.
All rights reserved.
TABLE OF CONTENTS
IMPORTANT INFORMATION ............................................ 2
PRODUCT IDENTIFICATION ........................................... 4
SYSTEM OPERATION ...................................................... 5
SCHEDULED MAINTENANCE ....................................... 18
SERVICING ..................................................................... 22
CHECKING VOLTAGE .............................................. 23
CHECKING WIRING .................................................. 23
CHECKNG THERMOSTAT, WIRING ........................ 23
CHECKING TRANSFORMER AND CONTROL
CIRCUIT ...................................................................... 23
CHECKING AIR CIRCULATOR BLOWER MOTOR 24
CHECKING DUCT STATIC ........................................ 24
CHECKING TEMPERATURE RISE .......................... 25
CHECKING PRIMARY LIMIT CONTROL ................. 25
CHECKING AUXILIARY LIMIT CONTROL ............... 26
CHECKING FLAME ROLLOUT CONTROL ............. 27
INDUCED DRAFT BLOWER MOTOR ...................... 27
CECKING GAS VALVE (REDUNDANT) ................... 27
CHECKING MAIN BURNERS ................................... 28
CHECKING ORIFICES .............................................. 28
CHECKING GAS PRESSURE .................................. 28
CHECKING HOT SURFACE IGNITOR ..................... 30
CHECKING FOR FLASHBACK ................................. 30
CHECKING PRESSURE SWITCH............................ 30
HIGH ALTITUDE APPLICATION ............................... 31
CHECKING FOR DELAYED IGNITION .................... 31
CHECKING INTERGRATED IGNITION CONTROL
BOARDS ..................................................................... 31
CHECKING FLAME SENSOR ................................... 32
TROUBLESHOOTING CHART ....................................... 33
WIRING DIAGRAMS ....................................................... 37
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.
Products should be serviced only by a qualied 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.
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