Service and Troubleshooting
Copyright © 2021 Goodman Manufacturing Company, L.P.
RS6621008
July 2021
TABLE OF CONTENTS
IMPORTANT INFORMATION ............................................ 2
PRODUCT IDENTIFICATION ........................................... 4
SYSTEM OPERATION ...................................................... 5
SCHEDULED MAINTENANCE ....................................... 25
SERVICING ..................................................................... 29
CHECKING VOLTAGE .............................................. 30
CHECKING WIRING .................................................. 30
CHECKING THERMOSTAT, WIRING ....................... 30
CHECKING TRANSFORMER AND CONTROL
CIRCUIT ...................................................................... 31
CHECKING AIR CIRCULATOR BLOWER MOTOR 31
CHECKING DUCT STATIC ........................................ 32
CHECKING TEMPERATURE RISE .......................... 32
CHECKING PRIMARY LIMIT CONTROL ................. 33
CHECKING AUXILIARY LIMIT CONTROL ............... 33
CHECKING FLAME ROLLOUT CONTROL ............. 34
INDUCED DRAFT BLOWER MOTOR ...................... 35
CHECKING GAS VALVE (REDUNDANT) ................ 35
CHECKING MAIN BURNERS ................................... 35
CHECKING ORIFICES .............................................. 35
CHECKING GAS PRESSURE .................................. 36
CHECKING HOT SURFACE IGNITER ..................... 38
CHECKING FOR FLASHBACK ................................. 38
CHECKING PRESSURE SWITCH............................ 38
HIGH ALTITUDE APPLICATION ............................... 39
CHECKING FOR DELAYED IGNITION .................... 39
CHECKING INTEGRATED IGNITION CONTROL
BOARDS ..................................................................... 40
CHECKING FLAME SENSOR ................................... 40
AIRFLOW TABLES ........................................................ 42
1 STAGE STATUS CODES ........................................... 50
1 STAGE TROUBLESHOOTING CODES.................... 52
WIRING DIAGRAMS ....................................................... 54
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.
-
-
To Next Page
Need help?
General