Goodman GMEC960803BNAB - User Manual

Service and Troubleshooting
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®


Copyright © 2014-2020 Goodman Manufacturing Company, L.P.
RS6612013r10
June 2020
®
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 ...................................................... 7
SCHEDULED MAINTENANCE ....................................... 42
SERVICING ..................................................................... 46
CHECKING VOLTAGE .............................................. 47
CHECKING WIRING .................................................. 47
CHECKNG THERMOSTAT, WIRING ........................ 47
HEATING ANTICIPATOR ........................................... 47
CHECKING TRANSFORMER AND CONTROL
CIRCUIT ...................................................................... 47
CHECKING AIR CIRCULATOR BLOWER MOTOR 48
CHECKING DUCT STATIC ........................................ 48
CHECKING TEMPERATURE RISE .......................... 49
CHECKING PRIMARY LIMIT CONTROL ................. 49
CHECKING AUXILIARY LIMIT CONTROL ............... 50
CHECKING FLAME ROLLOUT CONTROL ............. 51
INDUCED DRAFT BLOWER MOTOR ...................... 52
CECKING GAS VALVE (REDUNDANT) ................... 52
CHECKING MAIN BURNERS ................................... 52
CHECKING ORIFICES .............................................. 52
CHECKING GAS PRESSURE .................................. 53
CHECKING HOT SURFACE IGNITOR ..................... 55
CHECKING FOR FLASHBACK ................................. 55
CHECKING PRESSURE SWITCH............................ 55
HIGH ALTITUDE APPLICATION ............................... 56
CHECKING FOR DELAYED IGNITION .................... 56
CHECKING INTERGRATED IGNITION CONTROL
BOARDS ..................................................................... 56
CHECKING FLAME SENSOR ................................... 57
TROUBLESHOOTING CHART ....................................... 58
WIRING DIAGRAMS ....................................................... 61
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. 
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


Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
0140M00517-A

Summary

Important Information

Carbon Monoxide Hazard

Dangers of CO poisoning and necessary precautions.

System Operation

Location and Air Requirements

Gas, Propane, and Venting Systems

Operational Sequences and Modes

Detailed steps of furnace operation modes.

Scheduled Maintenance

Performance Testing Procedures

Servicing

Limit Controls and Rollout Switch

Gas Pressure and Valve Checks

Ignitor, Flame Sensor, and Pressure Switches

Troubleshooting

Troubleshooting Chart by LED Codes

Diagnosing issues based on LED flash codes.

Diagnostic Chart and Fault Retrieval

Understanding diagnostic codes and retrieving fault history.

Wiring Diagrams

Electrical Schematics and Component Identification

Diagrams showing electrical connections and components.

Goodman GMEC960803BNAB Specifications