Goodman GMEC960603BNBA - User Manual

Service and Troubleshooting
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®
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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 and Warnings

Safety Warnings and Hazards

General safety precautions, high voltage, and carbon monoxide hazards.

Product Identification

Nomenclature and Model Breakdown

Explanation of model number components for identification.

System Operation

Introduction, Safety, and Application

Furnace overview, intended use, safety, and ESD precautions.

Installation Requirements and Air

Guidelines for location, combustion air, and ventilation.

Venting, Piping, and Conversions

Vent/flue pipe requirements, materials, and propane/altitude adjustments.

Thermostat Wiring and DIP Switches

Configurations for thermostat wiring and control board DIP switches.

Sequence of Operation

Step-by-step furnace operation in heating, cooling, and fan modes.

Scheduled Maintenance

Annual Inspection and Filter Care

Recommended annual inspection items and air filter maintenance.

Performance Testing Procedures

Methods for heating performance testing and gas meter clocking.

Servicing Procedures

Electrical Component Diagnostics

Testing voltage, phasing, transformers, and wiring integrity.

Airflow and Duct Static Checks

Checking blower motor operation and duct static pressure.

Safety Control and Gas System Checks

Testing limit controls, gas valve, and gas pressure.

Ignition System Troubleshooting

Diagnosing ignitors, flashback, pressure switches, and ignition controls.

Troubleshooting Guide

Diagnostic Chart and Error Codes

Table of symptoms, fault descriptions, and LED codes for diagnostics.

Lockout Conditions and Reset Procedures

Understanding lockout states and procedures for resetting the furnace.

Wiring Diagrams

Diagram Interpretation and Codes

Explanation of wiring diagrams, color codes, and LED flash codes.

Goodman GMEC960603BNBA Specifications