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Goodman GMEC960803BNAA User Manual

Goodman GMEC960803BNAA
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Service and Troubleshooting

®

®


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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
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



Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
0140M00517-A

Table of Contents

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Goodman GMEC960803BNAA Specifications

General IconGeneral
BrandGoodman
ModelGMEC960803BNAA
CategoryFurnace
LanguageEnglish

Summary

PRODUCT IDENTIFICATION

Nomenclature

Breakdown of model number components and their meanings.

SYSTEM OPERATION

Introduction, Safety, and Product Application

Overview, safety warnings, ESD precautions, and application scope.

Location and Clearance Requirements

Guidelines for furnace placement, clearances, and installation area.

Combustion and Ventilation Air

Requirements for air intake and venting.

Installation Positions and Vent Termination

Furnace placement, horizontal mounting, and vent termination rules.

Gas Supply, Piping, and Electrical

Requirements for gas and electrical connections.

Thermostat Wiring and DIP Switch Settings

Thermostat connections and control board configuration.

Blower Operation and Airflow Control

Blower speed selection, CFM, and filter requirements.

SCHEDULED MAINTENANCE

Annual Inspection and General Maintenance

Yearly checks, filter replacement, and blower motor service.

Performance Testing and Gas Input Verification

Heating performance tests and gas meter clocking.

SERVICING

Electrical and Phasing Checks

Verifying power, polarity, phasing, and voltage.

Thermostat and Wiring Diagnostics

Troubleshooting thermostat and wiring issues.

Blower Motor, Duct Static, and Limit Controls

Testing blower motor, duct static, and limit switches.

Gas Pressure, Valve, and Burner Servicing

Checking gas pressure, valve, orifices, and burners.

Ignition System and Safety Device Checks

Testing ignitor, flashback, pressure switches, and ignition controls.

High Altitude and Delayed Ignition

Adjustments for altitude and diagnosing delayed ignition.

Flame Sensor and Control Board Testing

Testing flame sensor and ignition control board.

TROUBLESHOOTING

LED Diagnostic Codes and Symptoms

Interpreting LED codes for system faults.

Lockout Procedures and Fault Code Retrieval

Responding to lockouts and retrieving fault history.

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