EasyManua.ls Logo

Goodman GMEC96 Service Manual

Goodman GMEC96
72 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
RS6612013r7
November 2017
This manual is to be used by qualified, professionally trained HVAC technicians only. Goodman does not
assume any responsibility for property damage or personal injury due to improper service procedures or
services performed by an unqualified person. The material in this manual does not supercede manufacturers
installation and operation instructions.
Copyright© 2014 - 2017 Goodman Company, L.P.
Service Instructions
Goodman
®
Brand GMEC96/GCEC96
& Amana
®
Brand AMEC96/ACEC96
Two Stage Furnace
with multi-speed ECM Motor
®
is a registered trademark of Maytag Corporation or its related companies and
is used under license to Goodman Company, L.P., Houston, TX, USA. All rights reserved.

Other manuals for Goodman GMEC96

Questions and Answers:

Goodman GMEC96 Specifications

General IconGeneral
AFUE Rating96%
TypeGas Furnace
StagesTwo-Stage
Energy Star CertifiedYes
Motor TypeECM
Fuel TypeNatural Gas
Cabinet TypeInsulated
Heating Capacity40, 000 to 120, 000 BTU/h
Warranty10-Year Parts Limited Warranty
Blower MotorVariable Speed

Summary

IMPORTANT INFORMATION

IMPORTANT NOTICES FOR CONSUMERS AND SERVICERS

Key notices for users and service personnel regarding safety and product use.

OPERATING INSTRUCTIONS

FOR YOUR SAFETY READ BEFORE OPERATING

Essential safety guidelines to read before operating the furnace.

TO TURN OFF GAS TO APPLIANCE

Procedure for safely shutting off the gas supply to the appliance.

OPERATIONS INSTRUCTIONS

SYSTEM OPERATION

HEAT MODE: CALL FOR 1ST STAGE HEAT

Procedure when the thermostat calls for first stage heating.

CALL FOR 2ND STAGE AFTER FIRST STAGE:

Procedure when a second stage heating call follows the first stage.

2ND STAGE SATISFIED, FIRST STAGE STILL CALLED:

Operation when the second stage is satisfied but the first stage is still active.

SIMULTANEOUS CALL FOR LOW AND HIGH HEAT

How the furnace responds to simultaneous calls for low and high heat.

COOLING MODE: LOW STAGE COOLING MODE SEQUENCE:

Sequence of operations when the thermostat calls for low stage cooling.

COMBUSTION AND VENTILATION AIR REQUIREMENTS

PROPANE GAS AND/OR HIGH ALTITUDE INSTALLATIONS

VENT/FLUE PIPE AND COMBUSTION AIR PIPE

GAS SUPPLY AND PIPING

PROPANE GAS CONVERSION

Instructions and warnings for converting the furnace to propane gas.

ELECTRICAL CONNECTIONS

COMBUSTION QUALITY

SERVICING

SERVICE NUMBERS

A list of service procedure reference numbers for troubleshooting and diagnostics.

Service Problem Analysis Guide

A guide linking symptoms to possible causes, tests, and remedies.

TROUBLESHOOTING

LED Diagnostic Codes

Interpretation of control board LED flash codes for fault diagnosis.

DIAGNOSTIC CHART

A chart detailing error conditions and corresponding LED flash codes for diagnosis.

FAULT RECALL

Procedures for accessing and managing fault codes and furnace lockouts.

SERVICING (Continued)

S-1 CHECKING VOLTAGE

Procedure to check voltage levels at various points in the furnace.

S-2 CHECKING WIRING

Steps for visually inspecting and testing furnace wiring for continuity and damage.

S-3A CHECKING THERMOSTAT AND WIRING

Procedures for testing thermostats, wiring, and the heating anticipator.

S-4 CHECKING TRANSFORMER AND Control CIRCUIT

Steps to check the function of the 24-volt transformer and control circuit.

S-16A CHECKING AIR CIRCULATOR BLOWER MOTOR (MULTI-SPEED ECM MOTOR)

Procedures for checking the multi-speed ECM blower motor.

S-300 CHECKING PRIMARY LIMIT CONTROL

Procedure to check the primary limit control for proper operation.

S-301 CHECKING AUXILIARY LIMIT CONTROL

Procedure to check the auxiliary limit control for safety and proper operation.

Testing Auxiliary Limit Control

Steps to test the auxiliary limit control for continuity.

302 CHECKING FLAME ROLLOUT CONTROL

Procedure to check the flame rollout control for proper function.

S-303 INDUCED DRAFT BLOWER Motor

Steps to check the induced draft blower motor for operation and continuity.

S-304 CHECKING GAS VALVE (Redundant)

Procedure to check the main gas valve for proper operation and safety.

MAINTENANCE

HEATING PERFORMANCE TEST

WIRING DIAGRAMS

Related product manuals