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Intertek GMVC96 - User Manual

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79 pages
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RS6612010
August 2014
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.
Copyright © 2014 Goodman Company, L.P.
Service Instructions
The material in this manual does not supercede manufacturer's installation and operation instructions
TM
34.5" Chassis
ACVC96/AMVC96
GCVC96/GMVC96
Gas
Furnaces
is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved.
®
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Intertek GMVC96 Specifications

General IconGeneral
AFUE96%
Fuel TypeNatural Gas
Blower MotorVariable Speed
Vent TypeDirect Vent
WarrantyLifetime Heat Exchanger, 10-Year Parts

Summary

IMPORTANT INFORMATION

INSTALLATION CONSIDERATIONS

General Safety and Installation Precautions

Critical safety warnings, ESD precautions, product application, and general installation requirements.

Location Requirements and Environmental Factors

Guidelines for furnace placement, clearances, and considerations for air quality and temperature.

SYSTEM OPERATION

Normal Operation Sequences

Step-by-step description of furnace operation for power-up, heating, and cooling modes.

TROUBLESHOOTING

Abnormal Operation Symptoms and Codes

Table correlating abnormal symptoms with diagnostic codes, possible causes, and corrective actions.

Diagnostic Codes and Fault Descriptions

Detailed listing of diagnostic codes (E, d, b) and their corresponding fault descriptions and probable causes.

Comprehensive Error Code Reference

A complete list of all diagnostic error codes, their meanings, and associated furnace functions.

ComfortNet System Operation

SERVICING PROCEDURES

Transformer Phasing and Voltage Checks

Procedures for checking power phasing, voltage, and transformer function for proper furnace operation.

Voltage, Thermostat, and Anticipator Checks

Step-by-step guides for checking furnace voltage, thermostat wiring, and anticipator settings.

Transformer and ECM Motor Circuit Testing

Procedures for testing transformers, control circuits, and 4-wire ECM motors.

Duct Static and Temperature Rise Measurement

Methods for measuring duct static pressure and furnace temperature rise for performance optimization.

Limit Control Testing and Verification

Instructions for testing primary limit controls to ensure safe furnace operation.

Auxiliary Limit and Flame Rollout Control Checks

Procedures for testing auxiliary limit controls and flame rollout safety devices.

Induced Draft Blower and Gas Valve Testing

Steps for testing the induced draft blower motor and the redundant gas valve.

Gas Pressure Measurement and Adjustment Procedures

Procedures for measuring inlet and manifold gas pressures for Natural Gas and Propane.

MAINTENANCE

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