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Goodman GMVM Service Manual

Goodman GMVM
81 pages
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1
96% Modulating Gas Furnaces
ACVM, AMVM, GCVM, GMVM
& Accessories
RS6612001r9
November 2013
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 © 2011 - 2013 Goodman Manufacturing Company, L.P.
Service Instructions
is a registered trademark of Maytag Corporation or its related companies and is used under license to Goodman Company, L.P., Houston, TX. All rights reserved.

Questions and Answers:

Goodman GMVM Specifications

General IconGeneral
ModelGMVM
Heating Capacity40, 000 to 120, 000 BTU/h
Heat Exchanger MaterialStainless Steel
Fuel TypeNatural Gas or Propane
Ignition SystemDirect Spark Ignition
WarrantyLimited Lifetime Heat Exchanger, 10-Year Parts Limited Warranty

Summary

Important Information and Safety Notices

Recognize Safety Symbols, Words and Labels

Guidance on understanding safety symbols and warnings in the manual.

Carbon Monoxide Poisoning Hazard

Hazards related to carbon monoxide poisoning and necessary ventilation.

Product Identification and Accessories

Model Number Breakdown

Explanation of model number coding for furnace identification.

Amana Brand Furnace Accessories

Table showing accessory compatibility for Amana furnace models.

Concentric Vent Conversion Kit

Information on concentric vent kits for vertical and horizontal termination.

Product Design and Installation

Electrostatic Discharge (ESD) Precautions

Procedures to prevent damage from static discharge during servicing.

Clearances and Accessibility

Minimum clearance requirements for combustible materials.

Combustion & Ventilation Air Requirements

Critical requirements for combustion and ventilation air supply.

Alternate Vent/Flue and Combustion Air Connections

Alternative connection methods for vent/flue and combustion air.

Vent/Flue Pipe Terminations

Guidance on vertical and horizontal vent/flue pipe terminations.

Direct Vent Terminal Clearances

Clearance requirements for direct vent terminal installations.

Operation and Troubleshooting

Upright Installations-Trap on Right Side

Connecting drain hoses for upright installations with trap on the right side.

Electrical Connections

General warnings and instructions for electrical connections.

24 Volt Thermostat Wiring

Wiring instructions for 24V thermostats and integrated control module.

Propane Gas Conversion

Warnings and instructions for propane gas conversion.

Checking Static Pressure

Procedure for measuring external static pressure.

Circulator Blower Speeds

Adjusting circulator blower speeds for heating and cooling.

DIP Switches

Details on DIP switch functions for furnace operation.

Furnace Startup

Step-by-step procedure for starting the furnace.

Gas Manifold Pressure Measurement

Procedure for measuring gas manifold pressure.

Symptoms of Abnormal Operation

Table of symptoms and diagnostic codes for furnace issues.

Status Codes

Table of status codes and their meanings for furnace operation.

Servicing Procedures

S-1 Checking Voltage

Procedure for checking line voltage to the furnace.

S-303 Induced Draft Blower Motor

Testing and troubleshooting the induced draft blower motor.

S-307 Checking Gas Pressure

Measuring gas supply and manifold pressures.

S-313 Checking Integrated Ignition Control Boards

Troubleshooting ignition control boards and diagnostic LEDs.

S-314 Checking Flame Sensor

Checking and cleaning the flame sensor for proper function.

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