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Goodman GMVC96 BA Series - User Manual

Goodman GMVC96 BA Series
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Service and Troubleshooting


Copyright © 2017-2020 Goodman Manufacturing Company, L.P.
RS6612014r3
October 2020
TABLE OF CONTENTS
IMPORTANT INFORMATION ............................................ 2
PRODUCT IDENTIFICATION ........................................... 4
SYSTEM OPERATION ...................................................... 5
SCHEDULED MAINTENANCE ....................................... 38
SERVICING ..................................................................... 42
CHECKING VOLTAGE .............................................. 43
CHECKING WIRING .................................................. 43
CHECKING THERMOSTAT, WIRING ....................... 43
HEATING ANTICIPATOR ........................................... 43
CHECKING TRANSFORMER AND CONTROL
CIRCUIT ...................................................................... 43
CHECKING DUCT STATIC ........................................ 46
CHECKING TEMPERATURE RISE .......................... 47
CHECKING PRIMARY LIMIT CONTROL ................. 47
CHECKING AUXILIARY LIMIT CONTROL ............... 48
CHECKING FLAME ROLLOUT CONTROL ............. 49
INDUCED DRAFT BLOWER MOTOR ...................... 49
CHECKING GAS VALVE (REDUNDANT) ................ 50
CHECKING MAIN BURNERS ................................... 50
CHECKING ORIFICES .............................................. 50
CHECKING GAS PRESSURE .................................. 51
CHECKING HOT SURFACE IGNITOR ..................... 53
CHECKING FOR FLASHBACK ................................. 53
CHECKING PRESSURE CONTROL ........................ 53
HIGH ALTITUDE APPLICATION ............................... 53
CHECKING FOR DELAYED IGNITION .................... 54
CHECKING INTEGRATED IGNITION CONTROL
BOARDS ..................................................................... 54
MEMORY CHIPS ........................................................ 55
CHECKING FLAME SENSOR ................................... 55
TROUBLESHOOTING CHART ....................................... 56
WIRING DIAGRAMS ....................................................... 64
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

Questions and Answers

Goodman GMVC96 BA Series Specifications

General IconGeneral
Model SeriesGMVC96 BA Series
Efficiency RatingUp to 96% AFUE
Fuel TypeNatural Gas or Propane
Heat Exchanger MaterialStainless Steel
Heating Capacity40, 000 to 120, 000 BTU/h
Input BTU40, 000 to 120, 000 BTU/h
StagesTwo-stage
Warranty10-Year Parts Limited Warranty

Summary

Service and Troubleshooting Guide

Important Information and Safety

Notices, Safety Symbols, and Labels

Essential notices for users, recognition of safety symbols, words, and labels for safe operation.

Product Identification

Nomenclature and Model Breakdown

Explanation of the 14-digit model number system and component identification.

System Operation

System Operation Safety and ESD Precautions

Crucial safety warnings, precautions, and ESD steps for furnace installation and operation.

Combustion Air and Installation Positions

Guidelines for combustion air requirements and recommended furnace installation positions.

Scheduled Maintenance

Annual Inspection and Filter Maintenance

Annual inspection points for furnace components and guidelines for air filter maintenance and replacement.

Condensate System and Performance Testing

Servicing condensate drainage system and performing heating performance tests.

Servicing and Diagnostics

Electrical Checks: Phasing, Voltage, and Wiring

Procedures for checking transformer phasing, voltage, thermostat, wiring, and general electrical components.

Limit Controls and Rollout Switch Checks

Testing primary, auxiliary limit controls, and flame rollout switches for safety and proper function.

Gas Pressure, Burner, and Ignitor Checks

Checking gas pressure, burners, orifices, and hot surface ignitors for optimal operation.

Ignition Control and Flame Sensor Diagnostics

Diagnosing ignition control boards and checking the flame sensor for proper operation.

Troubleshooting Fault Codes

Alarm Code Definition Tables

Reference tables defining diagnostic status codes and their corresponding causes and corrective actions.

ClimateTalk Operation Modes and Furnace Settings

Details on ClimateTalk modes and furnace control settings for AC/HP and overall operation.

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