Amana GMSS9 Series User Manual

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GMSS9*/GCSS9*/AMSS9*/ ACSS9*

Single Stage Gas Furnaces

and Accessories

RS6612012r2

March 2015

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 manufacturer's installation and operation instructions.

Copyright © 2014 - 2015 Goodman Company, L.P.

Service Instructions

is a registered trademark of Maytag Corporation or its related companies and is used under license.

All rights reserved.

Table of Contents

Questions and Answers:

R
Regina ClarkAug 2, 2025
Why is my Amana GMSS9 Furnace diagnostic LED flashing seven times?
- M
  Megan RobinsonAug 2, 2025
  The integrated control module diagnostic LED is flashing seven times during normal furnace operation because the flame sensor is coated or oxidized, positioned incorrectly, or the burner flame is lazy due to improper gas pressure or combustion air. Clean the flame sensor if coated/oxidized and inspect for proper sensor alignment. Compare the current gas pressure to the rating plate information and adjust as needed.
S
Sarah CardenasAug 10, 2025
What to do if Amana Furnace circulator blower runs continuously and the diagnostic LED is flashing four times?
- D
  Devin CampbellAug 10, 2025
  If the circulator blower runs continuously, but the furnace doesn't operate and the integrated control module diagnostic LED flashes four times, the issue might be a faulty primary or auxiliary limit switch, insufficient conditioned air over the heat exchanger, or loose wiring. * Check the primary/auxiliary limit and replace if necessary. * Inspect filters and ductwork for blockage, cleaning filters or removing obstructions. * Ensure that the wiring connections are tightened or corrected.
S
stephanieturnerAug 16, 2025
What to do if Amana Furnace circulator blower runs continuously and the diagnostic LED is flashing six times?
- H
  Haley JosephAug 17, 2025
  If the circulator blower runs continuously, but the furnace doesn't operate and the integrated control module diagnostic LED flashes six times, it could be due to flame rollout, misaligned burners, a blocked flue or air inlet pipe, a failed induced draft blower, loose wiring, a faulty rollout limit, a short in thermostat wiring or a control board fuse. * Check burners for proper alignment. * Check the flue and air inlet piping for blockage, proper length, elbows, and termination, correcting as necessary. * Tighten or correct wiring connections. * Check the rollout limit and replace if necessary. * Replace the control board fuse.
A
Allison CookAug 25, 2025
Why is my Amana GMSS9 failing to operate and the diagnostic LED flashing continuously?
- J
  Jake WilsonAug 25, 2025
  If the furnace fails to operate and the integrated control module diagnostic LED is flashing continuously, the polarity of the 115 or 24-volt power may be reversed, the orange and gray wires to the transformer may be reversed, or the unit ground may be poor. Review the wiring diagram to correct the polarity and reverse the orange and gray wires going to the transformer. Verify proper ground and correct if necessary.

Amana GMSS9 Series Specifications

General

Brand	Amana
Model	GMSS9 Series
Category	Furnace
Language	English

Summary

IMPORTANT INFORMATION

For Your Safety Read Before Operating

Essential safety warnings and precautions before operating the furnace.

Operating Instructions

Step-by-step guide for starting and operating the furnace safely.

To Turn Off Gas to Appliance

PRODUCT IDENTIFICATION

Model Number Structure Explained

Furnace Model Descriptions

Detailed descriptions of various furnace models and their features.

INSTALLATION CONSIDERATIONS

Safety Precautions

Critical safety warnings and guidelines for furnace installation.

Furnace Location Requirements

Guidelines for selecting an appropriate and safe installation location.

Vent and Combustion Air Piping

Requirements for vent/flue pipe and combustion air pipe terminations.

Gas Supply and Piping Requirements

Guidelines for connecting and sizing gas supply piping.

Electrical Connections Guide

Instructions for making electrical connections, including accessories.

Circulating Air and Filters

WIRING DIAGRAMS

Wiring Diagram: AFE1860A Control Board

Wiring schematic for the AFE1860A all fuel system control board.

SERVICING

Servicing: Checking Voltage (S-1)

Procedure for checking voltage levels for furnace operation.

Servicing: Checking Wiring (S-2)

Servicing: Thermostat and Wiring (S-3A)

Troubleshooting thermostat connections and wiring issues.

Servicing: Transformer & Control Circuit (S-4)

Testing the 120V to 24V transformer and control circuit.

Servicing: Blower Motor Check (S-16A)

Testing the Permanent Split Capacitor (PSC) circulator blower motor.

Servicing: Duct Static Check (S-200)

Servicing: Temperature Rise Check (S-201)

Servicing: Primary Limit Control Check (S-300)

Testing the primary limit control for proper operation.

Servicing: Flame Rollout Control Check (S-302)

Testing the manual reset flame rollout control switch.

Servicing: Induced Draft Blower Motor (S-303)

Servicing: Gas Valve Check (S-304)

Servicing: Main Burners Check (S-305)

Servicing: Gas Pressure Check (S-307)

Measuring and adjusting gas inlet and manifold pressures.

Servicing: Hot Surface Ignitor Check (S-308)

Servicing: Flashback Check (S-309)

Servicing: Pressure Switch Check (S-310)

Servicing: Delayed Ignition Check (S-312)

Servicing: Ignition Control Board Check (S-313)

Servicing: Flame Sensor Check (S-314)

TROUBLESHOOTING

Troubleshooting: Furnace Fails to Operate

Common causes and solutions when the furnace does not start.

Troubleshooting: LED Flashing One (1)

Troubleshooting: LED Flashing Two (2)

Troubleshooting: Continuous Blower Operation

Troubleshooting: LED Flashing Seven (7)

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