Goodman AMES800804B User Manual

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Service and Troubleshooting





Copyright © 2019-2020 Goodman Manufacturing Company, L.P.

This manual is to be used by qualied, 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 unqualied person.

RS6621003r3

April 2020

®

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

All rights reserved.

TABLE OF CONTENTS

IMPORTANT INFORMATION ............................................ 2

PRODUCT IDENTIFICATION ........................................... 4

SYSTEM OPERATION ...................................................... 6

SCHEDULED MAINTENANCE ....................................... 25

SERVICING ..................................................................... 27

ACESSORIES ................................................................. 45

TROUBLESHOOTING CHART ....................................... 48

WIRING DIAGRAMS ....................................................... 51

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.

Products should be serviced only by a qualied 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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Cancer and Reproductive Harm -

www.P65Warnings.ca.gov

0140M00517-A

Table of Contents

Questions and Answers:

K
kellerjosephAug 14, 2025
What to do if Goodman AMES800804B LED is flashing 1 time?
- K
  Kathryn IngramAug 14, 2025
  If your Goodman Furnace fails to operate and the integrated control module diagnostic LED is flashing once, it indicates a furnace lockout due to excessive ignition retries. This can be caused by a gas interruption. You should locate and correct the gas interruption. Also check the front cover pressure switch operation, including the hose, wiring, and contact operation, and correct if necessary. Other possible solutions include replacing or realigning the igniter, checking the flame sense signal (sanding the sensor if coated or oxidized), checking the flue piping for blockage, proper length, elbows, and termination, and verifying proper induced draft blower performance.
U
ufaulknerAug 18, 2025
How to troubleshoot Goodman Furnace with no LED signal?
- T
  Tamara RothAug 18, 2025
  If your Goodman furnace fails to operate and the integrated control module diagnostic LED provides no signal, ensure that there is 115 and 24 volt power to the furnace integrated control module. Check the integrated control module fuse (3A) and replace it if necessary. Check for possible shorts in the 115 and 24 volt circuits and repair as needed. A faulty integrated control module may also be the cause, so replace it if necessary. The cause may be a manual disconnect switch being OFF, door switch open, or 24 volt wires improperly connected or loose, or a blown fuse or circuit breaker.
H
huntsabrinaAug 21, 2025
What does 6 flashes mean on a Goodman AMES800804B Furnace?
- C
  Chad ConleyAug 21, 2025
  If your Goodman furnace fails to operate and the integrated control module diagnostic LED is flashing six times, it could be due to flame rollout. Check the burners for proper alignment. Also, check the flue and air inlet piping for blockage, proper length, elbows, and termination, and correct as necessary. Check the rollout limit and replace it if necessary. Ensure the induced draft blower is performing properly, and replace it if necessary. The problem may also be due to misaligned burners, a blocked flue and/or air inlet pipe, or a failed induced draft blower. Check and correct any loose or improperly connected wiring. A short in the 24 volt AC control circuits or safety circuits, or a faulty rollout limit can also cause this issue. Tighten or correct any wiring connections.
R
robertwarrenAug 25, 2025
Goodman Furnace flashes 8 times, what does it mean?
- G
  gallowaymichaelAug 26, 2025
  If your Goodman furnace is not operating and the integrated control module diagnostic LED is flashing eight times, check and correct the wiring from the integrated control module to the igniter. Replace the igniter if it is bad. Check and correct the unit ground wire. If the issue persists, replace the integrated control module. This may be caused by an improperly connected igniter, a bad igniter, a poor unit ground, a poor burner ground, or a faulty integrated control module.
L
lewisrobertAug 28, 2025
What does 2 flashes mean on a Goodman Furnace?
- M
  Mary LeeAug 28, 2025
  If your Goodman furnace fails to operate and the integrated control module diagnostic LED is flashing twice, it could be due to induced draft blower pressure switch contacts sticking. In this case, replace the induced draft blower pressure switch. It could also be caused by shorts in the pressure switch circuit, which would require repairing the short.
K
Kevin WhiteSep 1, 2025
Goodman AMES800804B flashes 11 times, what does it mean?
- R
  rasmussenjessicaSep 2, 2025
  If your Goodman furnace is not operating and the integrated control module diagnostic LED is flashing eleven times, check and correct the wiring from the integrated control module to the igniter. Replace the igniter if it is bad. Also, check and correct the unit ground wire. This issue may arise from an improperly connected igniter, a bad igniter, or a poor unit ground, or a poor burner ground.
H
Heather HallSep 5, 2025
Goodman Furnace flashes 12 times, what should I do?
- V
  Virginia WallaceSep 5, 2025
  If your Goodman furnace is not operating and the integrated control module diagnostic LED is flashing twelve times, check and correct the wiring from the integrated control module to the inducer. Also, check for any blockage in the inducer and in the vent, and replace the inducer if necessary. Check and correct the unit ground wire. If the problem persists, replace the integrated control module. The cause may be improperly connected inducer, a bad inducer, a poor unit ground, or a faulty integrated control module.
E
Erin BarronSep 9, 2025
How to fix Goodman Furnace LED flashing continuously?
- W
  William HarrisSep 9, 2025
  If your Goodman furnace fails to operate and the integrated control module diagnostic LED is flashing continuously, review the wiring diagram to correct the polarity. Reverse the orange and gray wires going to the transformer. Verify proper ground. This issue arises when the polarity of the 115 or 24 volt power is reversed.

Goodman AMES800804B Specifications

General

Model Number	AMES800804B
Category	Furnace
Heating Capacity	80, 000 BTU
BTU Input	80, 000 BTU
BTU Output	64, 000 BTU
Efficiency Rating	80% AFUE
Stages	Single Stage
Blower Motor	Multi-Speed
Fuel Type	Natural Gas
Installation Type	Upflow/Horizontal
Heat Exchanger	Aluminized Steel
Vent Size	4 inches
Weight	120 lbs

Summary

Important Information

Safety Warnings and Precautions

Details critical warnings about fire, explosion, and carbon monoxide hazards.

System Operation

Normal Sequence of Operation

Abnormal Heating Operation

Describes common heating issues and their causes based on diagnostic LED codes.

Chimney and Venting Requirements

Gas Supply and Piping

Information on gas supply, piping, conversion kits, and pressure.

Electrical Connections and Wiring

Scheduled Maintenance

Annual Furnace Inspection

Key components for annual inspection to ensure proper operation and safety.

Filter Maintenance and Removal

Burner and Heating Performance Checks

Servicing

Electrical Checks and Diagnostics

Procedures for checking voltage, wiring, thermostats, and transformers.

Blower and Static Pressure Diagnostics

Limit Controls and Temperature Rise Testing

Gas System Checks and Adjustments

Procedures for checking gas valve, burners, orifices, and gas pressure.

Safety Device and High Altitude Checks

Ignition Control and Flame Sensor Diagnostics

Troubleshooting integrated ignition controls and flame sensors.

Troubleshooting

Symptom-Based Diagnostic Table

A table correlating symptoms, LED codes, causes, and corrective actions.

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