Ruud Furnace Repair Guide

Please note, the following Ruud Repair guide is for informational purposes only. Any servicing you attempt is at your own risk.

➤ A complete Ruud furnace repair guide, from how to replace your air filter, to troubleshooting and error codes, model numbers and more!

Ruud is regularly recognized as the maker of some of the most energy-efficient furnaces on the market, with many of their units receiving ENERGY STAR® certification.

This guide will provide you with some answers and potential fixes should your own Amana furnace run into any need for repair.

What's covered in this article?

What’s Wrong With Your Ruud Furnace?

Remember to always turn your furnace completely off before opening it up to look around or attempt any fix.

Is your furnace...	The problem might be your...	What's wrong?	How you can fix it:
Not heating?	Circuit Breaker/Fuse	The electrical system that powers your furnace has likely shorted.	Reset the circuit breaker that’s associated with your furnace.
	Igniter	The igniter might either be cracked or defective.	Check to see if the igniter is cracked and needs replacing. Otherwise, test it with a multimeter for continuity.
Cycling irregularly?	Thermostat	The thermostat might be adjusting incorrectly.	If your thermostat has an adjustable calibration scale, use it to adjust the heat anticipator. If this doesn’t work, replace the thermostat.
Not blowing hot air?	Blower Motor	Either the blower motor is burnt out, or the motor’s connect belt has snapped.	See if power is reaching the motor. If it is, but the motor isn’t running, replace the motor. If the motor runs but air doesn’t move, the connecting belt has snapped. Replace the belt.
Blowing too much air?	Control Board	Your furnace’s blower motor is continually being sent voltage due to a failed relay on the control board.	You will have to replace the control board.
	Thermostat	The contact that controls the blower motor on your thermostat may be sticking.	Use a multimeter to check for continuity. If it appears the thermostat is the issue, replace the part.
Starting and then stopping shortly after?	Flame Sensor	The flame sensor detects if a flame is present. If it is either defective or dirty, it will not be able to detect a flame.	If dirty, use a fine abrasive pad to clean the sensor. If faulty, replace the flame sensor.

An important but often overlooked maintenance task is remembering to change the air filter on your furnace regularly. When your filter is working properly, your furnace is able to function at peak performance.

An efficient filter also lengthens the life of your blower motor, and keeps the compressor coils from getting clogged.

How to Replace Your Air Filter

Open or slide the door panel to get access to your Amana furnace.
You will usually find the filter near where the cold air enters the unit, either in the cold air return duct or the entrance to the blower chamber (sometimes in both locations).
Slide out the old air filter and replace it with a new one.
Make certain that the “air flow” signifiers on the filter are facing the correct direction, towards the blower and away from the cold air.
Replace the panel or door to your furnace.

Additionally, it’s also important to regularly vacuum vents and check registers to make sure that they aren’t blocked. And it’s never a bad idea to clean inside your furnace, vacuum both in and around the unit’s blower to remove extra dust and debris that may have accumulated.

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Ruud Furnace Error Codes

Error Code	What this means	How to fix it
LED is steadily on	Normal fault detected.
Single LED flash	Failed to detect flame within three attempts for ignition, 1-hour lockout.	Reboot system.
Two LED flashes	The pressure switch is stuck open or induced draft blower problem detected.	Try to manually close the switch, replace the switch, or check blowers and vents for air pressure.
Three LED flashes	The limit switch is open, or the roll-out control is engaged.	Check for a restricted air vent, loose blower wheel, a defective blower, or a dirty air filter.
Four LED flashes	The pressure switch is stuck closed, or the switch won’t open.	Check for an obstruction in the pressure tubing.
Five LED flashes	N/A
Six LED flashes	Line and Neutral are reversed.	Control board or the furnace’s ground could be defective.
0	Standby
C	Compressor on (cooling or heat-pump heat).
H	Gas heat on.
F	Continuous fan on.
10	1 hour lockout.
11	Failed ignition.
12	Low flame sense.
13	Flame lost.
14	Unexpected flame.
20	Twinning fault.
22	Main limit open.
26	Line and neutral reversed.
33	MRLC (manual reset limit control) (aka roll-out) open.
55	Pressure switch stuck closed when should be open.
57	Press switch stuck open when should be closed.
61	Blower fault-blower unable to run.
93	Internal control fault.

When to call a professional to repair your Ruud furnace

While you can troubleshoot a number of issues on your own, you may want to contact a trained furnace technician should you be experiencing certain issues with your Amana unit.

If after your troubleshooting your furnace still isn’t producing any heat, is leaking or dripping, or is making strange noises (gurgling, banging, whistling, etc.), there might be some broken internal components within your unit. In this case, you will want to contact a trained technician to service your Amana furnace.

Also, if you notice that your Amana furnace is continuously switching itself off and on, you may want to call a technician. This may be a sign that something is not circulating properly within your furnace, possibly tripping up the sensors.

Who Should You Call?

Once you’ve begun experiencing issues with your Amana furnace, it can be difficult to know who to call.

It’s always a good idea to consult online consumer reviews to initially narrow down your local business options, but it’s important to understand that these can’t be used as de facto resources for making your final decision.

If you’re having trouble choosing the right furnace specialist, we can help! Refer to our own independent certification program to get free quotes from partner heating and cooling companies near you. We guarantee our certified partners meet specific criteria to ensure that Canadian homeowners are able to make informed decisions when it comes to their furnace needs.

Ruud’s Warranty Coverage

Aside from the warranty provided by whoever installed your unit, Amana furnaces are all covered by the same comprehensive warranty. This includes the following:

Limited lifetime warranty on the heat exchanger: if it fails during the first 10 years of ownership, Amana will replace the entire unit.
Limited 10-year warranty on all functional internal components

Ruud Furnace Model Numbers

ACVM97

ACSS96

AMVM97

ACVM970603BNB
ACVM970803BNB
ACVM970804CNB
ACVM971005CNB

ACSS960402BNA
ACSS960603BNA
ACSS960804CNA
ACSS961005CNA
ACSS961205DNA

AMVM970603BNB
AMVM970803BNB
AMVM970804CNB
AMVM971005CNB
AMVM971205DNB

AMEC96

AMVC96

ACEC96

AMEC960303ANA
AMEC960403ANA
AMEC960603ANA
AMEC960302BNA
AMEC960402BNA
AMEC960603BNB
AMEC960803BNA
AMEC960804CNA
AMEC961004CNA
AMEC961005CNA
AMEC961205DNA

AMVC960403BNB
AMVC960603BNB
AMVC960803BNB
AMVC960804CNB
AMVC961005CNB
AMVC961005DNB
AMVC961205DNB

ACEC960403BNA
ACEC960603BNA
ACEC960803BNA
ACEC961005CNA

ACVC96

AMSS92

AMSS96

ACVC960403BNB
ACVC960603BNB
ACVC960804CNB
ACVC961005CNB
ACVC961205DNB

AMSS920403ANA
AMSS920402BNA
AMSS920603BNA
AMSS920803BNA
AMSS920804CNA
AMSS920805CNA
AMSS921004CNA
AMSS921005CNA
AMSS921205DNA

AMSS960403ANA
AMSS960402BNA
AMSS960603BNA
AMSS960803BNA
AMSS960804CNA
AMSS960805CNA
AMSS961005CNA
AMSS961205DNA

ACSS92

ACSS920402BNA
ACSS920603BNA
ACSS920804CNA
ACSS921005CNA

Discontinued Ruud Furnace Models

Air Command 90

AMH95

AMVC95

GCCA045*
GCCA070*
GCCA090*
GCCA115*
GUCA045*
GUCA070*
GUCA090*
GUCA115*

AMH950453BX
AMH950703BX
AMH950704CX
AMH950904CX
AMH950905DX
AMH951155DX

AMVC950453BX
AMVC950704CX
AMVC950905DX
AMVC951155DX

AMV9

AMVM96