Amana Furnace Repair Guide
What’s Wrong With Your Amana Furnace?
| Is your furnace... | The problem might be your... | What's wrong? | How you can fix it: |
|---|---|---|---|
| Not heating? | Circuit Breaker/Fuse | Most likely, either the electrical system providing your furnace’s power has shorted or the power switch has blown. | Try resetting your furnace’s circuit breaker. If it has blown, you will need to replace it. |
| Igniter | The furnace’s igniter might either be cracked or faulty. | Check the part for cracks, if it is then replace the igniter. If it isn’t cracked, use a multimeter to test for continuity. | |
| Cycling irregularly? | Thermostat | Your thermostat might be adjusting incorrectly, causing the furnace to cycle on and off too often. | If your thermostat has an adjustable calibration scale, adjust the heat anticipator. If this does not stabilize the unit, you may have to replace the thermostat. |
| Not blowing hot air? | Blower Motor | Your blower motor may have completely burnt out. If this doesn’t seem to be the case, then the connecting belt may have simply broken. | Test to see if power is reaching the motor. If it does, but isn’t running, the motor has likely failed. If the motor runs but air doesn’t move, the connecting belt has probably broken. You’ll have to replace the belt. |
| Blowing too much air? | Control Board | The control board regulates the amount of voltage that reaches each functioning part. If the relay that controls the blower motor has failed, it will continually send voltage to the motor. | Replace the control board. |
| Thermostat | The contact that controls the blower motor on your thermostat may be stuck closed, causing the blower motor to run continuously. | Use a multimeter to check for continuity. If it appears the thermostat is the issue, replace it. | |
| Leaking water? | Drain Pipe | ||
| Starting and then stopping shortly after? | Flame Sensor | Your furnace’s flame sensor monitors the burner, detecting whether a flame is present. If it is either defective or dirty, it will not be able to detect a flame. | If dirty, clean the sensor using a fine abrasive pad. If faulty, replace the flame sensor. |
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Amana Furnace Error Codes
| Error Code | What this means | How to fix it |
|---|---|---|
| LED flashing like a heartbeat | Control has 24 VAC power | N/A |
| Two LED flashes | Unit’s pressure switch didn’t open | Check for an obstruction in the pressure tubing |
| Three LED flashes | Unit’s pressure switch didn’t close or reopened | Check for: excessive wind; if it’s the proper vent size; defective inducer motor; defective pressure switch; inadequate combustion air supply; disconnected or obstructed pressure tubing; or restricted vent |
| Four LED flashes | Limit circuit fault: either a limit or flame rollout is open | Check for: restricted vent; loose blower wheel; excessive wind; dirty air filter; or defective blower |
| Five LED flashes | An abnormal flame proving signal, the flame is likely proved while the gas valve is de-energized | Check for a leaky gas valve or a gas valve that is stuck open |
| Six LED flashes | Failure to ignite or the flame sensor was lost while running | Check for: an ungrounded flame sensor; defective hot surface ignitor; control ground continuity; inadequate flame carryover; or rough ignition |
| Seven LED flashes | Limit circuit lockout | A lockout will occur if the limit or flame rollout is open for longer than 3 minutes. Control will auto-reset after 3 hours. |
| Eight LED flashes | Gas heating lockout, control won’t auto-reset | Check for a miswired gas valve or a defective control valve |
| Ten LED flashes | Polarity is reversed | Review instructions to correct polarity |
| 1 + 2 | Blower is on after power up | Occurs if the unit is powered up during a call for heat or opens while the blower is on delay |
| 6 + 1 | Ignition lockout | Control will auto-reset after 3 hours |
| LED is off | Secondary voltage fuse is open | Check whether the door switch isn’t closed or for a short circuit |
| LED is on | Control circuitry lockout | Will auto-reset after 1 hour |
| LED is solid | Gas valve relay is stuck while open, flame sense circuit failure, or software-check error | Reset power to clear the lockout and then replace control if status code repeats itself |
When to call a professional to repair your Amana furnace
Who Should You Call?
Amana’s Warranty Coverage
- 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
Amana Furnace Model Numbers
- ACSS920402BNA
- ACSS920603BNA
- ACSS920804CNA
- ACSS921005CNA
Discontinued Amana Furnace Models
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