Maytag Furnaces Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
Advertisements
1 FLASH
Furnace will not start; inducer motor does not run; LED status light flashes once repeatedly.
Ignition Failure Lockout
2 FLASHES
Furnace attempts to start but shuts down quickly; LED status light flashes twice repeatedly.
Pressure Switch Stuck Closed
3 FLASHES
Furnace starts inducer but will not ignite; LED status light flashes three times repeatedly.
Pressure Switch Stuck Open
4 FLASHES
Furnace lights but shuts off quickly; LED status light flashes four times repeatedly.
Open High Limit Switch
5 FLASHES
Furnace starts but shuts down; LED status light flashes five times repeatedly.
Flame Sensed With Gas Valve Off
6 FLASHES
Furnace cycles on and off frequently; LED status light flashes six times repeatedly.
Pressure Switch Cycle Lockout
7 FLASHES
Furnace will not start; LED status light flashes seven times repeatedly.
Gas Valve Circuit Fault
8 FLASHES
Furnace starts but shuts down; LED status light flashes eight times repeatedly.
Low Flame Sense Signal
9 FLASHES
Furnace will not run; LED status light flashes nine times repeatedly.
Reversed Line Polarity or Ground Fault
LOCKOUT
Furnace stops trying to ignite and will not respond for about an hour unless power is cycled; display or LED indicates lockout.
Ignition Retry Lockout
NO LED
Furnace completely dead; no LED lights, no blower, no inducer operation.
No Power to Furnace
OPEN AUX LIMIT
Furnace shuts down intermittently; auxiliary limit open indicated on diagnostic chart.
Auxiliary Limit Switch Open
OPEN DOOR
Furnace will not run; LED indicates door open or no blower door switch engagement.
Blower Door Safety Switch Open
OPEN LIMIT
Furnace burners shut off and blower continues to run; diagnostic label or display indicates open limit.
High Temperature Limit Open
OPEN ROLLOUT
Furnace shuts down immediately after ignition attempt; rollout switch trip indicated on diagnostic chart.
Flame Rollout Safety Trip
RAPID FLASH
Furnace will not run; LED status light flashes rapidly with no distinct count.
Line Voltage or Internal Control Fault
STEADY ON
Furnace does not respond to thermostat; LED status light is on solid with no flashes.
Normal Operation / No Fault (Control Idle)
Symptom
Furnace blower runs continuously even when there is no call for heat or cool.
Blower Stuck in Continuous Mode
Symptom
Furnace cabinet sweats or shows rust and corrosion, especially on high-efficiency models.
Condensation and Corrosion
Symptom
Furnace cycles on and off with loud clicking from the control board but burners do not stay lit.
Intermittent Flame Sensing
Symptom
Furnace emits a strong metallic or electrical burning smell during operation.
Overheating Electrical Component
Symptom
Furnace frequently trips the household circuit breaker.
Electrical Overload or Short Circuit
Symptom
Furnace inducer motor hums but does not start spinning, preventing ignition.
Seized or Failed Inducer Motor
Symptom
Furnace inducer motor runs but there is a loud whistling or whooshing noise at the vent pipes.
Vent Airflow Restriction or Resonance
Symptom
Furnace is running but some rooms are too cold while others are too warm.
Uneven Heating / Airflow Imbalance
Symptom
Furnace is very noisy during operation, with rattling, vibrating, or grinding sounds.
Mechanical Vibration or Blower Noise
Symptom
Furnace makes a loud banging or booming noise at startup when burners ignite.
Delayed Ignition
Symptom
Furnace produces a burning dust smell when it first starts for the season.
Dust Burn-Off
Symptom
Furnace runs but does not produce warm air; blower operates continuously with cool or room-temperature air from vents.
Burners Not Igniting
Symptom
Furnace runs but gas consumption seems unusually high and house heats too quickly.
Overfiring or Oversized Furnace
Symptom
Furnace short cycles, turning on and off frequently without reaching the thermostat setpoint.
Short Cycling
Symptom
Furnace starts and runs for a few minutes, then shuts off and displays no obvious error code.
Overheating and Limit Cycling
Symptom
Furnace starts normally but shuts off when the blower comes on, then tries again.
Flame Disturbance When Blower Starts
Symptom
Thermostat calls for heat but furnace does nothing; no inducer, no blower, LED shows normal idle.
Open Thermostat Circuit
Symptom
Water is leaking around the base of a high-efficiency Maytag furnace.
Condensate Leak
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| 1 FLASH |
Furnace will not start; inducer motor does not run; LED status light flashes once repeatedly.
|
Ignition Failure Lockout | View Details |
| 2 FLASHES |
Furnace attempts to start but shuts down quickly; LED status light flashes twice repeatedly.
|
Pressure Switch Stuck Closed | View Details |
| 3 FLASHES |
Furnace starts inducer but will not ignite; LED status light flashes three times repeatedly.
|
Pressure Switch Stuck Open | View Details |
| 4 FLASHES |
Furnace lights but shuts off quickly; LED status light flashes four times repeatedly.
|
Open High Limit Switch | View Details |
| 5 FLASHES |
Furnace starts but shuts down; LED status light flashes five times repeatedly.
|
Flame Sensed With Gas Valve Off | View Details |
| 6 FLASHES |
Furnace cycles on and off frequently; LED status light flashes six times repeatedly.
|
Pressure Switch Cycle Lockout | View Details |
| 7 FLASHES |
Furnace will not start; LED status light flashes seven times repeatedly.
|
Gas Valve Circuit Fault | View Details |
| 8 FLASHES |
Furnace starts but shuts down; LED status light flashes eight times repeatedly.
|
Low Flame Sense Signal | View Details |
| 9 FLASHES |
Furnace will not run; LED status light flashes nine times repeatedly.
|
Reversed Line Polarity or Ground Fault | View Details |
| LOCKOUT |
Furnace stops trying to ignite and will not respond for about an hour unless power is cycled; display or LED indicates lockout.
|
Ignition Retry Lockout | View Details |
| NO LED |
Furnace completely dead; no LED lights, no blower, no inducer operation.
|
No Power to Furnace | View Details |
| OPEN AUX LIMIT |
Furnace shuts down intermittently; auxiliary limit open indicated on diagnostic chart.
|
Auxiliary Limit Switch Open | View Details |
| OPEN DOOR |
Furnace will not run; LED indicates door open or no blower door switch engagement.
|
Blower Door Safety Switch Open | View Details |
| OPEN LIMIT |
Furnace burners shut off and blower continues to run; diagnostic label or display indicates open limit.
|
High Temperature Limit Open | View Details |
| OPEN ROLLOUT |
Furnace shuts down immediately after ignition attempt; rollout switch trip indicated on diagnostic chart.
|
Flame Rollout Safety Trip | View Details |
| RAPID FLASH |
Furnace will not run; LED status light flashes rapidly with no distinct count.
|
Line Voltage or Internal Control Fault | View Details |
| STEADY ON |
Furnace does not respond to thermostat; LED status light is on solid with no flashes.
|
Normal Operation / No Fault (Control Idle) | View Details |
| – |
Furnace blower runs continuously even when there is no call for heat or cool.
|
Blower Stuck in Continuous Mode | View Details |
| – |
Furnace cabinet sweats or shows rust and corrosion, especially on high-efficiency models.
|
Condensation and Corrosion | View Details |
| – |
Furnace cycles on and off with loud clicking from the control board but burners do not stay lit.
|
Intermittent Flame Sensing | View Details |
| – |
Furnace emits a strong metallic or electrical burning smell during operation.
|
Overheating Electrical Component | View Details |
| – |
Furnace frequently trips the household circuit breaker.
|
Electrical Overload or Short Circuit | View Details |
| – |
Furnace inducer motor hums but does not start spinning, preventing ignition.
|
Seized or Failed Inducer Motor | View Details |
| – |
Furnace inducer motor runs but there is a loud whistling or whooshing noise at the vent pipes.
|
Vent Airflow Restriction or Resonance | View Details |
| – |
Furnace is running but some rooms are too cold while others are too warm.
|
Uneven Heating / Airflow Imbalance | View Details |
| – |
Furnace is very noisy during operation, with rattling, vibrating, or grinding sounds.
|
Mechanical Vibration or Blower Noise | View Details |
| – |
Furnace makes a loud banging or booming noise at startup when burners ignite.
|
Delayed Ignition | View Details |
| – |
Furnace produces a burning dust smell when it first starts for the season.
|
Dust Burn-Off | View Details |
| – |
Furnace runs but does not produce warm air; blower operates continuously with cool or room-temperature air from vents.
|
Burners Not Igniting | View Details |
| – |
Furnace runs but gas consumption seems unusually high and house heats too quickly.
|
Overfiring or Oversized Furnace | View Details |
| – |
Furnace short cycles, turning on and off frequently without reaching the thermostat setpoint.
|
Short Cycling | View Details |
| – |
Furnace starts and runs for a few minutes, then shuts off and displays no obvious error code.
|
Overheating and Limit Cycling | View Details |
| – |
Furnace starts normally but shuts off when the blower comes on, then tries again.
|
Flame Disturbance When Blower Starts | View Details |
| – |
Thermostat calls for heat but furnace does nothing; no inducer, no blower, LED shows normal idle.
|
Open Thermostat Circuit | View Details |
| – |
Water is leaking around the base of a high-efficiency Maytag furnace.
|
Condensate Leak | View Details |
No matching codes found
Advertisements