Carrier Error Code 22: Abnormal Flame
Warning: A Carrier 22 error code indicates an abnormal flame, which could mean a gas leak or carbon monoxide risk. Shut down the unit immediately.
How to Fix Carrier Code 22
- Step 1: Shut off the unit immediately at the breaker.
- Step 2: If you smell gas, evacuate your home and call the gas company from a safe location.
- Step 3: Contact a qualified HVAC technician to inspect and repair the system.
How to Reset Carrier Code 22
- Turn off the furnace power switch, usually located on or near the unit.
- Turn off the circuit breaker for the furnace. Wait 30 seconds.
- Restore power at the breaker and flip the furnace switch back on.
- Set the thermostat to call for heat. If the error code returns after 2-3 ignition attempts, the fault requires repair.
What does 22 mean?
The Carrier 22 error code, often displayed as a blinking LED pattern on your furnace or HVAC system, signals that the system has detected an abnormal flame during operation. This could mean the flame is unstable, weak, or present when it shouldn't be. This is a serious issue because it could indicate a problem with gas combustion, potentially leading to a gas leak or carbon monoxide buildup.
When this error occurs, the system typically shuts down as a safety precaution. Do not attempt to restart the system until the problem has been diagnosed and repaired by a qualified HVAC technician. Ignoring this error could lead to dangerous conditions in your home.
Affected Models
- Performance Series Furnace
- Comfort Series Furnace
- Infinity Series Furnace
- Performance Series
- Base Series Furnace
- Performance Boost Furnace
- Performance Boost 95 Furnace
- WeatherMaker 8000
- WeatherMaker 9300
- Infinity 80
- Performance Series Furnace
- Comfort Series Furnace
- Infinity Series Furnace
- WeatherMaker Furnace
- 24ABC6 Air Conditioner
- 25HBC5 Heat Pump
- Performance Series Heat Pump
- Infinity Series
- Base Series
- Comfort Series
- Infinity Series Heat Pump
- Comfort Series Heat Pump
- Infinity 20 Heat Pump with Greenspeed Intelligence
- Comfort 80 Gas Furnace
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| Flame Sensor | KH42LZ010 | — |
| Gas Valve | EF32CW175 | — |
| Ignition Control Board | — | — |
Related Codes on Same Models
| Code | Description | Severity |
|---|---|---|
| 11 | No Previous Error | Info |
| 12 | Blower On After Power Up | Warning |
| 13 | Limit/Rollout Fault | Critical |
| 14 | Ignition Lockout | Critical |
| 21 | Gas Heating Lockout | Critical |
| 23 | Pressure Switch Fault | Warning |
| 24 | Secondary Voltage Fuse | Warning |
| 31 | High Stage Pressure Fault | Warning |
| 32 | Low Flame Sense | Warning |
| 33 | Limit/Rollout Switch Lockout | Critical |