How do I fix Trane error code 22 Flashes?

If burners are firing erratically, turn off the furnace. Possible causes are improper burner combustion, inadequate gas pressure, or burner misalignment. Cleaning the burners may help if they’re dirty. Have an HVAC technician inspect the flame pattern, gas valve, and heat exchanger to diagnose the root cause.

Trane | Furnaces

Error Code 22 Flashes

Troubleshooting guide for the Trane Furnaces system fault 22 Flashes.

Disclaimer: This information is for general reference. Error codes can vary by model and production year. Always refer to your machine's specific manual and the information printed on the unit itself.

System Diagnosis

Flame problem sensed after ignition (flame instability). This indicates the burner flame itself is abnormal or not sustaining properly.

Potential Causes & Solutions

If burners are firing erratically, turn off the furnace.
Possible causes are improper burner combustion, inadequate gas pressure, or burner misalignment.
Cleaning the burners may help if they’re dirty.
Have an HVAC technician inspect the flame pattern, gas valve, and heat exchanger to diagnose the root cause.

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