Carrier Heat Pump Error Code 22: How to Fix It

Q: How often should I clean my Carrier heat pump flame sensor?

The flame sensor should be cleaned annually as part of regular maintenance, or whenever error code 22 appears. Heavy use or dusty environments may require more frequent cleaning.

Q: Can I bypass the flame sensor temporarily?

Never bypass or disable the flame sensor as it's a critical safety component. Operating without a functioning flame sensor can create dangerous conditions including gas leaks or carbon monoxide production.

Q: What causes the flame sensor to get dirty?

Normal combustion creates carbon deposits on the flame sensor over time. Poor air filtration, dusty conditions, or incomplete combustion can accelerate sensor contamination.

Q: How do I know if my flame sensor needs replacement?

Replace the flame sensor if it's cracked, corroded beyond cleaning, or if error code 22 persists after thorough cleaning. A damaged sensor cannot be repaired and must be replaced.

Q: Is error code 22 dangerous?

Error code 22 itself isn't immediately dangerous as it prevents unsafe operation, but ignoring it can lead to heating system failure. The underlying flame sensing issue should be addressed promptly for safe operation.

Abstract

Carrier error code 22 indicates an abnormal flame proving signal, which means your heat pump's flame sensor cannot properly detect the burner flame. This safety feature protects your system from unsafe operation and typically requires cleaning or replacing the flame sensor to restore normal heating function.