H22
Panasonic
Abnormal Flame Detection / Flame Rod Error
Heater displays H22; may be associated with abnormal combustion or flame detection.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Contaminated flame rod, Poor grounding of burner, Loose flame rod wiring, Defective flame detection circuit on PCB
How to Fix / Troubleshooting
Safety: Turn OFF power and gas before accessing the burner area. Allow the unit to cool.
- 1. Reset and test: Power cycle the unit and attempt operation again.
- 2. Clean flame rod (qualified persons):
- Remove the front cover.
- Locate the flame rod near the burner.
- Gently clean the rod with fine abrasive pad to remove soot and oxidation.
- 3. Check grounding:
- Ensure the burner assembly and chassis ground connections are tight and free of corrosion.
- 4. Inspect wiring:
- Check the flame rod lead for cracks or loose connectors.
- 5. If H22 persists: The flame rod or PCB flame detection circuit may be faulty and should be replaced by an authorized technician.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Flame Rod Sensor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements