F70
Protherm
Configuration / Coding Plug Error
F70 error, display and main PCB configuration mismatch
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
Incorrect display board fitted, Wrong coding plug, PCB replaced without proper configuration, Corrupted configuration data
How to Fix / Troubleshooting
Safety first: Disconnect power before changing boards or coding plugs.
- Verify part numbers: Ensure the display and main PCB are correct for the specific Protherm water heater model.
- Check coding plug: Some models use a coding resistor or plug; verify it is present and correctly seated.
- Reconfigure PCB: Using Protherm service tools, load the correct configuration for the model and gas type.
- Replace incorrect parts: If incompatible boards were installed, replace them with the correct versions.
Warning: Incorrect configuration can lead to unsafe operation; follow Protherm service documentation precisely.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Coding Plug / Main Control PCB
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements