E19
EHC
Internal EEPROM / Configuration Error
Boiler shows E19, no heating or hot water, often after a power cut or surge.
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
Corrupted PCB firmware, Incorrect parameter settings, PCB hardware failure
How to Fix / Troubleshooting
Safety: Isolate power before removing the PCB cover.
User checks:
- Turn off the boiler at the mains for 5 minutes, then power back on to see if the error clears.
Engineer checks:
- Access the installer menu (if available) and verify configuration parameters match the EHC boiler model.
- Attempt a factory reset according to EHC service instructions.
- If E19 persists, replace the main PCB with the correct pre-programmed EHC board.
Record all settings before PCB replacement to simplify commissioning.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements