Boiler shows CE 207, communication error between user interface and main PCB.

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.

Possible Causes

Loose ribbon cable between PCB and display, Faulty user interface board, Faulty main PCB, Moisture ingress on control connections

Safety first: Isolate power before removing the front panel or touching any electronics.

Power cycle: Turn off the boiler at the fused spur for 30 seconds, then turn back on and see if the error clears.
Check for moisture: Look for signs of condensation or leaks around the control panel area.
Engineer tasks: An engineer should reseat or replace the ribbon cable, test the user interface board, and replace the main PCB if communication cannot be restored.

Hard 4/5

Main Control PCB

Check Price on Amazon

We may earn a commission from links on this page.