Furnace indicates EEPROM or configuration error, may lock out after power-up

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

Corrupted EEPROM on main PCB, Incorrect PCB fitted, Power surge damage, Software configuration mismatch

Safety: Isolate power before accessing the PCB.

Power reset: Disconnect power for several minutes, then restore and observe if the error clears.
Check model label: Ensure the installed PCB matches the specific Baxi furnace model and gas type.
Professional reconfiguration: A Baxi service engineer may be able to reprogram or configure the PCB using service tools.
Replace PCB: If memory is corrupted, the main PCB will need replacement.

Professional Required 5/5

Main Control PCB

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