BoilerFaultCodesWhat the manual says
Manufacturer manualFailure to illuminate when button pressed - Change P.C.B.
What causes this fault?
This fault occurs when the internal electronic components responsible for registering button presses on the control panel have degraded or failed. The most common reason is a physical breakdown of the circuitry on the printed circuit board, which prevents the boiler from acknowledging the command to switch modes.
This issue is often discovered in late spring or early summer when homeowners attempt to switch off their central heating for the warmer months.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Avoid the next call-out bill
A cover plan would handle faults like Summer mode LED: no call-out fees, no surprise bills.
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