BoilerFaultCodesWhat the manual says
Manufacturer manualPCB fault
From this model's manual
Verified against the Vokera/Vokera Linea 7 installation & service manual, page 32.
What causes this fault?
This fault occurs when the boiler's main control board suffers an internal electronic failure or loses communication with the rest of the components. The most common reasons are age-related wear to the board's circuitry or a sudden electrical surge that has damaged the sensitive microprocessors.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Related fault codes
All 17 fault codes on the Linea 28
Seeing a different code? Every code this model can display, in one place.