BoilerFaultCodesWhat the manual says
Manufacturer manualNo power, blown fuse, Internal fault
From this model's manual
Verified against the Compact installation & service manual.
What causes this fault?
This fault occurs when the electrical supply to the boiler is interrupted or the internal components fail to distribute power. The most common reason is a blown fuse in the external wall switch or a failure within the boiler's main control board. In some cases, a power surge or a short circuit in another part of the system can cause the unit to shut down completely to prevent damage.
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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