BoilerFaultCodesYour boiler's main control board has been replaced or reset but hasn't been programmed with the specific settings required to run your heating and hot water.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Contact Installer
What causes this fault?
This fault occurs when a newly installed circuit board or one that has been reset does not yet know which specific boiler model it is controlling. Because the same board is used across several different models, it remains in a standby state until an engineer enters a unique code to activate the correct heating and hot water settings.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like Spare PCB Not Set — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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