BoilerFaultCodesYour boiler's main control board has been set up with incorrect configuration settings, meaning it doesn't know which specific model it is supposed to be.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Jumper tag fault
What causes this fault?
This fault occurs when the boiler's internal computer lacks the specific identity settings required to operate the hardware safely. It is usually caused by a component failure on the control board or occurs immediately after a repair if the new parts haven't been configured with the correct plug-in coding chips.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like AL55 — no call-out fees, no surprises.
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