BoilerFaultCodesYour boiler's main control computer is missing a vital activation chip, which means the system cannot start up or provide any heat.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Boiler Chip Card (BCC) not fitted
What causes this fault?
This fault occurs when the boiler's main control board cannot detect the unique memory chip that tells it how to operate safely. The most common reason is that the chip card has vibrated loose, failed electronically, or was not correctly transferred when a technician replaced the circuit board.
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 F0 — 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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