FLASH ON FLASH High
Your boiler's electronic control board has developed a fault, meaning the internal computer can no longer safely operate the heating system.
Technical description: Printed circuit board (PCB) error
Typical repair cost: £240-£450 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Protect yourself from future repair bills
A boiler cover plan would cover faults like FLASH ON FLASH — no call-out fees, no surprises.
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Parts commonly replaced
- Printed Circuit Board (PCB)
- PCB Fuse
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