FD 231 High
Your boiler has lost its connection to the main electrical supply or has detected a significant power interruption.
Technical description: Mains power fault – electrical power interruption
Typical repair cost: £100-350 (including labour)
DIY fix possible
Check if there is a general power cut in your streetInspect your home's consumer unit (fuse box) to see if a circuit breaker has trippedEnsure the boiler's isolation switch (fused spur) is turned onPress the Reset button on the boiler control panel
Protect yourself from future repair bills
A boiler cover plan would cover faults like FD 231 — no call-out fees, no surprises.
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Parts commonly replaced
- Main PCB (Printed Circuit Board)
- Internal Fuse
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