E01 High
Your boiler's main internal computer has encountered a processing error and cannot safely operate.
Technical description: Internal control fault
Typical repair cost: £250-450 (including labour)
DIY fix possible
Press the reset button on the control panel onceTurn the main power switch to the boiler off, wait 30 seconds, and turn it back onEnsure the boiler has not been subject to a recent power surge or lightning strike
Protect yourself from future repair bills
A boiler cover plan would cover faults like E01 — no call-out fees, no surprises.
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Parts commonly replaced
- Main PCB (Printed Circuit Board)
- Control Interface
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