E55 High
Your boiler's internal computer has detected that its gas and air settings need recalibrating to ensure it burns fuel efficiently and safely.
Technical description: Calibration required
Typical repair cost: £100-250 (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 E55 — no call-out fees, no surprises.
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Parts commonly replaced
- Gas Valve
- Printed Circuit Board (PCB)
- Electrodes
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