E15 High
Your boiler has detected an internal communication error with the part that controls the gas supply, meaning it cannot ignite safely to provide heat or hot water.
Technical description: Gas valve command fault.
Typical repair cost: £180-350 (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 E15 — no call-out fees, no surprises.
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Parts commonly replaced
- Gas Valve
- Printed Circuit Board (PCB)
- Wiring Harness
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