E.04 – .00 High
Your boiler has lost communication with the internal gas control system, meaning it cannot safely release fuel to create a flame.
Technical description: Gas valve error – gas valve not detected.
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 E.04 – .00 — no call-out fees, no surprises.
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Parts commonly replaced
- Gas Valve
- Wiring Harness
- Printed Circuit Board (PCB)
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