F0 238 High
Your boiler has detected an internal electrical problem with the component that controls the gas supply, causing the system to shut down for safety.
Technical description: Gas valve or control box error – gas valve coils need checking
Typical repair cost: £180-£450 (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 F0 238 — no call-out fees, no surprises.
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Parts commonly replaced
- Gas Valve
- Printed Circuit Board (PCB)
- Wire Harness
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