Gas valve(s) High

Ideal Gas valve(s) Fault Code

Also written as GASVALVES — same fault.

The Ideal Gas valve(s) fault code means: your boiler is unable to safely control the flow of gas needed to stay lit, so it has shut down to avoid a potential hazard.. It appears on 2 Ideal models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: The diagnostics will indicate which gas valve (1 or 2) or solenoid of the double solenoid is at fault

What causes the Ideal Gas valve(s) fault?

This fault occurs when the boiler's internal computer detects that the gas valve is failing to open or close correctly during the ignition process. The most common reasons are a mechanical failure within the valve assembly, a burnt-out electrical coil, or a loose connection in the wiring harness that prevents the valve from receiving power.

Typical repair cost £250-£450 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Ideal models that show the Gas valve(s) fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Ideal Gas valve(s) fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026