BoilerFaultCodesYour boiler has stopped working because it cannot properly communicate with the internal valve that controls the gas flow.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Feedback from the modulating gas valve is too low
What causes this fault?
This fault occurs when the boiler's main computer loses the precise electrical signal it needs to manage the gas flow safely. The most common reason is an internal electronic failure within the gas valve itself or a loose connection in the wiring that links the valve to the control board. Without this constant 'heartbeat' feedback, the boiler shuts down as a safety precaution because it cannot verify exactly how much fuel is being used.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like 2925 V — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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