BoilerFaultCodesYour boiler has stopped working because it cannot safely vent waste gases or confirm that the internal fan is running correctly.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Air fault, pressure switch, no power to fan
What causes this fault?
This fault happens when the boiler's internal components can't confirm that harmful waste gases are being safely pushed out of the flue. It usually occurs because the fan has failed to start or the air pressure switch is unable to detect the correct airflow required for ignition. Without this safety confirmation, the boiler will refuse to light to prevent a buildup of dangerous fumes.
This fault can sometimes occur during periods of high winds, which can create back-pressure in the flue and interfere with the air pressure switch readings.
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 02 — no call-out fees, no surprises.
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