High
Air Pressure Fault on Worcester Bosch 26 CDi Xtra

Your boiler is struggling to clear exhaust fumes or draw in fresh air, so it has safely shut down to prevent any risk.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

Fan operation; Air pressure switch C and NO terminals; Silicon tubes condition; Flue restrictions; Condensate drain.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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