High
Section C on Baxi 105e

Your boiler is struggling to circulate water properly, likely due to low pressure or a sticking internal component that prevents hot water from reaching your radiators or taps.

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

CH system pressure 0.5 to 1.5 bar, automatic air vent closed, or primary flow valve diaphragm damaged

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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