High
61 on Alpha Evoke 10 / 18

Your boiler is struggling to push water through the central heating system because something is blocking the flow or there is air trapped in the pipes.

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

Restricted CH flow due to air or a circuit restriction

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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