High
Faulty primary circuit on Biasi Riva Compact 24S

Your boiler has lost water pressure or the water isn't moving through the system properly, which has triggered a safety shutdown to prevent overheating.

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

No water or absence of flow

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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