High
E54 on Biasi Basica System 2022

Your boiler has tried to top itself up with water automatically but the pressure is still too low for it to start working.

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.

What the manual says

Manufacturer manual

Filling function of C.H. water completed, but pressure is lower than the minimum pressure for boiler filling.

From this model's manual
Verified against the Biasi Basica System 2022 installation & service manual, page 23.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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