What does the Biasi E58 fault code mean?

Your boiler has too much water pressure inside the system after being topped up, which has caused it to lock out for safety.

How much does it cost to fix Biasi error code E58?

Typical repair cost for the Biasi E58 fault is £0-120 including labour.

Ensure the blue filling loop taps under the boiler are fully turned off.

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

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

Six most common causes of dropping pressure.

Step-by-step using the filling loop.

7 signs repair isn't worth it anymore.