BoilerFaultCodesThe 6 most common faults
Your boiler has failed to light the gas flame and has shut down as a safety precaution.
Check that your gas emergency control valve is in the 'on' positionVerify that other gas appliances, like a cooker, are working to ensure gas supplyPress the Reset button on the boiler control panel for 2 seconds
Your boiler has shut down because it sensed it was getting too hot, triggering a safety switch to prevent damage.
Check that your radiator valves are open and not turned to zeroEnsure there is enough water pressure in the system (typically between 1 and 1.5 bar)Press the 'Reset' button on the boiler control panelCheck for any obvious obstructions to the external flue pipe
Your boiler has detected that the water pressure is too low or isn't circulating properly, which prevents it from heating up safely.
Locate the pressure gauge on the front of the boiler and check if the needle is below 1.0 bar (typically in the red zone).Find the internal or external filling loop (braided silver hose) underneath the boiler.Slowly open the valve(s) until you hear water moving and the pressure gauge rises to 1.5 bar, then close the valves tightly.
Your boiler is heating up too quickly, which usually means the water isn't moving through the system properly.
Check that all radiator valves are fully openCheck that the boiler pressure is between 1.0 and 1.5 bar on the gaugeBleed your radiators to remove any trapped air
Your boiler is overheating because the water inside is reaching temperatures that are too high for safe operation.
Check that all radiator valves are fully open to allow water to circulate.Ensure the boiler pressure is between 1.0 and 1.5 bar on the pressure gauge.Check for any blockages in the system and bleed your radiators to remove trapped air.
Your boiler is having trouble talking to your external smart thermostat or controller, which stops it from receiving heating instructions.
Check that your wall thermostat or smart hub is powered on and has working batteries.Restart your internet router if you are using a Wi-Fi-connected heating system.Turn the boiler power switch off and back on to refresh the connection.
on the Biasi Basica System 2022
Based on parts cited in our fault code database. Your engineer will confirm what's actually needed after diagnosis.
Call a Gas Safe engineer if…
- You can smell gas or see signs of a leak
- The Biasi shows an Emergency or High severity code
- The boiler keeps locking out after repeated resets
- You've tried the DIY checks and the fault hasn't cleared
- There's visible water leaking from the boiler
- The flame is yellow or orange instead of blue