BoilerFaultCodesThe 6 most common faults
Your boiler has failed to light the flame, which means it has shut down for safety to prevent gas from flowing without being burned.
Check if other gas appliances, like a hob, are working to ensure gas is reaching the propertyEnsure your gas meter has credit if you use a pre-payment meterPress and hold the 'Reset' button for 2-3 seconds to see if the boiler restarts
Your boiler has got too hot and has automatically shut down for safety to prevent internal damage.
Check that all radiator valves are open to allow water to flow.Ensure there is enough pressure in the system (between 1 and 1.5 bar).Turn the selector switch to 'Reset' for 5 seconds and then back to its original position.
Your boiler has detected that there is not enough water pressure or flow to operate safely and has stopped working as a result.
Check the pressure gauge on the front of the boiler; it should be between 1 and 1.5 bar.If the pressure is too low, use the filling loop underneath the boiler to top up the water.Ensure all radiator valves and isolation valves are fully open.Restart the boiler once the correct pressure is reached.
Your boiler is overheating because the water is not circulating quickly enough between the internal pipes.
Check that your silver central heating valves under the boiler are fully openEnsure all radiator valves (TRVs) are turned to the highest settingCheck the boiler pressure is between 1 and 1.5 bar on the gaugeBleed all radiators to remove trapped air
Your boiler has stopped working because the water isn't moving through the system properly, causing it to overheat.
Check that your boiler pressure is between 1 and 1.5 bar on the gaugeEnsure all radiator valves and isolation valves under the boiler are fully openGently bleed your radiators to remove any trapped air pockets
Your boiler has stopped working because the water pressure is too low for it to run safely.
Locate the filling loop (usually a silver flexible hose) underneath the boiler.Slowly open the valves until you hear water flowing and the pressure gauge reaches between 1 and 1.5 bar.Close both valves tightly and restart the boiler.
on the Biasi Inovia 2020
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