BoilerFaultCodesThe 6 most common faults
Your boiler is failing to light the gas or cannot detect that a flame has been successfully started.
Check if other gas appliances in your home, like a hob, are working to ensure gas supply.Ensure your gas meter has credit and the isolation valve is open.Press and hold the 'R' Reset button for 2-3 seconds to see if the boiler restarts.
Your boiler has detected that it is getting too hot and has automatically shut down to prevent damage or safety issues.
Check that your radiator valves are open and not turned to zero.Verify that the boiler pressure gauge is between 1 and 1.5 bar; top up if necessary.Try resetting the boiler by turning the control knob to the 'R' position for a few seconds.
Your boiler has detected that the water pressure is too low for it to operate safely and has shut itself down.
Locate the filling loop (usually a silver flexible hose) underneath the boiler.Slowly open the one or two small taps on the hose until you hear water moving.Watch the pressure gauge until it reaches between 1.0 and 1.5 bar, then close the taps tightly.
Your boiler has safety-locked itself because it is having trouble detecting or maintaining a flame.
Check that your gas pre-payment meter has credit (if applicable)Check that other gas appliances in your home, like a hob, are working correctlyPress and hold the 'Reset' button for five seconds to attempt to restart the boiler
Your boiler has sensed that the water returning from your radiators is hotter than the water leaving the boiler, which usually means the water isn't flowing through the system correctly.
Check that all radiator valves are fully openEnsure the boiler pressure is between 1 and 1.5 bar on the gaugeReset the boiler using the control knob to see if the error clears
Your boiler is failing to light the gas or keep the flame burning, which means your heating and hot water have stopped working.
Check if other gas appliances, like a cooker, are working to ensure gas is reaching your home.Verify that your gas meter has credit and the isolation valve is open.Press the Reset button on the boiler control panel once to see if the system restarts.
on the Biasi Rinnova Adaptive Combi
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