BoilerFaultCodesThe 6 most common faults
Your boiler has failed to ignite or has lost its flame, which means it has locked itself out for safety.
Check that your gas supply is turned on and other gas appliances have fuel.Press and hold the Reset button for 2 to 3 seconds until the error clears.Ensure the condensate pipe (the plastic pipe outside) isn't frozen if it is currently winter.
Your boiler has sensed that it is becoming too hot and has shut itself down as a safety precaution.
Wait 15 minutes for the boiler to cool down fully.Turn the selector switch to the 'Reset' position for a few seconds, then back to the heater/tap icon.Check that your radiator valves are open and that the system pressure is between 1 and 1.5 bar.
Your boiler has detected low water pressure in the system, which prevents it from firing up to provide heating or hot water.
Locate the filling loop (the flexible silver hose) underneath the boiler.Slowly open the valve or valves on the filling loop until you hear water entering the system.Monitor the pressure gauge until it reaches between 1.0 and 1.5 bar, then close the valves tightly.Press the reset button to clear the fault code.
Your boiler has detected that the water pressure is too low to operate safely.
Locate the filling loop valves underneath the boiler.Slowly open both valves to allow water into the system.Watch the pressure gauge and close the valves once it reaches between 1 and 1.5 bar.Ensure both valves are fully closed and reset the boiler if necessary.
Your boiler has failed to light the gas flame and has locked itself out for safety.
Check that your gas supply is turned on and other gas appliances are working.Press and hold the Reset button for 2 seconds then release.Wait for the boiler to attempt to restart; repeat up to three times if it fails.
Your boiler has switched itself off because it has detected that it is getting too hot, likely due to a circulation problem or a temporary blockage.
Check that all radiator valves are fully open to allow water to flow.Ensure the system pressure is between 1.0 and 1.5 bar on the pressure gauge.Try to reset the boiler by turning the control knob to the 'R' position for a few seconds and then back to 'On'.
on the Biasi Riva Advance M96.24SM
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