BoilerFaultCodesThe 6 most common faults
Your boiler has stopped working because it cannot light the burner or detect that a flame has started.
Check if your gas supply is turned on or if other gas appliances are workingPress and hold the 'Reset' button for five secondsEnsure your prepaid gas meter has sufficient credit
Your boiler has switched itself off because it has detected that the internal water temperature has become too hot.
Locate the reset button on the control panelPress and hold the reset button for several seconds to clear the lockoutCheck that all radiator valves are open and there is enough pressure in the system
Your boiler is failing to light the gas flame despite several attempts, meaning it cannot provide heat or hot water.
Check that your gas stopcock or meter valve is fully open and you have credit on your meter.Verify that other gas appliances in your home, such as a hob, are working correctly.Press and hold the 'Reset' button for five seconds to see if the boiler restarts.
Your boiler has shut down because a sensor has detected that the water leaving the unit to heat your radiators is getting too hot.
Check that all your radiator valves are fully openEnsure the boiler pressure gauge is between 1.0 and 1.5 barPress the Reset button once to see if the fault clears
Your boiler has detected that the water returning from your radiators is getting too hot, which often points to a circulation problem or a faulty sensor.
Check that all radiator valves (TRVs) are fully openEnsure the boiler pressure gauge is between 1.0 and 1.5 barBleed all radiators to remove trapped airReset the boiler to see if the fault clears
Your boiler is having trouble communicating with your thermostat or remote controller, meaning it can't receive the signal to turn the heating on.
Check if the batteries in your room thermostat or remote control need replacingEnsure the wireless receiver or thermostat is within range and hasn't been movedTurn the boiler power off at the fused spur, wait 30 seconds, and turn it back on to reset the connection
on the Biasi Antares 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