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 detected an issue with its internal computer board or the electrical power being supplied to it.
Turn the boiler power off at the fused spur switchWait for 60 secondsTurn the power back on and press the Reset button
Your boiler has detected that water is not circulating correctly through the system, which is preventing it from heating up safely.
Check the pressure gauge on the front of the boiler and ensure it is between 1.0 and 1.5 bar.If the pressure is too low, use the filling loop underneath the boiler to top it up.Ensure all radiator valves are open and that the pump is not making any unusual grinding noises.Reset the boiler by turning the selector switch to the 'R' position for a few seconds.
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
Avoid the next call-out bill
Monthly cover means no unexpected bills when your boiler breaks down.
Affiliate links. We may earn a commission at no extra cost to you.