BoilerFaultCodesThe 6 most common faults
Your boiler has become too hot and has automatically shut down to prevent damage to the internal components.
Wait for the boiler to cool down for at least 20 minutes.Check that all radiator valves are fully open and there are no obstructions to water flow.Press the 'Reset' button on the control panel to clear the lockout.
Your boiler has failed to light after several attempts and has locked itself out for safety.
Check that your gas supply is turned on at the meterIf you have a prepaid gas meter, ensure it has creditPress the reset button on the control panel to attempt a restart
Your boiler started to heat up but the flame went out unexpectedly, causing the system to shut down for safety.
Check that your gas emergency control valve is open and you have credit on your gas meterCheck if other gas appliances, like a hob, are working to confirm gas supplyPress the reset button to see if the boiler restarts
Your boiler has stopped working because the water pressure is too low for the system to run safely.
Locate the filling loop (usually a silver flexible hose) under the boiler.Open the one or two taps on the hose slowly to let water into the system.Watch the pressure gauge until it reaches between 1 and 1.5 bar, then close the taps fully.Press the reset button on the boiler control panel.
Your boiler has shut down because the internal water temperature has become too hot.
Ensure all radiator valves are fully open to allow water to flow.Check that the boiler pressure gauge is between 1 and 1.5 bar; top up if low.Press the Reset button once the boiler has cooled down for 20 minutes.
Your boiler appears to have no power and the control panel is completely blank, meaning it cannot start the ignition process.
Check if other appliances are working to rule out a general power cutEnsure the boiler's fused spur switch (usually near the boiler) is turned ONCheck your home's main consumer unit (fuse box) to see if a circuit breaker has trippedReplace the fuse in the boiler's external switch with a new 3-amp fuse
on the Maxol Supacombi HE 24
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 Maxol 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