BoilerFaultCodesThe 6 most common faults
Your boiler has failed to ignite or has lost its flame, causing it to shut down for safety.
Check if your gas supply is active (e.g., check other gas appliances or your meter credit)Press and hold the 'Reset' button for a few seconds to restart the boilerEnsure the condensate pipe (the white plastic pipe outside) hasn't frozen in cold weather
Your boiler has stopped working because it has detected an overheating issue and needs to cool down before it can be used again.
Wait for the boiler to cool down for at least 15 minutes.Turn the selector switch to the 'Reset' position for a few seconds and then back to 'On'.Check that all radiator valves are open and ensure the system pressure is between 1 and 1.5 bar.
Your boiler has detected low water pressure in the system, which is preventing it from heating up or providing hot water.
Locate the filling loop (usually two braided hoses or valves) under the boiler.Slowly open both taps/handles until you hear water entering the system.Watch the pressure gauge on the front of the boiler until it reaches between 1.0 and 1.5 bar, then close both valves tightly.
Your boiler has failed to ignite because the burner did not light after several attempts, meaning your heating and hot water will not work.
Check if other gas appliances, like a cooker, are working to confirm gas supply.Verify that your gas meter has credit if you have a pre-payment meter.Turn the control knob to the 'R' (Reset) position for 2 seconds and then back to the 'On' position.
Your boiler has detected that the water pressure is too low, causing it to shut down to prevent damage.
Locate the filling loop (the flexible braided hose) underneath the boiler.Slowly open the one or two taps on the hose until you hear water entering the system.Watch the pressure gauge and close the taps once the needle reaches between 1 and 1.5 bar.
Your boiler has detected a problem with how it is getting rid of exhaust gases or taking in fresh air, causing it to shut down for safety.
Full guide for ER 03 + Reseton the Biasi M96E
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