BoilerFaultCodes
The most common Myson faults
01
10.4 High DIY-safe
Your boiler has switched itself off to prevent overheating, likely because the internal temperature has become too high.
What to try first
Turn off the power supply to the boiler and let it cool down for at least 30 minutes.Check that all your radiator valves are open and not turned off.Press the manual reset button, which is usually found behind the front panel or at the bottom of the unit.
02
LED 2 High Engineer
Your boiler is struggling to clear air through its internal system effectively enough to safely ignite the burner.
Full guide for Midas 80 LED 203
10.1 High Engineer
Your boiler is unable to start the small flame needed to fire up the main heating system, which means you have no heating or hot water.
Full guide for Economist WM 10.104
10.2 High Engineer
Your boiler's pilot light is failing to stay on, which prevents the main burner from firing and heating your home.
Full guide for Economist WM 10.205
10.3 High Engineer
Your boiler has a flame for the pilot light, but the main heating burner is failing to ignite, meaning you won't have any heating or hot water.
Full guide for Economist WM 10.306
LED 3 Medium Engineer
Your boiler is signalling that it is asking the internal air extraction motor to speed up to prepare for ignition.
Full guide for Midas 80 LED 307
LED 1 Low Engineer
Your boiler is currently checking that there is enough airflow for it to start up safely; this light should turn off automatically once the system is ready to fire.
Full guide for Midas 80 LED 108
LED 6 Low DIY-safe
Your boiler is currently going through its normal startup process to ignite the burner and get your heating or hot water working.
What to try first
No action required; this is a normal status indicator.Monitor the boiler to ensure it completes its ignition cycle.If the LED remains on without the burner igniting, try a reset.