Glow-worm Ultracom sxi Fault codes & diagnostics

Your boiler has lost water pressure and needs to be topped up to work correctly.

Your boiler has lost the signal from a sensor that monitors the temperature of water returning from your radiators, so it has stopped working to prevent potential overheating.

Your boiler is failing to light because it cannot detect a flame, meaning you currently have no heating or hot water.

Your boiler has detected that the internal unit responsible for venting exhaust gases safely is not working, so it has shut down to prevent unsafe operation.

Your boiler is struggling to clear exhaust gases properly, so it has safely shut itself down to prevent any unsafe buildup.

Your boiler has switched itself off because it has detected an unsafe rise in internal temperature and needs a professional to check it is venting heat correctly.

Your boiler has lost the ability for its internal parts to talk to each other, meaning it cannot operate safely and has shut down to protect itself.