Glow-worm Essential Fault codes & diagnostics

Your boiler has stopped working because it can no longer accurately read the temperature of the water flowing through the system.

Your boiler is struggling to accurately measure the temperature of the water returning to it, so it has stopped working to prevent potential overheating.

Your boiler has stopped working because it cannot correctly measure the temperature of the water flowing through the system due to a faulty electrical connection or sensor.

Your boiler is currently unable to correctly measure the temperature of the water returning to it, so it has shut down to prevent potential overheating.

Your boiler is struggling to detect the temperature of your hot water supply because of a faulty connection in its sensing system.

Your boiler has detected that it is running too hot and has automatically shut itself down to prevent damage.

Your boiler has stopped working because the water pressure inside the system has dropped too low to operate safely.

Your boiler has detected that the water is getting hot in one part of the system much faster than in another, so it has shut itself down to prevent overheating.

Your boiler has detected that the water inside is heating up far too quickly, which has triggered a safety shutdown to prevent damage.

Your boiler has detected an issue with the flame and has safely shut itself down to prevent gas from building up inside the unit.

Your boiler is failing to light the flame needed to produce heat or hot water.

Your boiler is failing to stay lit, meaning your heating and hot water have stopped working because the flame keeps going out.

Your boiler has detected that the internal exhaust fan is not spinning at the correct speed, so it has safely shut itself down to prevent any issues.

Your boiler has detected an issue with the system that moves air through the unit and is pausing its activity as a safety precaution, meaning you currently have no heating or hot water.

Your boiler is having trouble communicating with its internal controls because the electrical connection between them is not providing enough power.

Your boiler’s internal computer has encountered a memory reading error, preventing it from starting up correctly.

Your boiler's computer is having trouble reading its internal sensors, which is preventing the system from operating safely.

Your boiler has detected that its internal electronic components are overheating and has shut down for safety.

Your boiler has detected an internal electronic error while trying to confirm the burner flame is lit and has safely shut itself down as a precaution.

Your boiler is struggling to keep the internal flame steady, so it has shut itself off to stay safe.

Your boiler's computer has lost its identity settings and no longer knows which specific model it is, meaning it cannot operate safely.

Your boiler is unable to accurately measure how hot the water is inside the system, so it has safely shut down to prevent potential overheating.

Your boiler is struggling because its sensors are struggling to communicate, meaning it cannot accurately monitor the water flow and temperature required to run safely.

Your boiler's sensor is failing to detect the water pressure, so it has safely shut down to prevent damage to internal parts.

Your boiler is having trouble 'reading' the water pressure inside the system because of an electrical issue with one of its internal sensors.

Your boiler has detected an issue with the system that drains internal moisture, causing it to shut down for safety.

Your boiler has detected that the water temperature is not changing as expected while the burner is running, so it has shut down to prevent damage.

Your boiler is struggling to compare the temperature of the water leaving and returning to it, so it has stopped working as a safety precaution.

Your boiler has detected that the sensors responsible for measuring water temperature are not providing clear or correct readings, causing the system to stop working to avoid potential damage.

Your boiler is failing to light the flame because the part responsible for producing the ignition spark is not working correctly.

Your boiler has detected an issue with the valve that controls the supply of gas to the burner, meaning it cannot safely start up to provide you with heating or hot water.

Your boiler is not able to circulate water through your radiators or taps because the internal pump responsible for moving that water is failing to operate.

Your boiler has stopped working because the water pressure inside the heating system has dropped too low to operate safely.