Glow-worm MicraCom Fault codes & diagnostics

Your boiler has lost the signal from the sensor that monitors the water temperature, meaning it cannot safely heat your home.

Your boiler has lost the signal from the sensor that monitors the temperature of the water coming back into the heating system, so it has shut down as a precaution.

Your boiler has lost the ability to accurately measure the temperature of the water flowing through the system, so it has shut down as a precaution to prevent overheating.

Your boiler is currently unable to read the water temperature accurately because of a faulty connection or sensor, which has caused it to shut down for safety.

Your boiler has detected that it is overheating and has automatically switched itself off to prevent internal damage.

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

Your boiler has detected that water is failing to circulate properly, causing it to overheat in one area compared to another, so it has shut down to protect itself from damage.

Your boiler has detected that it is heating up significantly faster than it should, so it has safely shut itself down to prevent damage to its internal components.

Your boiler has detected an internal sensor fault that makes it think a flame is present even when the burner is off, so it has safely shut down to prevent starting incorrectly.

Your boiler has failed to ignite and cannot get your heating or hot water working because it isn't detecting a flame.

Your boiler is trying to start but the flame keeps going out, meaning you currently have no heating or hot water.

Your boiler has detected an issue with the ventilation system that clears exhaust gases, so it has safely shut down to prevent unsafe operation.

Your boiler is having a communication breakdown with its internal controls or a remote thermostat, meaning it cannot receive instructions correctly.

Your boiler's computer has encountered a memory error, meaning it can no longer recall the internal settings required to operate safely.

Your boiler has detected an issue with its internal electronic controls or temperature sensors, meaning it cannot safely monitor how hot it is and has shut down to prevent damage.

The main control board inside your boiler is overheating, causing the system to shut down to prevent permanent damage.

Your boiler's computer is struggling to talk to the ignition system, meaning the boiler has safely shut down to prevent any issues.

Your boiler is struggling to maintain a steady flame, causing it to shut down for safety reasons.

Your boiler’s internal computer has lost its unique identification settings, meaning it no longer knows exactly which model it is or how it should operate.

Your boiler is struggling to accurately measure the temperature of the water being heated, so it has stopped working as a safety precaution.

Your boiler is struggling to accurately monitor the temperature of the water returning to it, so it has stopped running to prevent any damage.

Your boiler has detected that the water pressure inside the heating system is too low to operate safely.

Your boiler has detected an issue with the water pressure reading, which is currently triggering a safety shutdown to prevent internal damage.

Your boiler has detected that water is not circulating properly through the system, which prevents it from heating your home or water safely.

Your boiler has detected that it is overheating and has automatically switched itself off to prevent internal damage.

Your boiler is struggling to clear exhaust gases or remove waste water effectively, so it has safely shut down to prevent any internal buildup.

Your boiler is struggling to read its own temperature accurately, leading it to shut down to prevent the system from getting too hot or cold.

Your boiler is confused because its internal temperature sensors are giving conflicting readings, so it has stopped working to prevent potential damage.

Your boiler has detected that two of its internal temperature cables or sensors have been accidentally swapped around during installation or a recent repair.

Your boiler has detected an external signal or safety issue that has forced it to shut down to prevent potential damage.

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

Your boiler has detected that the water pump responsible for circulating heat around your radiators is not working correctly, so it has shut down to prevent damage.

Your boiler's computer system has detected an internal error during its startup check and cannot safely operate.