BoilerFaultCodes.com

Glow-worm Glow-worm Fault Codes

Natural Gas

All 39 fault codes

Code Severity Plain English
All boilers High Your boiler has detected an issue with the sensor that measures the temperature of the water returning to the unit, often caused by a loose connection or a faulty internal component.
All boilers High Your boiler has detected a communication problem between its electronic control boards or internal parts, meaning they cannot speak to each other correctly.
All boilers High Your boiler has detected that the water is getting too hot too quickly, likely due to a circulation problem or a lack of water in the system.
All Boilers High Your boiler has failed to ignite, which is usually due to a lack of gas supply or a problem with the ignition process.
All Boilers High Your boiler's electronic control board is having trouble communicating with the user interface display or its internal sensors.
All Boilers High Your boiler has likely overheated because the water inside has become too hot for it to operate safely.
All Boilers High Your boiler has detected an issue with a temperature sensor, most likely the one that monitors the water being sent to your radiators, which prevents the system from heating up safeley.
All Boilers High Your boiler has lost its connection to the flame sensor, meaning it cannot confirm if the gas has ignited properly.
All Boilers High Your boiler has stopped working because its internal computer and parts are struggling to communicate properly, often due to a fault with the main electronic control board.
All Ultracom High Your boiler has lost power or has a major electrical communication error, meaning it cannot operate at all.
Betacom High Your boiler has detected a general fault or triggered a safety lockout, meaning it has stopped working to prevent damage or ensure safety.
Betacom High Your boiler has likely lost pressure or failed to ignite, causing it to stop providing heating and hot water as a safety precaution.
Betacom High Your boiler has detected that the system water pressure is too low for it to operate safely.
Betacom High Your boiler is telling you that it has failed to ignite, meaning it cannot heat up to provide warmth or hot water.
Betacom Low Your boiler is currently switched on and operating correctly under normal conditions.
Betacom High Your boiler has lost power or has shut down completely, meaning you will have no heating or hot water until the electrical supply is restored.
Betacom c High Your boiler has likely lost pressure, which has caused it to shut down to prevent damage.
Betacom c High Your boiler has likely lost water pressure or there is a blockage preventing water from circulating properly through the system.
Betacom c High Your boiler has detected that the water inside is not circulating correctly or is overheating, causing the system to shut down for safety.
Betacom c High Your boiler has lost water pressure, causing it to stop running for safety reasons.
Betacom c High Your boiler has likely detected a problem with the internal temperature sensors or a lack of water pressure, causing it to stop heating for safety.
Betacom c High Your boiler has likely overheated, causing it to shut down temporarily for safety.
Betacom c High Your boiler has reached an excessively high temperature because water is not flowing through the system correctly, causing it to shut down to prevent damage.
Boiler Model High Your boiler is not receiving a steady supply of gas or isn't detecting a flame, which has caused it to stop running for safety.
ci range High Your boiler has detected an issue with the fan or the electrical circuit that controls it, preventing the appliance from starting safely.
ci range High Your boiler has detected an issue with the main fan or its electrical connection, which means the system cannot safely clear exhaust gases and will not start.
Compact e / s High Your boiler is heating your radiators correctly, but it is failing to heat any water for your taps or showers.
Compact e / s Medium Your boiler is providing hot water as usual, but the central heating is failing to turn on or circulate around your radiators.
Compact e / s Medium Your boiler is working to heat your water, but it is failing to send that heat to your radiators.
Compact e / s High Your boiler is failing to detect a flame and is shutting itself down immediately for safety.
Compact e / s High Your boiler is not receiving the correct amount of gas to stay lit or maintain a flame effectively.
hxi range High Your boiler has detected a fault with the water pressure sensor or the electrical components that monitor water circulation.
hxi range High Your boiler has detected an issue with the water pressure or the part that monitors water circulation, meaning it cannot safely circulate heat around your home.
Ultracom₂ 35 Store High Your boiler is having trouble sensing or delivering hot water because the temperature sensors for the internal storage tank are either faulty or disconnected.
Ultracom₂ 35 Store High Your boiler has detected an electrical fault with its internal circuit board or its connection to the hot water storage tank, preventing the system from heating up safely.
Ultracom₂ 35 Store High Your boiler is failing to heat up the hot water tank properly, likely due to a circulation problem or a faulty part responsible for monitoring the stored water temperature.
Xtramax HE Range High Your boiler is struggling to circulate water quickly enough, likely because the temperature is rising too fast or the pump is underperforming.
Xtramax HE Range High Your boiler has likely detected an overheating issue or a problem with the temperature sensors that monitor the water flow.
Xtramax HE Range High Your boiler has detected an internal electrical fault where a key component is receiving incorrect voltage or is malfunctioning, causing the system to shut down for safety.

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