Glow-worm Compact 28c-AS/2 Fault codes & diagnostics

Your boiler has lost the signal from one of its internal temperature sensors, causing it to shut down for safety.

Your boiler has lost the signal from the sensor that monitors the water temperature returning to the unit, causing it to stop heating as a safety precaution.

Your boiler's internal thermometer has developed a fault and can no longer tell how hot the water is, causing the system to shut down for safety.

Your boiler has stopped working because it is unable to accurately measure the temperature of the water returning to it, preventing it from heating safely.

Your boiler has detected that it is running too hot and has automatically turned itself off to prevent any damage or safety issues.

Your boiler has stopped working because the amount of water inside your heating system has dropped below the minimum level required to operate safely.

Your boiler has detected that the water is heating up significantly faster than it can be moved around your system, forcing it to shut down to prevent internal damage.

Your boiler has detected that the water inside is heating up far too quickly, so it has shut itself down to prevent any damage or overheating.

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

Your boiler is attempting to light but is failing to stay on, meaning you currently have no heating or hot water.

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

Your boiler is struggling to breathe properly because there is a blockage or a problem with the pipes that bring in fresh air and push out exhaust fumes.

Your boiler is struggling to communicate with its internal control system or any connected external thermostats.

Your boiler's internal computer is experiencing a memory error, meaning it has lost its settings and cannot safely manage the heating process.

Your boiler has detected an internal electrical problem or a misreading from its internal sensors, causing it to shut down for safety.

Your boiler has detected that its internal control electronics are running too hot and has safely switched off to prevent permanent damage.

Your boiler's main computer control panel is having trouble detecting the burner flame, which has caused it to shut down for safety reasons.

Your boiler is struggling to keep its internal flame lit while it is running.

Your boiler's computer has lost its identity settings and no longer recognises its own configuration, which prevents it from operating safely.

Your boiler is struggling to accurately measure the temperature of the water moving through it, so it has shut down to prevent overheating.

Your boiler is struggling to monitor the temperature of the water returning to it, so it has stopped working as a safety precaution to prevent overheating.

Your boiler has detected that the water pressure reading is incorrect, which is preventing it from heating your home safely.

Your boiler has detected a sudden drop in water pressure or a problem with the circulation pump, causing it to temporarily shut down to protect itself.

Your boiler has detected an overheat situation and has shut itself down to prevent damage to its internal components.

Your boiler is detecting a blockage or a mechanical issue related to the safe ventilation of exhaust gases or the removal of water waste from the system.

Your boiler has lost communication with the sensor that measures the temperature of your hot water, so it cannot safely heat it up for you.

Your boiler is struggling to get a consistent temperature reading, resulting in the system shutting down to prevent potential overheating.

Your boiler has detected that the sensors measuring the internal water temperature are giving conflicting readings, so it has stopped working for safety reasons.

Your boiler has detected that the pipes measuring water temperature inside the unit have been swapped around during installation.

Your boiler has detected an external safety signal, such as a problem with your flue or a connected smart controller, and has shut down to protect your home.

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

Your boiler has detected an issue with the internal components that control the gas supply, meaning it has safely shut itself down to prevent ignition.

Your boiler has lost its electrical connection to the internal water pump, which means it cannot circulate water to heat your home or provide hot water safely.

Your boiler's computer is unable to complete its internal startup check, meaning it cannot safely operate and has shut down to protect the system.