61 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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The GC number on your boiler's data badge identifies the exact appliance and production years, as recorded in the UK Product Characteristics Database.
| GC number | Appliance (register name) | Produced |
|---|---|---|
| 41-019-50 | EASICOM 3 25r | 2016–present |
Appliance names and production years are taken from the UK Product Characteristics Database (the SAP/SEDBUK register). Where a GC number is also printed in this model's own manufacturer manual, both sources were checked to agree.
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Your boiler's digital display panel is having trouble talking to the main control brain inside the unit, meaning it cannot receive your commands.
Your boiler is unable to measure the temperature of the water inside it, so it has safely shut down to prevent overheating.
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 is unable to accurately measure the temperature of the water flowing through the system due to a faulty electrical connection or sensor.
Your boiler has stopped working because it is unable to accurately read the temperature of the water returning to it, causing it to shut down for safety.
Your boiler is struggling to detect the temperature of your hot water cylinder because of a faulty connection or wiring issue.
Your boiler has lost the connection to the temperature sensor in your hot water cylinder, meaning it no longer knows how hot the water currently is.
Your boiler has detected that it is getting too hot and has automatically switched itself off to prevent any damage.
Your boiler has detected that the water temperature is changing too drastically between different internal sensors, likely due to a flow issue, so it has safely turned itself off.
Your boiler has detected that the water inside it is heating up much faster than it should, so it has turned itself off as a safety precaution.
Your boiler has detected that the exhaust gases are becoming far too hot and has automatically switched itself off to prevent damage or dangerous overheating.
Your boiler has detected an issue with its flame monitoring system and has safely shut down to prevent gas from flowing without a confirmed flame.
Your boiler is failing to light the fuel inside, meaning it cannot produce heat or hot water because it hasn't detected a flame.
Your boiler is trying to start but the flame keeps going out, meaning it cannot produce heat or hot water.
Your boiler has detected that the internal fan responsible for clearing exhaust gases is not spinning at the correct speed to operate safely.
Your boiler's internal communication system is struggling to transmit data because the electrical signal between its components is too weak.
Your boiler has detected an issue with the component that manages the flow of gas, causing it to shut down for safety reasons.
Your boiler has detected an issue with the valve that controls the gas supply, causing it to shut down for safety reasons.
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 computer processing error, causing it to shut down for safety reasons to prevent incorrect operation.
Your boiler has detected that its internal computer components are overheating, so it has safely shut itself down to prevent any damage.
Your boiler has detected an internal electronic error while trying to monitor the flame, causing it to shut down for safety.
Your boiler is struggling to keep the flame alight consistently, causing it to shut down for safety reasons.
Your boiler's computer has lost its identity settings, preventing it from knowing how to function correctly.
Your boiler has stopped working because it is unable to accurately measure the temperature of the water flowing through your heating system.
Your boiler is struggling to accurately measure its internal water pressure or temperature, preventing it from operating safely.
Your boiler has detected that water is failing to drain away properly or there is an issue with the exhaust system, causing it to shut down for safety.
Your boiler is having trouble communicating with the external controller used for your hot water system, which might result in a loss of hot water.
Your boiler has detected that there is not enough water circulating inside the system to safely heat it up, causing it to shut down to prevent damage.
Your boiler is struggling to accurately measure the temperature of the water circulating through your heating system, so it has stopped working as a safety precaution.
Your boiler has detected that a temperature sensor is not providing the correct data, which is preventing the system from safely heating your water.
Your boiler has detected an issue with the separate switch or connection that tells it to provide heat to your underfloor heating system.
Your boiler is failing to ignite correctly because the probe responsible for lighting the gas is not working as it should, meaning your heating and hot water will not turn on.
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 is struggling to detect the temperature of your hot water cylinder because there is an electrical connection issue with the sensor.
Your boiler's computer has detected an internal error while running its own system health check and has safely stopped working to prevent further issues.
Your boiler is simply letting you know that it has received a request to heat up your hot water tank.
Your boiler is currently preparing to heat your hot water by checking its internal air system before starting the burner.
Your boiler is simply preparing its internal pump to deliver hot water, which is a normal part of the start-up process.
Your boiler is currently trying to light the flame to heat your hot water.
Your boiler is currently operating normally and is heating up your hot water supply.
Your boiler is currently cooling down after a period of hot water use, which is a normal part of the system's shutdown process.
Your boiler is currently running its cooling fan to clear out heat after providing hot water, which is a normal part of the shutdown cycle.
Your boiler is currently running its internal pump to circulate water after heating your hot water tank, which is a normal part of the cooling-down process.
Your boiler has temporarily paused heating your water to prevent it from getting too hot, but it should restart automatically once the temperature settles.
Your boiler is perfectly healthy, but it is currently waiting for a signal from your wall-mounted thermostat to tell it to turn the heating on.
Your boiler is working correctly but is currently idle because your heating controls are set to summer mode or are not currently asking for heat.
Your boiler is pausing because its internal air-flow fan is not spinning at the exact speed required to operate safely.
Your boiler has detected that the temperature is getting very low and has automatically switched on its internal heating to prevent the pipes from freezing.
Your boiler has detected that the safety switch for your underfloor heating system is currently turned off or disconnected, so it has stopped heating that area.
Your boiler has detected that the flap which controls the airflow in your exhaust pipe is stuck shut, preventing it from safely releasing combustion gases.
Your boiler is temporarily running a low-level frost protection cycle to prevent the internal pipes from freezing, which is a normal protective feature.
Your boiler is temporarily pausing because it has detected that the water is not circulating properly or the system pressure is too low.
Your boiler has paused because the water pressure is too low or the water is not circulating properly around your heating system.
Your boiler is currently performing an automatic air-removal process to clear bubbles from the system, which is a normal part of its internal maintenance.
Your boiler has been accidentally set to a showroom display mode rather than operating as a normal home heating appliance.
Your boiler is currently running a self-check or has detected an issue with a sensor that monitors the temperature of the water coming back from your radiators, so it has stopped heating as a precaution.
Your boiler is currently running a self-diagnostic check, which is preventing it from heating your home until the system completes its internal review.
Your boiler is currently running its internal self-check sequence and should return to normal operation automatically once the process finishes.
Your boiler is simply performing a routine safety check by clearing out its air intake before it attempts to switch on.
Your boiler is currently in a temporary sleep mode and is functioning exactly as it should.
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BoilerFaultCodes