56 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 |
|---|---|---|
| 47-819-38 | Vitodens 050-W BPJD 29kW Combi Boiler | 2014–present |
| 47-819-31 | Vitodens 050-W BPJC 29kW Combi Boiler | 2014–2016 |
| 47-819-32 | Vitodens 050-W BPJC 35kW Combi Boiler | 2014–2016 |
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Your boiler has shut down because it is struggling to discharge exhaust fumes safely or is detecting a significant lack of air flow.
Your boiler has shut itself down as a safety precaution because it has detected an overheating issue within the system.
Your boiler has detected a sequence of ignition or flame detection errors and has shut itself down for safety.
Your boiler has detected a sequence of ignition or flame detection errors and has shut itself down for safety.
Your boiler has stopped heating because it cannot detect the flow of water needed to safely ignite the burner.
Your boiler has detected a sequence of ignition or flame detection errors and has shut itself down for safety.
Your boiler has detected a sequence error or a flame signal where there shouldn't be one, causing the burner to shut down completely for safety.
Your boiler has detected a sequence of ignition or flame detection errors and has shut itself down for safety.
Your boiler has detected a sequence error or a flame signal where there shouldn't be one, causing the burner to shut down completely for safety.
Your boiler is struggling to accurately gauge the weather outside, meaning it might not provide the right amount of heat for your home.
Your boiler has lost its connection to the outside temperature sensor, meaning it cannot automatically adjust your heating based on the weather.
Your boiler has detected an electrical fault with a sensor that monitors the water temperature flowing into your heating system, leading it to shut down for safety.
Your boiler has lost connection with a temperature sensor that monitors the main water flow, likely due to a broken wire or a faulty sensor.
Your boiler has stopped heating because a internal sensor that monitors water temperature has developed an electrical fault and is preventing the burner from firing.
Your boiler has failed to ignite or stay lit, meaning your heating and hot water have stopped working.
Your boiler has stopped working because it can no longer accurately measure the temperature of the water inside the system.
Your boiler has stopped working because it thinks the hot water tank is dangerously overheating due to a faulty electrical sensor.
Your boiler has stopped heating your hot water because it can no longer detect the temperature of your hot water cylinder.
Your boiler has stopped providing hot water because the internal sensor that measures water temperature has detected a technical fault or a short circuit.
Your boiler has stopped working because a sensor that monitors the water temperature has developed an electrical fault.
Your boiler has detected an electrical fault in its water flow sensor and has shut down for safety to prevent damage.
Your boiler has stopped providing hot water because the internal sensor that measures water temperature is broken or disconnected.
Your boiler has stopped working because it cannot accurately measure the temperature of the water leaving the unit, usually due to a fault in a sensor or its wiring.
Your solar heating system has a faulty sensor or a wiring problem that is preventing it from correctly monitoring the temperature of the roof panels.
Your boiler has detected a technical fault with a sensor in your solar heating system, which may affect its ability to heat your water using solar energy.
Your boiler has lost communication with the temperature sensor in your hot water tank because of an electrical fault, meaning it cannot accurately monitor your solar heated water.
Your boiler has sensed that the internal pump is malfunctioning or water is not circulating correctly, which has caused the system to stop as a safety precaution.
Your boiler has detected that the water pump is likely stuck or not moving water correctly, which means the system cannot heat up safely.
Your boiler's control panel has developed a communication fault and is unable to send or receive correctly.
Your boiler's main internal computer has lost touch with the display panel, meaning the controls cannot talk to the heating unit.
Your boiler is having trouble 'talking' to your thermostat, which means it might not know when to turn your heating on or off.
Your boiler has detected an electrical fault with the sensor that monitors the temperature of the exhaust gases, causing the system to shut down for safety.
Your boiler's main control panel is having trouble talking to its own internal computer, meaning you cannot change settings or control the heating properly.
Your boiler has encountered an internal electronic communication error that is preventing it from monitoring its own performance correctly.
Your boiler has detected a broken connection or a fault with the sensor that monitors the temperature of the exhaust gases, causing the system to stop working for safety.
Your boiler is having trouble communicating with the wall-mounted thermostat control because of a setup or configuration error.
Your boiler is currently stuck in an automated filling process and cannot continue until this is resolved.
Your boiler is having trouble communicating with its internal pump, which means it cannot properly move heated water around your system.
Your boiler is having trouble communicating with the internal pump that moves hot water around your heating system.
Your boiler is having trouble communicating with the internal pump that moves hot water through your radiators, which may prevent your heating from working correctly.
Your boiler is having trouble communicating with an add-on control or an external smart home accessory, which may affect its ability to run efficiently.
Your boiler has stopped working because it cannot detect any water moving through the system to keep it from overheating.
Your boiler has lost connection with the temperature sensor that controls your second heating zone, meaning it cannot properly regulate the temperature for that part of your home.
Your boiler has detected a safety issue within its internal systems and has shut down to prevent any risk of harm.
Your boiler has stopped working because it cannot confirm that a flame is burning safely, leading to a complete shutdown for your protection.
Your boiler has experienced a serious internal brain failure and the main control board likely needs to be replaced.
Your boiler has switched itself off because it has reached a dangerously high temperature, likely due to a lack of water or poor circulation.
Your boiler has shut down because it has detected it is getting too hot, which is usually caused by a lack of water or a circulation problem.
Your boiler is detecting a flame when there shouldn't be one, so it has shut down for safety purposes to prevent a malfunction.
Your boiler has failed to light the flame, which means it cannot provide any heating or hot water until the issue is resolved.
Your boiler has detected a problem with the gas valve not closing correctly, so it has shut down the burner for safety.
Your boiler has stopped working because the internal fan isn't spinning fast enough to safely start the heating process.
Your boiler has failed to start properly and the fan is running constantly to clear out the system, preventing the heater from firing up.
Your boiler has detected an internal communication error with the fan that manages airflow, so it has safely shut down to prevent unsafe operation.
Your boiler's internal computer has crashed due to an ignition failure or electrical interference, preventing it from starting the burner.
Your boiler's internal computer has encountered a critical error or is having trouble communicating with its electronic security card, causing the system to shut down for safety.
Not faults — these are normal operating states. Tap to expand.
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BoilerFaultCodes