31 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Egis Plus
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Your boiler has detected that it is getting too hot and has automatically shut itself down to prevent damage.
Your boiler has detected that the water is not flowing through your heating system correctly, so it has shut down to prevent overheating.
Your boiler is struggling to push water around your heating system, likely because the internal pump is blocked or the system pressure is too low.
Your boiler has detected that water is not flowing properly around your heating system, so it has safely shut itself down to prevent overheating.
Your boiler is struggling to push water through your heating system because the flow is blocked or restricted.
Your boiler is struggling to pump water around your heating system, usually because there is trapped air or a blockage preventing it from flowing correctly.
Your boiler has detected that the water pressure inside the system is too low, which prevents it from operating safely.
Your boiler's internal water pressure has climbed too high and the system is safely shutting down to prevent potential leaks or damage.
Your boiler is struggling to accurately measure its own internal water temperature because the sensor responsible for this task is failing or its connection has been interrupted.
Your boiler has stopped working because it cannot correctly read the temperature of the water returning to it from your radiators.
Your boiler is struggling to read the temperature from the outside sensor, which might cause it to heat your home less efficiently.
Your boiler has stopped heating because the external temperature safety switch or room thermostat is telling the system to stay off.
Your boiler is struggling to move water around your heating system effectively, so it has shut down to prevent overheating.
Your boiler is struggling to move water through your radiators or pipes quickly enough, which is preventing it from heating your home properly.
Your boiler is struggling to move water around your heating system effectively, so it has turned itself off to prevent overheating.
Your boiler's optional solar water heating sensor is disconnected or faulty, which may prevent your hot water from heating up correctly.
Your boiler's computer memory has encountered a data error, which is preventing the system from starting up or operating correctly.
Your boiler's internal computer has lost its ability to talk to the control panel, meaning it cannot receive commands to heat your water or home.
Your boiler's electronic control system has encountered an internal communication error and is unable to operate safely.
Your boiler has been manually reset too many times in a short period, so it has locked itself out as a safety precaution.
Your boiler's main control computer is experiencing a communication fault, which means the system cannot safely regulate your heating or hot water.
Your boiler's main control computer is experiencing a critical internal communication failure and cannot operate safely.
Your boiler's electronic control system is experiencing a major internal communication error that is preventing it from operating safely.
Your boiler has failed to light because it cannot detect a flame, meaning you currently have no heating or hot water.
Your boiler has detected a flame when it shouldn't have, which indicates a potential safety issue with the internal gas control system.
Your boiler is struggling to keep the flame lit correctly, meaning it will likely shut down for safety reasons to prevent incomplete combustion.
Your boiler has tried to start up but failed to ignite the flame, so it has stopped trying to prevent the buildup of unburned gas.
Your boiler has tried and failed to light the flame twice, meaning it cannot provide heating or hot water until the issue is fixed.
Your boiler has detected that the flame inside has gone out unexpectedly while it was running, so it has safely shut itself down to prevent gas buildup.
Your boiler has detected that the water inside it is getting dangerously hot and has shut down to prevent damage or safety risks.
Your boiler's fan is not spinning fast enough to clear waste gases safely, so the system has shut down to prevent any risk.
BoilerFaultCodes