Worcester Bosch Greenstar 2000 GR2301iW 25 C Fault codes & diagnostics

Your boiler has sensed that the water temperature has risen above the level it was set to reach, leading it to shut down for safety.

Your boiler is shutting down because it is heating up much faster than it can circulate the water, which often points to a blockage or a pump issue.

Your boiler has detected that the internal fan is not spinning as expected during start-up, so it has safely shut down to prevent unsafe operation.

Your boiler has temporarily stopped working because the internal fan failed to run safely when trying to start up.

Your boiler has switched itself off because it has detected an unsafe rise in internal temperature and needs to be inspected by a professional.

Your boiler is failing to light the gas even though it is trying to, which prevents your heating and hot water from working.

Your boiler thinks a flame is burning even though it hasn't actually sparked or started, causing it to shut down for safety.

Your boiler's flame has gone out while it was trying to heat your water, which means the boiler has safely shut itself down to prevent any issues.

Your boiler was running, but the flame went out unexpectedly, causing it to stop heating.

Your boiler has temporarily stopped working because an external safety switch, such as a smart thermostat or underfloor heating control, has locked the system.

Your boiler's internal computer is having trouble recognising a core internal part, so it has safely shut down to prevent any issues.

Your boiler is confused because its internal computer board and its identification settings do not match up correctly.

Your boiler has detected an internal system communication error and has safely shut down to prevent further issues.

Your boiler has detected an internal electronic failure within its main control system and has safely stopped working.

Your boiler has detected an internal electrical problem with its control system, which requires professional attention to resolve safely.

Your boiler has detected an internal electronic communication error and has safely shut down to protect its system.

Your boiler has temporarily paused because an internal reading has gone outside of its normal operating limits.

Your boiler's internal computer is experiencing a communication error and cannot safely manage the heating or hot water systems.

Your boiler's internal computer is experiencing a communication error or technical failure, preventing it from operating correctly.

Your boiler has detected an internal computer glitch and needs to be reset or inspected by a professional.

Your boiler has detected an internal electronic check failure during startup and has safely locked itself out to prevent improper operation.

Your boiler has detected an internal software error where its processing memory has overloaded, requiring a system reset or professional software update.

Your boiler's main electronic brain has detected an internal memory error and needs to be reset or repaired.

Your boiler's main electronic memory has failed its internal safety check, causing the system to lock out to protect your home.

Your boiler's main control computer is experiencing a temporary glitch or internal error, which has caused it to pause its normal operation as a safety precaution.

Your boiler's main control computer is experiencing a temporary glitch or internal error, which has caused it to pause its normal operation as a safety precaution.

Your boiler's internal computer is experiencing a temporary software glitch and has shut down to prevent any unsafe operation.

Your boiler's internal computer has experienced a safety glitch and has temporarily locked itself out to protect your home.

Your boiler has detected an internal communication error with its main control unit that is preventing it from operating correctly.

The boiler's internal computer is experiencing a temporary software glitch and cannot properly communicate with its internal systems.

Your boiler's computer is having trouble starting up its internal system properly, which is preventing it from firing up.

Your boiler is struggling to breathe properly, meaning it cannot safely clear exhaust gases and has shut down to protect your home.

Your boiler has detected an internal communication glitch during its self-test phase, which prevents it from firing up safely.

Your boiler has detected that the flame is not burning as it should and has shut itself down to keep your home safe.

Your boiler has detected that the flame-making process has stopped, preventing your heating or hot water from working.

Your boiler has accidentally been left in a restricted diagnostic mode used by engineers during installation, meaning it cannot currently heat your home or water.

Your boiler is struggling to push water through your heating system because the water pressure inside is too low.

Your boiler is having trouble managing the balance of air and gas required for safe combustion and has locked itself out to prevent potential issues.

Your boiler's internal computer is failing to communicate correctly with its external controls, preventing your heating or hot water from turning on.

Your boiler is heating the water much faster than it is able to move it away, causing the system to stop as a safety precaution to prevent overheating.

Your boiler has lost its ability to accurately measure the temperature of the water flowing through the heating system because one of its internal sensors is sending a faulty electrical signal.

Your boiler has temporarily stopped working because it cannot properly read the temperature of the water flowing through it due to a sensor connection issue.

Your boiler has detected an internal electronic error during a safety self-test and has shut itself down to prevent unsafe operation.

Your boiler has detected an internal software or safety check failure and has shut down to prevent unsafe operation.

Your boiler is struggling because the electricity supply it is receiving is weaker than it needs to operate reliably.

Your boiler's internal computer chip is not communicating correctly with its main control board, which prevents the unit from starting safely.

Your boiler's computer is having trouble communicating with its internal memory, which prevents it from safely operating your heating and hot water.

Your boiler has detected an internal communication error and has safely shut itself down to prevent it from operating incorrectly.

Your boiler is failing to detect or trigger the heating process required to provide you with hot water.

Your boiler's electronic control system is failing to communicate with its internal components, meaning the boiler has stopped working to protect itself.

Your boiler has detected that the burner is running at its maximum capacity for too long, causing it to proactively shut down to prevent overheating.

Your boiler is struggling to detect the flame needed to heat your water and has switched itself off for safety reasons.

Your boiler has identified that the internal water pump is not the correct type for this specific model, which is preventing the system from operating correctly.

Your boiler is struggling to accurately monitor the temperature of the water returning to it, so it has stopped working to prevent potential overheating.

Your boiler has detected a faulty electrical signal regarding how hot the water is inside the system and has stopped working to prevent damage.

Your boiler has lost the ability to measure the temperature of the water inside it, so it has safely shut itself down to prevent overheating.

Your boiler has detected an electrical fault with the sensor that tracks the temperature of the water inside it, causing it to stop working to stay safe.

Your boiler has lost communication with its internal temperature sensor, so it has safely shut down to prevent overheating.

Your boiler's computer has detected a serious internal processing error that is preventing it from operating safely.

Your boiler has detected an internal software or electronic communication error that prevents it from operating safely.

Your boiler's main control computer is experiencing an internal error and cannot operate safely, meaning your heating and hot water will not work.

Your boiler's internal computer is experiencing a communication error and has shut down for safety to prevent incorrect operation.

Your boiler's internal computer has failed to automatically adjust its settings to ensure it burns gas safely and efficiently.

Your boiler is struggling to start the internal fire necessary to produce heat, meaning it has safely shut itself down to prevent gas from building up.

Your boiler is struggling to detect the flame accurately while it tries to set itself up, meaning it cannot safely start your heating or hot water.

Your boiler's internal computer is failing to talk to the part that creates heat, meaning it cannot start up.

Your boiler is failing to light the internal flame needed to heat your home's water.

Your boiler has detected a problem with how it tracks its own flame, causing it to shut down for safety purposes.

Your boiler is currently stuck in a diagnostic testing mode used by engineers rather than operating in its normal heating mode.

Your boiler has encountered an internal electronic error that is preventing it from operating correctly.

Your boiler is struggling to control the gas flow needed to heat your home, so it has safely shut itself down to prevent any issues.

Your boiler has detected an issue with the control system that regulates the gas flow, meaning it has switched itself off to stay safe and is currently unable to provide heating or hot water.

Your boiler has stopped working because the flame inside went out while it was trying to heat your water or home.

Your boiler has detected a communication error between its internal electronic brains, causing it to shut down for safety.

Your boiler has detected an internal electronic or controller glitch that is preventing it from running safely and normally.

The internal computer in your boiler has encountered a major software error and has stopped operating to prevent further damage.

Your boiler's internal computer is experiencing a communication error, meaning it has safely shut down to prevent incorrect operation.

Your boiler's electronic control system is not receiving the correct amount of electrical power, preventing it from starting safely.

Your boiler is struggling to pump enough water through the system, meaning it cannot heat your home or provide hot water effectively.

Your boiler has stopped working because it cannot detect that the internal fan, which is essential for safely venting exhaust gases, is spinning correctly.

Your boiler is struggling to work because the electricity supply it is receiving from your home's wall socket is weaker than it needs to be.

Your boiler's computer memory chip is not being recognised or is mismatched, which prevents the system from starting up.

Your boiler's computer chip is not communicating correctly with the main control board, which is preventing the system from starting up safely.

Your boiler is struggling to stay lit when it is running at its lowest power level, often causing it to shut down for safety.

Your boiler has attempted to ignite several times but is failing to stay lit, so it has shut down as a safety precaution.

Your boiler has tried to start up but cannot detect a flame, meaning it cannot provide heating or hot water.

Your boiler is repeatedly trying to stay lit but failing, which means it will stop working to keep you safe.

Your boiler is having trouble confirming that the burner is lit safely, so it has stopped working to prevent any potential risks.

Your boiler has attempted to start but failed to detect a flame, meaning it cannot produce heat or hot water.

Your boiler has attempted to ignite several times but is failing to stay lit, meaning you currently have no heating or hot water.

Your boiler is trying to fire up at a high rate, but it cannot detect a steady flame to keep it running safely.

Your boiler has detected an incorrect or incompatible internal configuration setting, which stops it from operating safely.

Your boiler's internal settings or water system configuration have not been properly recognized, which stops it from operating correctly.

Your boiler has detected an internal safety error within its main control system and has safely shut down to prevent potential hazards.

Your boiler has detected an internal electronic error and has safely shut down to prevent further issues.

Your boiler's internal computer has encountered a critical error and can no longer control the heating system safely.

Your boiler's internal computer has encountered a software or electronic communication error that is preventing it from running safely.

Your boiler has stopped working because it cannot confirm that the internal fan, which is essential for safely exhausting gases, is running correctly.

Your boiler has temporarily stopped because the internal fan needed to safely clear combustion gases is not running properly.

Your boiler has detected that the temperature reading from its internal pipes is incorrect, so it has safely shut down to prevent potential overheating.

Your boiler has detected that water is not flowing through its internal heating system quickly enough to operate safely.

Your boiler has shut down because the water circulating inside it is getting much hotter than it should perfectly safely be.

Your boiler is heating up too quickly because the water inside cannot flow away fast enough to cool the system down.

Your boiler has detected that the water is heating up too quickly or unevenly, causing it to shut down to prevent overheating.

Your boiler has stopped working because the water pressure inside the heating system has dropped too low to operate safely.

Your boiler is struggling to work because the electricity supply coming from your home's wall socket or wiring is weaker than it needs to be.

Your boiler’s internal computer is experiencing a communication error or software glitch that is preventing it from operating correctly.

Your boiler's computer is experiencing an internal error and cannot operate correctly, which means you currently have no heating or hot water.

Your boiler has completely locked itself out for safety reasons and stopped working, meaning you currently have no heating or hot water.