10 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Ideal Classic SE
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Your boiler has lost power completely because an internal electrical safety fuse has popped, likely due to a wiring fault.
Your boiler has detected that a vital internal temperature sensor is disconnected or has failed, preventing it from heating your home safely.
Your boiler has detected that the internal fan system is stuck on or the air sensor is giving an incorrect reading before the boiler has even started.
Your boiler is receiving a signal to turn on and heat your home, which is a normal part of its operation.
Your boiler is receiving electrical power and is currently in its normal standby mode or operating state.
Your boiler is currently trying to light the flame and is showing you its progress, which is a normal part of its starting process.
Your boiler has lost power to an internal safety sensor, meaning it cannot confirm the fan is working and will not ignite for your safety.
Your boiler has lost power to an internal safety sensor, meaning it cannot start the ignition process for your heating or hot water.
Your boiler is getting too hot and triggering a safety switch to shut it down to prevent damage.
Your boiler is unable to safely clear exhaust gases, which is preventing it from firing up to provide heating or hot water.
BoilerFaultCodes