BoilerFaultCodesYour boiler's internal computer has encountered a memory processing error, causing it to shut down for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: CRC error
What causes this fault?
This fault occurs when the boiler's main control board experiences a data corruption issue, meaning it can no longer safely read its own operating instructions. It is usually caused by a hardware failure within the electronics or a sudden electrical surge that has damaged the board's memory chip. Because the boiler can no longer verify its safety parameters, it shuts down instantly to prevent unpredictable behavior.
DIY fix possible
Turn the boiler power switch off at the wallWait for 60 secondsSwitch the power back on and press the reset button
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Could it be time for a new boiler?
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