Medium
252 on Worcester Bosch Greenstar 8000 Style

The boiler's internal computer is experiencing a memory error and needs to be restarted to clear the fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Internal watchdog error

DIY fix possible

Locate the power supply to the boiler and switch it off at the fused spurWait for approximately 60 secondsSwitch the power supply back on and allow the boiler to complete its reboot sequence

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