Medium
1022 on Worcester Bosch Greenstar 4000

Your boiler has lost the connection to the temperature sensor in your hot water tank, meaning it cannot tell how hot the water is.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

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

Cylinder temp. sensor faulty or contact problems

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

1021View →1023View →

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