Medium
No code 380 on Worcester Bosch Greenstar 12i System

Your boiler is confused because the water coming into it is currently registering as hotter than the water it is trying to heat up to send to your taps.

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

Inlet DHW temperature higher than the DHW outlet temperature.

Engineer required

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

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