What the manual says
Manufacturer manualSignal from flow and heat exchanger temperature sensor outside the permissible range | Connect the connecting lead correctly.
Shared across the Greenstar 8000 range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Related fault codes
All 107 fault codes on the Greenstar 8000 Life Regular
Seeing a different code? Every code this model can display, in one place.
1-A21-d31-d41-E11-E21-E31-E41-EA1-Eb200201202203204208214224227228229232233234235237238242244245246247248249250251252253254257258259262263265268269273281283284306357358360362363604815101010131018101910221023102510371068107010711072107510762085290829102914291529162920292329242925292629272928293129402946294829492950295129522955295629572961296229652965 B29662966 B296829692972D4