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Greenstar Highflow 440?

d5 code appeared, pressed spanner button till red then pressed ECO -- 11 appeared but still the pump does not come in - what ndoes this mean?

Alastair
February 2023
GreenstarHeating, Home Heating SystemsHighflow 440 Code
It's in here:

https://www.worcester-bosch.co.uk/support/literature/download/6720818076

Check the condensate pump and pipework are clear and functioning OK.

Dndbdh
February 2023

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