Mend Heating, Home Heating Systems

Mend Heating, Home Heating Systems
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Mend Heating, Home Heating Systems

F40 fault?

Boiler showing F40 on Ferroli optimax HE25S

Barry Smith
February 2023
FerroliHeating, Home Heating Systems
https://aceplumbers.co.uk/ferroli-boiler-error-codes/

Dhdb
February 2023

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Mend Heating, Home Heating Systems

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