Ariston microGENUS 24HE MFFI Boiler Fault code A77

Philgreg · 15 Dec 2008

Checked condensate trap OK.
Changed condensate sensor on recoperator & flue sensor at same time.
Boiler about 4 years old.
Still cutting out and A77 fault code, now stumped ! ???
Is there anybody out there ?

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Ariston microGENUS 24HE MFFI Boiler Fault code A77

Philgreg

DIYnot Local

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