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Mend Ferroli Combi 77 FF Boiler Heating Burner

no hot water ?

pilot was on. turned on tap no main burner maybe air pressure switch as number 7 led is not on.now i have no pilot light , the make of boiler is ferroli combi 77 ff

d brown
July 2010

Ferroli Ferroli Combi 77 FF Heating, Home Heating Systems Combi Boiler Heating Burner

Best I can do in sequence, I no longer keep anything on this boiler

Is water flow switch operating?
Does the pump operate?
Does fan go from low speed to high speed?
Does the FPS make?
Is there 24vdc to the gas valve?

Go through these in sequence (electrically testing where required) and you will find the problem.

Carefree
July 2010

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Ferroli Combi 77 FF: No Hot Water & Pilot Issues