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Mend Ferroli optimax 25 c Fault Code Water Pressure

how do i fix my broken boiler?

I have a Ferroli optimax 25 c boiler, it has stopped working and showing fault code F37.

The manual say this is due "incorrect system water pressure" and the cure is to "fill the system"

i have no idea how to do this can anyone please help me.

Ryan
December 2010
FerroliFerroli optimax 25 cHeating, Home Heating SystemsFerroli Fault Code Water Pressure

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