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ferolli modena 102?
High pressure on my Optima Ferolli 901 central heating?
falling presher?
what part do ineed?
c/h hotwater?
Can't get hot water but central heating is working fine, any ideas??
how can i fix this ?
2 amp fuse blown?
Ferroli Boiler Optimax HE 31C?
DHW running hot then cold?
DHW Run's hot and then goes cold?
shower in bathroom keeps going hot then cold then hot etc?