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