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