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