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the fuses had been taken out plumber put them back in again but fault is there - not sure if wiring was ok to start with as the property was reposessed

thankyou - any idea where to buy a new one if i need it

Hi, I recently bought a property and it has the smartfit system insalled - can anyone tell me if they know what the F12 fault is as it cuts out the system when the boiler tries to fire up