our electicity has been down f75 problem code now occured?
no electricity for 6 hours then it finally is fixed however now f75 problem code happened on boiler, i have brought water pressure back up but its still not working no hot water???? help pls....
fill water 1.2 bar,open big nut on pump just one turn let water come out ,look like air in system,open auto air vent next to pump ,bleed radiators ,if still problem than its water sensor defective,more likely its air in system
