|Potterton Powermax 115 boiler.....help!!!!!?|
I have switched on the central heating this weekend for the first time since MArch. The hot water is and has always been fine, however the central heating going on has caused the system to go off repeatedly. The error message I get on the readout is A.40, which according to the manual is 'System Response Fault'. The suggested action is to 'Open Radiator Valves' then reset. I know nothing aout plumbing, is this the same as bleeding the radiators?