My radiators have started getting hot even though they are not timed to switch on and thermostat is turned right down. They are also not showing as having switched on on my boiler control panel. They only come on occasionally.
My boiler is a 4 year old Vaillant Combi.
Any advice on what the problem is and how much to expect to pay for repair is much appreciated.
My boiler is a 4 year old Vaillant Combi.
Any advice on what the problem is and how much to expect to pay for repair is much appreciated.