My CH system is running even when the CH side is switched off.
The electronic programme unit is in the off position and the OFF/HW/CH selector switch on front LHS of the boiler is in the HW only position.
However the boiler pump appears to be running all the time and the burner is firing for 6 sec every 30 sec.
The only way to stop it is to remove the mains power or to select off.
Conversely when CH is switched on this ignition cycle continues and the radiators do not get warm.
Has anyone come across this fault,any ideas?
Thanks.
The electronic programme unit is in the off position and the OFF/HW/CH selector switch on front LHS of the boiler is in the HW only position.
However the boiler pump appears to be running all the time and the burner is firing for 6 sec every 30 sec.
The only way to stop it is to remove the mains power or to select off.
Conversely when CH is switched on this ignition cycle continues and the radiators do not get warm.
Has anyone come across this fault,any ideas?
Thanks.