I have a problem with my Drayton LP241 programmer as it has no power ie all lights off. It is a gravity CH system, Worcester Bosch conventional boiler, the system has two motorised valves one for CH the other HW. All these controls are in the airing cupboard with the hot water tank.
This morning noticed that the heating didn't come on and saw that the programmer had no power. The programmer is powered through a 3amp fused spur. The spur is also wired to the immersion heater switch. Checked the fuse and it had blown. Changed the fuse and switched on - the programmer came on very briefly, heard one of the motorised valves start to operate, then the fuse blew afer about 1 second.
Any ideas please? Is the problem with the programmer, a motorised valve or a short in the box where all the wires from the spur, valves, and programmer are? The system was working fine, nothing was touched before this happened.
This morning noticed that the heating didn't come on and saw that the programmer had no power. The programmer is powered through a 3amp fused spur. The spur is also wired to the immersion heater switch. Checked the fuse and it had blown. Changed the fuse and switched on - the programmer came on very briefly, heard one of the motorised valves start to operate, then the fuse blew afer about 1 second.
Any ideas please? Is the problem with the programmer, a motorised valve or a short in the box where all the wires from the spur, valves, and programmer are? The system was working fine, nothing was touched before this happened.