Central heating on overnight

Hi all since firing up the heating in October, it’s staying on overnight. I drained the system down to reposition the bathroom Radiator, and decided to change the pump as it was getting hot even when the pipework each side was warm, when I removed the pump it was badly scaled up. Both motorised valve have also been renewed with genuine Honeywell ones. I’ve also rewired the main junction box as the old one was broken and full of block terminals loose inside. The room stat is working fine but the the heating doesn’t go off via the programmer old Honeywell one.
So I’m thinking the programmer is past its best or I’ve done something with the wiring, although I’ve checked it. The system is a conventional potterton boiler with 2 x 2 way motorised valves, room stat, cylinder stat and a basic Honeywell programmer. Any ideas please

 

Hi Mike, I don’t think so, I’ve double checked the timings on the programmer. I’ll try removing the timer and just leave the back plate on the wall. The lights seem ok on the timer

 

Yes I have a good multimeter to use

 

I’ll have to check tomorrow as my meter is at work, I’ll try that test

 

With the programmer off the valve brown and orange are zero volts, but the grey is 240(permanent live)
With the programmer on the results are the same

 

All working via the thermostats, boiler clicks in as normal when the room stat is turned up a tad even when the programmer is off

 

I think I’ve found it with your help, the room stat red and programmer red we’re both connected to a live, so my bad when I changed the wiring box. Thanks for your advice and help, you’ve saved my bacon