Just another update, I REALLY SHOULD READ THE INSTRUCTIONS!
i hadn’t copied the on/off times to the different days so it was running on the factory presets.
Again, thanks for the help.
Ok, having taken off the faceplate to take a photo of the current wiring, it all seems to be working ok now.
Fingers crossed it stays that way, if not, I’ll be back!
Thank you for the help.
Thank you for response.
Unfortunately not. Is there another way to test?
Following the Honeywell replacement wiring diagram it shows the green/yellow wire from 7 to 1. Is there a reason why it should be in 2?
Hi, I decided to replace my old ST699 programmer with a ST9400c. I followed the attached diagram but I have no CH off wire. The CH now runs constantly even on the timer. Any ideas Please?