Great minds think alike that is exactly the same stat as i was going to suggest last night but found Honeywell had up dated all there stuff
thats why i was suggesting the t4 as being battery powered its just a make or break relay for the two wires.
And whilst doing this i checked my programmable stat and now the times are all to pot i cant change the time it gets to 10am then jumps to 00.00pm looks like i am going to be buying a new one ow but they have changed the design
great minds , urs will be , mine was fried years ago, lol
plus ur right there with regards to the updates , blimey they have changed , see the CM927 is still around , that’s the one I’ve still got but wow £130 now
what is the model ur trying to change the times on plse , as sometimes u can reset them but of course depends what one u have
plus goes without question would never wish to try and teach u how to suck eggs mate as I know ur very knowledgeable
funny enough always found the wiring on some of the old vaillants a-bit confusing , think they got better but mainly fitted worcester , plus those old vaillants that had 4 x pcbs where fun to fault find
remember the old puma and the dry circuit board that failed, use to just resolder the joints where the live and neutral came in , that was unless the board wasn’t fried, lol, or those bloody wax stats
worked for keston boilers for a little while, biggest pile of junk ever
