Recent content by Simon Shaw

Thanks all - RFG100 it is then. The whole idea of the wireless stat is so that it can be in the Living room, as the Landing (where the current stat is) can be a very different temperatures (either much hotter and colder) than the Living room, and I don't really want to start having to get wires...

Yes - been away for a few days, and then tried to trace / figure out the current wiring as best I can.

Thanks I'll give it a go and see, but I was assuming both acted as switches - and at the moment both the programmer needed to be on and the stat to be calling for heat. By changing it as suggested I was thinking only the BDR91 would be acting as a switch, and therefore the boiler would fire...

I think I must be missing something here. The current wiring is mains to ST9400C Programmer to Stat. and from Stat to boiler as I can make it out. At the moment the Programmer must be on and the Stat calling for heat for the boiler to fire. If I swap the current stat. for a BDR91 but make the...

It's not that easy to trace the current wiring - the Programmer is next to the boiler downstairs, but there's also a 10-way junction box under the hot water cylinder upstairs - but all the wiring goes into the walls / under the floors, so it's hard to tell what is running where. The BDR also...

I want to install a BDR91 receiver unit where the old thermostat was and don't want to have to start trying to move the existing cables. It all works fine - but it would appear that the live feed is only on / live when the current Programmer is on - when the Programmer switches off there is no...

Thanks for all the advice and suggestions. I'll give it another go this coming weekend when I can have the power off for a while and will update after that.

Hi - thanks for the quick replies. Boiler is a Potterton NetaHeat 10-16. Yes I've had the front cover clipped on when powered up - I assume that's what you mean by having the PCB clipped into place ? Yes I have a Programmer is use too, but the existing cable is in the wall so hard to tell...

I'm attempting to replace a very old traditional thermostat with a Honeywell BDR91 (linked to a Honeywell Y87RF2024 wireless thermostat). The wiring to the current thermostat is very simple - Neutral, Live and a "Switched" Live feed to the boiler, and I'm sure which wire is which on the existing...