honeywell

Hello, My gas central heating system boiler has two main heating circuits, one for the upstairs and another for the downstairs. Each of the heating circuits are independently controlled using motorised valves which are opened and closed under the control of two Honeywell CM927 room thermostats...

The boiler is a WB GreenStar 38CDi Classic. We bought the Hive Thermostat Receiver and Hub for Combi boiler. The Honeywell had cabling to its Earth, Live, Neutral 3 and 4 terminals (terminals 1 and 2 not connect/wired). The Hive Receiver was wired the same. All paired and Hub set up...

I need some help with figuring out how to wire the new thermostat. The old one has 3 wires (red, blue and yellow) as soon on image "old_wires.jpg" I have attached the wiring diagram of the old thermostat "old_wiring_diagram.jpg" and the wiring diagram of the new thermostat...

Hi All, Apologies if this has already been answered earlier, but I cannot find a 100% confident answer. I am replacing my old Honewell BDR91 with the new Hive Mini (dual channel) Thermostat. I have Baxi 400 combi boiler at home. Attached image with my old Honewell BDR91 wiring, I have...

So I've used a wireless thermostat to activate my heating since installation, but it's just stopped working (Blank screen, no new battery's fixed fixed it) The wall mounted programmer screen flash's no signal, like it's searching for the wireless thermostat, I cannot turn the heating on at all...

Hi All I'm trying to replace Honeywell thermostats with Nest. I don't do this professionally (something similar-ish) but have a fair amount of experience. The wiring centre is simple, Neutral, Live and Earth and six wires from three existing thermostats (two each). I think the valves are...

I am having trouble with my Flex 50 panel recognising the ethernet module. It was working, but I was making some changes to the setup and removed it temporarily. Now when I connect it and go to autodetect option 72 it does not recognise if I connect or disconnect it and I cannot get it to work...

Hi there, First of all, thank you for your time. I'm looking at replacing my Honeywell T40 thermostat which serves pretty much as an on and off function on my home heating, I've a combi Vaillant boiler and the thermostat is wired to 1 (red cable) and 3 (orange cable) terminals, using the...

Hi, over the last couple of days we’ve come home and found our house at 26 to 27 degrees. But our thermostats are set to factory settings which whilst during the day should be 16 degrees. I’ve looked through the settings and nothings changed and have no idea why the house is randomly heating...

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Hello, I've got a quote for a tradesman to do this but I'd like to see how much of a direct swap out it is, as I'm happy to do it if it's as simple as I expect. So I have a Honeywell thermostat and programmer (it's a single wireless unit in the hall) with a control box just next to the boiler...

Hi i am wanting to swap the current honey will system attached to my combi boiler with a new hive one whilst I am not an expert, I am competent so believe I can swap this the same as I would a light switch or plug fitting - am I right that in the images attached, the wires would line up like...

Hi, I’ve read multiple posts about installing the Nest Heat Link to the Honeywell Smartfit. However I seem to be struggling on how to physically wire it up. The attached photo is how the smartfit is wired up currently with everything working. Can anyone offer some advice and guidance on how...

Hi We have an old Honeywell system. They keypad has a sticker on it saying Grade 3 Class II. There had been some low battery errors for a while so as the walls were being painted the opportunity was taken to replace the batteries in the sensors mentioned on the keypad. No alarm went of when...

Hi all, can anyone help... I have access to the engineer code 112233 and 1234 now after doing the reset using the method posted below on a previous post on this website: • Pulled fuse/mains power • Disconnect Batteries • Disconnect both tamper wires • Disconnected all other PIR / BELL / wires...

Morning all, Apologies, I'm aware this set up has been discussed here before. I'm looking to replace my Honeywell BDR91, ST9400s and wireless thermostat to control heating and hot water (cylinder) with Hive dual channel. I understand the ST9400s and the Hive Dual Channel Receiver have...

I have been buying cheapish Hot water cylinder thermostats in the past but have had to change a couple recently as they just packed up! So I bought a Honeywell stat but that was so inaccurate I sent it back. Bought another one and it's the same. I have probes that i have calibrated with freezing...

Hi all just changed the pump on my fully pumped system it was a like for like pump. System has 2 zones upstairs and down stairs. Turned it on pump works fine and upstairs works fine but downstairs doesn't come on at all . I opened the downstairs em valve manually but it still won't come on! In...

UPDATE: Now resolved this myself, thanks to earlier post by Muggles. I just forgot to put the additional live connections to T2 and T5. Silly mistake on my part but all working fine now. Hello I’ve just bought a Google Nest Learning Thermostat v3 to replace our old setup. Sorry, I know there...

Hi, I have the aforementioned programmer which is working fine for hot water but not for CH. It seems that no matter what setting the CH is on (timer, continuous, override) it will not come on unless it is a particular time in the evening. For example, if I set the timer to come on at 2pm, the...