MWPHS.co.uk is a trading name of Mid Wales Plumbing & Heating Supplies Limited.
MWPHS are based in the heart of the Montgomeryshire (Wales, UK) and specialise in selling the very best heating and hot water technology on the market today.
We run 3 online shops (MWPHS.co.uk, The INTERGAS Shop and The Smart Thermostat Shop) and create content on new and innovative products. We also create help videos on existing products we sell, when we identify the existing help videos or manufacturer videos are missing important points (or there is no help content).
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Hi. I’d like to pair one thermostat downstairs and one upstairs to the same BDR91 box. Do I just do the same process for each thermostat or if I do this process for the second thermostat would it clear the first one? Tia
Hi Richard. I fitted one of these with a vaillant heat pump recently and I piped it up A to rads and B to cylinder, I wired it the opposite way around to what you suggested. It seems to work fine but is there any downside to doing one way or the other?
Hi Andrew! As per the manufactures instructions, the black wire is defined as the 'switch live' wire. Fitting it with port B to DHW and wiring it with the brown wire as the switched live wire will work, but in the interests of keeping things standardised, on your future installations consider keeping port A for DHW and black for the DHW switched live (the next man or woman that comes along will thank you!).
@@MWPHS Thanks. I’ll reverse it when I go back to do the service. Another thought I had about the way I’ve done it, it’ll mostly be in heating mode which in my case will be fighting the spring action of the body. I’m not sure if that’s of any consequence 🤷🏻♂️
@@andrewalderson1 when fitting it with the A port to space heating, the cartridge would need to be actuated down to close off DHW which could potentially reduce the life of the cartridge over time. The way I would be fitting them is how I have described in the video.
Hi (again), we have a single dying CM927 thermostat paired to a BDR91 receiver for a gas boiler. Is it possible to simply replace with DT4R as shown here?
Hi, we have a dying CM927 (up button for temperature no longer works) and it is paired to a BDR91 receiver. (Gas boiler). Can we just buy a wireless thermostat - either Pro or T3R wireless and pair it to the existing receiver? Thanks
T3R won’t work, but if you buy this one we include instructions how to pair it to your existing BDR91 - theintergasshop.co.uk/home/99-cms927-7-day-wireless-programmable-room-thermostat-cms927b1049.html
Would you be able help please. How do you connect the thermostat to the programmer if you don’t have a relay box fitted, mine was fitted without one had been ok, now have a flashing signal but won’t connect
Will this room thermostat be good to replace my dirty old potterton prt100 thermostat? I have red, black, yellow and earth into my old thermostat. Thanks
What to do when your thermostat shows an error - SYNC? The green light on the heating side is not working. I tried everything to turn it on but it doesn't help. How can I start the heating?
I don’t think it’s faulty bcz earlier heating was working. Anyway, do you provide any home visit service to sort out our heating system from Honeywell? We are from London. How can I reach Honeywell customer service in London?
@@AparnaAmbre I'm just an ex-heating installer on RU-vid creating these videos. Best thing to do is contact Resideo (Honeywell Home) and see if they have a trained installer in your area - 0300 130 1299.
Hi, do I need to use the relay? I have a building with 8 rooms and each room has 2/3 zones and I’d like each room to be able to set their own temperatures, as the TRVs currently installed are inaccessible behind rad covers. So ideally each room would have a controller, sensor in each room and HR92s on each rad.. Do I need the relay for this, I’m not sure the WiFi would reach the boiler room. Hope this makes sense.
Thank you very much. Just what I needed. Noticed the flashing lights on the receiver, but couldn't find the instruction manual anywhere. Did the job in no time. Thanks again.
Hi there, I hope you can help me. My DT4 is blinking with error code “F 22”. I can’t find anything on the web about it. Do you know what it means? Cheers
Hi, I do hope that you can help. I have just watched how to remove a Honeywell clicky thermostat and the video was 100% accurate. It shows/I have red, yellow and blue wires powering it . The rest of the house setup is exactly as you show … I have the Honeywell timer for hot water/heating. Can I fit the thermostat you suggest and is so what are the wiring positions? Thanks in advance.
The DT4 can replace any existing non-programmable thermostat. Unfortunately, I can only comment about the thermostat we used in the video (which is also the equivalent to a Honeywell T6360 clicky stat). The wires that are in wiring terminals 1 & 3 on the existing thermostat, are the live and switched live wires. You use these wire (and these wires only) in the DT4 switching terminals, the rest of the wires are made safe as I've shown. If you need any technical support with the DT4 product, please contact Resideo on 0300 130 1299. Thanks for watching the video.
If my cm927 is not working correctly and I replace with another cm927 controller Will the replacement pair without disconnecting the original controller
I’m glad you backed yourself up with not 100% on the voltage pen but a multimeter isn’t a HSE GS38 approved tester to confirm the electricity is dead - should be using a 2 pole voltage indicator or test lamp and a known source such as a proving unit
Thanks for your input. I'll be honest, I knew this but I'm dyslexic and mixed up the wording on the video. I'll make sure on the next video I use the correct terminology.
Not working for me. Same old thermostat (THR830T), same wiring, connecting Live to A and Live out (load) to B but nothing is happening. Not sure if it matters that I have a zone valve on the system, not sure if wiring is different in that case, but I have a programming unit similar like in this video, it is on continuous on but no luck 😢
@@MWPHS I made it work, but it is weird. On the old thermometer, on your video on number 2 you have blue neutral wire and I have blue and black together on 2, and the new one is working ONLY when those two (blue and black) have contact... So I connected them and isolated them with tape and it's working. No idea why...
@@MWPHS In short, I inherited electric underfloor heating, but no idea if it is working. The old one is a honeywell t6360 and I would like to replace it but no idea with what and what fuse to use on it.
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My son has just moved into rented house and it has this Honeywell thermostat,the he gets hot water but no heating even tho the thermostat display clicks and shows the heat symbol as if it has come on ,i have searched the house and cant find the relay box you speak of in this video. Is the relay box a must for this thermostat to work ? Soryy if this is a stupid question but i know nothing of how these things work 😊
The thermostat in this video is wireless, but the one your son has is probably a DT90E. This might help ( support.resideo.com/s/article/Where-can-I-find-the-user-guide-for-the-DT90E-thermostat?language=en_US ).
No, T6 is a Ramses 3 protocol thermostat so only works with the R6H receiver ( www.resideo.com/gb/en/products/comfort/thermostats/thermostat-accessories/r6h911rf4018-2-channel-wireless-receiver-box-r6h911rf4018/ ).
I’ve done all steps one by one which is fine but at the end on the relay box and light didn’t on. Do you know why or what’s the problem with it ? Thank you for help
Sometimes, you have to turn the thermostat all the way down and then all the way back up again. Also make sure the thermostat is set higher than the room temperature. If you need support, call 0300 130 1299.
Please can you make a short video showing lay person how to operate the thermostat once it is installed. Eg. What are set temp adjust buttons for / what is eco mode in reality etc ? Plus/ Minus / Flame etc are clear but what about all the other functions? Thank you 🤔😊
That's a BDR91 thermostat! Not like the one that your sister company MWPHS sent me!! Now, after sending it back, you refused to refund me claiming it was damaged!! My engineer only tried to connect to the Honeywell thermostats and didn't install it on the wall! Even Honeywell didn't recognise the model of the receiver you sent me when we called them to try to fix the issue. The worst is that I'm sure Waseem believed his own lies!! Your company shouldn't be ashamed!!
The BDR91 is manufactured in many different shapes under many different product codes, so they won't always look like the one in this video. Essentially they all do have the same PCB, so do work exactly the same as in this video. If you have a look at the video we did 9 months ago (ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-t-FhOwGW7Ow.htmlsi=xBGuYJCwbxrz4bQO), both the BDR91 and the DT2 wireless relay box (which is essentially a BDR91 with a different plastic fascia) are fully compatible with all Ramses 2 Honeywell thermostats. The DT2 wireless relay box supplied on MWPHS (mwphs.co.uk/product/wireless-relay-box-bdr91-replacement-replaces-all-pre-2021-honeywell-bdr91/) is fully compatible with all Ramses 2 thermostats? What was the problem you had maybe I can look into this for you? Thanks, Richard.
@@MWPHS Hi Richard, sorry if I can't call, but as mentioned to Waseem, I can only send emails when I'm at work. I ordered two BDR91, one from Amazon and one from you. Both are to connect with a DT4 thermostat. The one I bought from Amazon connected straight away to my DT4, the one I ordered from you didn't connect. We didn't install it, no screws, nothing. We did nothing to that receiver apart from trying to connect to the thermostat. I didn't check the receiver when I received it but I only noticed that it was in a bubble wrap rather than in its box like the one I received from Amazon. Waseem said that the box had been destroyed in transit... It's only when my engineer came to install everything that he noticed the difference between the two receivers. You claim that they are the same, they are not or yours is faulty...Waseem or your company keep saying you sent the right receiver but you didn't and that the receiver was damaged or in used condition. If it was damaged, ( I saw the pictures and unless, you look for it, you wouldn't noticed), it wasn't by us! I paid for a delivery postage, a return postage and a receiver that it's either the wrong one or is not working and you're refusing for a refund. As I said, next time, I'll go to Amazon, much easier and they don't blame the customer for things they haven't done.
@@alexojus I had replied to you before realising you had left our business two 1 star reviews on Google and a negative Trustpilot review? I have physically seen the wireless relay box you returned with my own eyes and I don’t think I have seen many items returned to us in such poor condition? It is completely unsaleable. It is now not about the money, it’s about the fact we are being call liars and scammers when we have refused to refund an item that has been returned in unsaleable condition. We are not Amazon, we are a small family owned heating supplier who has been running for 10 years. Some of our items are bought direct from the manufacturer as an OEM replacement. All the wireless relay boxes we supply are checked/picked to order by our warehouseman (who is called Nick, been with us 7 years and religiously checks all items before dispatch) and they are packed in electrostatic packaging to protect them from physical and electromagnetic damage. This is not bubble wrap. If you want the detail on the bags we use they are here ( www.kitepackaging.co.uk/scp/bags-for-electronics/open-top-antistatic-bag/ ). When I get into work tomorrow I will get the DT4R I use for my RU-vid videos and test the wireless relay box you have sent back for operation, however the reason you have given for return was that it wasn’t a BDR91. So is the reason for return that the item is faulty? If that is the case that wasn’t clear from the returns paperwork or discussion I had with Waseem?
I have two wired DT4s one floor of the house and one wired on another. I would like to change this one to a wireless so I can site it more efficiently. Is this possible or will the system get confused? Thanks for any advice
@@EtienneL-it2gp why would you have a mixing valve controlling the whole house? A mixed circuit is usually part of more than one zone where the temperature to the one circuit is higher than the second circuit (1x radiator circuit and 1x UFH for example).
@@MWPHS The main 3-way valve makes it possible to precisely adjust the water temperature of the whole circuit according to the needs of the radiators. My installation was designed like this.
Very clear video. Would the DT4R be a good replacement for the Sunvic TLX 2259. In particular would the backplate of the 2259 accomodate the DT4R without needing to drill new holes etc? I have a conventional boiler (Gloworm)? Many thanks.
Hi, looking at the Sunvic TLX 2259 the shape looks like it fits a standard UK backplate, so should have similar fixing holes to the DT4. Please note that the DT4R is the wireless version, the product in the video is a DT4 (mwphs.co.uk/product/honeywell-home-dt4-white-wired-tpi-thermostat-dt40wt20/).
