I have moved into a house with a gas boiler controlled by a timer, and a hot water tank.

The radiators will come on as required to meet the desired room temperatures only when the timer has switched the boiler on.

I hate this system! I can't have different temperatures at different times. I have to predict when it will be cold, or run up the stairs to turn the boiler on.

In my old home, I had a Combi boiler. I could set the desired room temperature for 6? different time periods, and the boiler would come on when required.

Is there a smart thermostat that can do that? Even better if it can do it independently for different zones

Thanks for any suggestions

I’m a newbie at this and figure it’s not a hard DIY. Just don’t know much about wires. I’m smart enough to turn off the breaker and boiler lol

Changing old mechanical thermostat heat only for electric baseboard heat. Seen in picture.

Wires from the wall is black, white and ground it looks like. So guess it’s considered a two wire system.

I’m looking at two in amazon:

Honeywell Home RLV4305A1000 (Programable) https://a.co/d/dfKaGMT

Honeywell T410A1013 (Non-Programable) https://a.co/d/1bhfv2p

1. I prefer going with the Programable. Can I use it?

2. Both thermostat show two black wires in the back. Which connects to the white wire?

3. What happens to the ground?

Thank you!

Hi everyone, I'm having trouble connecting my Honeywell T6R to my pellet boiler. The thermostat's instructions present 4 diagrams for different setups/connections, depending on the type of boiler. The objective is to have the thermostat commanding the pellet boiler to ignite when it detects that the room temperature is lower than a defined value and commanding it to modulate when a defined value is met. Does anyone have any experience with this? I'd greatly appreciate if someone would guide me through it. Thank you in advance!

P.S. I found somewhere online saying that this thermostat is not compatible with pellet boilers, but I've also seen someone claiming they were able to do it...

Hello! Does anyone any idea what brand this thermostat is. Tried google image search but the logo seems to plain to get any proper results. (We've asked the developers but they've been completely unreliable...) Two rooms are set on holiday mode and we can't seem to be able to turn it off. Thanks! :)

Moved into a new apartment, it has a PRO IAQ T705 installed. I was hoping to find a smart thermostat, the compatibility checker on nest, ecobee, and Honeywell say that they’re not compatible. Has anyone replaced used a smart thermostat for a HVAC system with the wiring posted below?

I have a Honeywell TH8320R1003 thermostat that is connected through a THM4000R1000 wireless adapter to a Honeywell Zoning system. I am looking at getting a Redlink Gateway so I can control the thermostat remotely from my phone/computer. When I go to my thermostat's wirleless options, it does not give the option to "add device", it only shows it is connected to the Zone system.

If I add the Redlink, will the "add device" option appear? Or is there a different way of connecting the Redlink that does not require adding through the Thermostat?

Hi guys, i just moved to a new home a few days ago and I noticed that my thermostat not really measuring the correct temperature. I tried to locate its temperature sensor to clean it but I have no idea where they put it. It’s a Vaillant VRT350 device. Can you please help me what could be the problem or where should I look for the sensor? Thanks

I have a 'den' or 'family room' that exists between my house and my garage. It may have been added on a slab after the main house was built. Nevertheless it is not connected to the main house's HVAC system, but it has baseboard electric heaters along one wall to keep the room nice in the winter.

Current Thermostat

It has one of the classic rotary thermostats connected to it, allowing on/off and setting a threshold temperature. Wiring is a single white wire and a single red wire. They connect to the transformer circuit down mounted to the side of my breaker box.

The problem here is, I want to turn it on about 30mins before my kids get home from school, and I want it to turn off at night. I only have manual on/off. Many times I have forgot to turn it off and had those beasts sucking electricity for several days before I realize it, and other days I come out to the room to find it freezing cold because I didn't think to turn it on 30 mins earlier.

I want to install a new thermostat, but the way this one is wired is not typical of the newer crop of thermostats. There is no C wire, hell there is no power to the thermostat in any form as far as I can tell. It's just completing a circuit on that red and white wire between the transformer and the floor heater I think.

I'm having a hard time finding a thermostat that will help me here. Just having a daily timer would be enough (on at 2:30PM off at 5:30PM), but a full 5/2 schedule or WiFi smart model would work too. I just need more control. What are my options? The cheaper the better.

(Ignore the dirt) This is an old house, so the entire HVAC system has been updated recently to a smart thermostat system. The guy said that all I have to do is push whatever wires into the wall and put a blank faceplate over it.
in order to remove this, do I yoink the knob out before attempting to unscrew the plate?

https://preview.redd.it/lsfud3i4gx1e1.jpg?width=2448&format=pjpg&auto=webp&s=1f4f821e5b97d2f95b5487d80ccc862c82c57305

I was trying to programme my EPH Controls thermostat to come on at certain times and I've completely screwed it up.

It's currently set to automatic and to come on when my flat drops below 14°C, which is how I want it.

But it's twice now come on randomly when I didn't want it to and when the flat wasn't below 14°C.

Whenever I change the temperature on it, it also now displays the message "Ou Er" which it didn't used to.

Can't find any info on what to do online other than to do a reset, which doesn't work. Interestingly when you type "EPH controls ou er" into Google one of the suggestions that comes up to finish the sentence is "reset not working", so clearly I'm not the only one with this problem.

Nothing about this issue on the manual.

Hello everybody,

Any ideas on which device could replace the heating timer? Just need the on/off function, no separate radiators and stuff like that. And it has to be wifi accessible and of course it must have the simple timer function. Later on I'll try to control it via VPN remotely but that's not a must.

Any ideas welcome

Thank you

https://preview.redd.it/qq0mm8trmw1e1.jpg?width=1836&format=pjpg&auto=webp&s=8505672089be7c6449ecf5f5ede1ea0d9dd91d8f

https://preview.redd.it/juvcevxzdt1e1.jpg?width=959&format=pjpg&auto=webp&s=62b204232134624bb0f5c41a502f2c217ad242bb

Hi all, yesterday I installed the Evohome system in three of my rooms. In the room called "Studio" (highlighted in the picture), I am using the Evohome central unit as temperature sensor (so NOT the temperature sensor in the actuator valve). However, this morning when I went to the Studio I saw that the temperature reported by Evohome was 22°C, while my ThermoPro reports 19.5°C, and I have to say that the room felt much colder than 22°C. That's a difference of 2.5°C, which is quite high, and I bought the Evohome to have a proper temperature in each room. Has anyone noticed similar issues when using the central unit as temperature sensor?

EDIT: Meanwhile, the temperature in the Bedroom, measured by a DT4R, coincides with the one measured by the ThermoPro. Is it then just the central unit that is very bad at measuring the current temperature?

https://preview.redd.it/su7zpqftgt1e1.jpg?width=1280&format=pjpg&auto=webp&s=8466cf1d1969918d5375445d80a529e7a4e51a62

The heating Is not working (tried new batteries, still wont work)

For example when night get cool such as 65. I would like thermostat to turn on for a few hours and then turn off.

That is not nest. Which have now and waking up adjusting it throughout night. Which is super annoying.

If there is something that turns on without people heating let me know please.

https://preview.redd.it/a5cghcdeuj1e1.jpg?width=4032&format=pjpg&auto=webp&s=c62ae426d15a9cb5d99e63638c9b7db0aeeeb479

https://preview.redd.it/m9lbp3deuj1e1.jpg?width=3024&format=pjpg&auto=webp&s=05387fc3d1222db7f2b2bc812882fd823d8b8006

I'm trying to work out how my thermostat is wired so that I can upgrade the unit as the battery holder section has failed on the current one. According to my landlord I have a gas furnace with electric AC, they couldn't tell me the model number but are sure I don't have a heat pump. Prior to the thermostat failing, heat and AC were working. But, the wiring seems strange, I have no wire to the Y terminal and I have a light blue wire to the O terminal. Has anyone seen this before in a non heat pump setup? I thought O was used to switch between cooling and heating in a heat pump setup. The thermostat model is a White Rodgers 153-7758. Thanks in advance.

someone explain ts to me?

I'm hoping to upgrade to a smart thermostat that I can control by app if needed, but do not want to pay a monthly service fee or use any voice-based apps like Alexa or Siri. Does that exist? All of the smart ones I read mention the voice apps, but I'm not sure if they are required or just optional. Recommendations?

Trying to install a smart thermostat to replace a non WiFi connected thermostat. The wiring on the control board is not what I expected. There is one red wire connected to the same terminal as a yellow. A second white wire is also connected same terminal as the blue. When our old thermostat would come on there would be a ”second stage” for heating and cooling but there is only one yellow and one white wire at the thermostat side. Our old downstairs thermostat has the blue wire connected at the green terminal. The old upstairs thermostat has the green correctly connected In the green Terminal.
I want to know how to connect the wires to the new thermostat. Hooking up the wires W1 and Y1 with the blue as the common resulted in no power to the thermostat. I bought an AC adapter and it said to connect it to the Rc and the C ports on the thermostat which got the thermostat to turn on. However heating, cooling, nor the fan come on when controlled by the thermostat. There is an adapter in the attic and a “zoned thermal equalizer” which I don’t know if it affects the wiring. I have attached photos to better demonstrate the situation. Thanks for your help.

https://preview.redd.it/n8dgoz6gmc1e1.jpg?width=640&format=pjpg&auto=webp&s=adce3074552c776a3dea92e5305d1225edc7b0b7

https://preview.redd.it/mw94qt4jmc1e1.jpg?width=640&format=pjpg&auto=webp&s=6bd62c5eea7946c5bd7cfbecb354484d63fc8d36

Left side connectors go to thermostat

https://preview.redd.it/n74m7e0mmc1e1.jpg?width=2155&format=pjpg&auto=webp&s=1ab1249d0df6776945f2f3cb317a83619b4fa9ce

downstairs old thermostat with blue going to green

adapter in attic

equipment in attic

We have freezing winters, and I would like to find a programmable thermostat for our heating system that can never be turned completely off. Does such a thing exist?

My home had an old, simple Honeywell thermostat that was working completely fine. See the photograph attached for wiring information. I am in Texas, so I have both an external AC compressor and a furnace, with a forced air system.

I bought an Amazon Smart Thermostat and wired it exactly as shown in the other diagram attached: blue wire in the C terminal, yellow on Y, green on G, white on W and red on R. There is a switch to the left of Rc that, when pulled up, is supposed to short R and Rc, effectively making them the same. This switch is up.

My issue: heating and fan work perfectly, but the compressor never turns on when the AC is activated. If I set the thermostat to cooling, the fan will turn on but the compressor doesn't run at all. I am aware of the "delayed start" feature and waited (sometimes for multiple hours) to see if the compressor would turn on and it never did.

For testing purposes, I also:

• Bought another Amazon Smart Thermostat (in case the hardware was the problem). Same issue occurred.
• Tried plugging in the red wire straight to Rc. Same issue (didn't test the heating, though, but I assume it wouldn't work).
• Reinstalled the simple Honeywell thermostat I had before. The system works perfectly.
• Checked my other home, where the AC works fine with the Amazon thermostat; there, the white wire is connected to O/B instead of W. NOTE: the O/B and W wires appear to be the same in the Honeywell thermostat, but different in the Amazon Smart Thermostat. Wondering if I should just give this a try.

The way I wired my Amazon thermostat (including turning the Rc jumper up, shorting R and Rc, as per the picture)

Old wiring - Honeywell thermostat. Works perfectly.

I’m so ignorant… is the FRE the off? or should it be all the way to left on low?

Hi. So i have a Saunier Duval Semia condens 25A boiler and i want a better thermostat with wifi.

Anyone can help, if the T6R is compatible with that?

Thx

Moved in this house, trouble setting up heat. Tried everything with no luck. See pics , is it normal?

My house was built in 2001, so this has been the original thermostat.

I'm trying to set it to auto for the mornings and nights.

I'm wanting to get it updated sometime soon, as I think it'll be better with one that'll be easier to use.

If anyone still has this type let me know how you set yours, because tbh I kind of find the instructions kind of confusing.