topic Re: Remote Temp sensor offline in Nest Thermostats

Remote Temp sensor offline

Brandonk13 — Wed, 22 Dec 2021 20:21:02 GMT

Recently purchased a temperature sensor for my thermostat. Was able to get it connected and added to my account without issue. A few days later (haven't even had it a month yet), It just went offline. I've replaced the battery, and I've moved it to the same room and wall as the thermostat. It still won't reconnect. Anything that I can do, or should I be requesting a replacement?

Re: Remote Temp sensor offline

Raffi30 — Fri, 24 Dec 2021 20:51:52 GMT

This is the same issue I had. The only solution for me was factory reseting the thermostat. This is clearly not great because it loses all the "learning" and has to be reconfigured. I'm trying to find another way around this because this is the second time I'm having this issue

Re: Remote Temp sensor offline

Asklepius — Fri, 04 Feb 2022 18:22:51 GMT

I have the same problem, I have also seen that a factory reset is likely to solve the problem but am disappointed to hear that it happened to @Raffi30 a second time after he tried that solution...

Re: Remote Temp sensor offline

ebjustin — Sun, 06 Feb 2022 01:52:10 GMT

Same issue here. I was able to get the sensor to reconnect by resetting the thermostat but two days later the sensor is offline again. The sensor is 8 feet away. Nest battery voltage is 3.86V.

Re: Remote Temp sensor offline

Raffi30 — Sun, 06 Feb 2022 02:16:30 GMT

Yea this is very weird. At this point I don't care about the sensor since it was a free throw-in with the package I found. I'm more interested in helping Google figure out what the issue is. Mine works perfectly for about a month before losing connection, but it fails like clock work. I'm trying to work with support and offering to help debug if it's even possible to do so on my end. I asked them if I can run some kind of long term debug mode to capture what's happening. I haven't got a response yet.

Re: Remote Temp sensor offline

ebjustin — Sun, 06 Feb 2022 02:36:51 GMT

My nest is connected with two wires (boiler). I don't have a "C" wire but I've monitored the battery voltage and it's always been above 3.8v. Some folks on reddit mentioned the sensor offline issue is due to thermostat battery voltage but I doubt that's the case. 3.8v should be plenty of voltage and there have not been any low voltage warnings.

Re: Remote Temp sensor offline

jlarocca95 — Wed, 23 Feb 2022 14:45:29 GMT

I've two sensors that the thermostat loses at the same time and will not add back without a factory reset. This is the 2nd time they've done them in a month, I have another NEST at the other end of the house with a sensor and never have a problem. It's tied to one particular thermostat.

Re: Remote Temp sensor offline

Raffi30 — Wed, 23 Feb 2022 15:25:53 GMT

This is very helpful information! I was able to work with support and they sent me a new sensor. Unfortunately, I can't get the new sensor to work with the thermostat either. I was going to factory reset my thermostat to give this new sensor a chance, but now that you have confirmed my suspicion of the issue being with the thermostat, I might not bother. In my case having a working remote sensor is not that important, but I also don't want to let this go.

Re: Remote Temp sensor offline

jlarocca95 — Wed, 23 Feb 2022 15:38:20 GMT

It's a big deal to me as my thermostat is in a common area with a high ceiling. Setting the temperature to 72 lets say makes it 78 to 80 in my bedroom so having a remote sensor lets me set the temp for the room I'm in. I'm going to try to get Amazon to replace it as I've only had it installed two months.

Re: Remote Temp sensor offline

Raffi30 — Wed, 23 Feb 2022 16:04:43 GMT

Woaw that's a big difference in temp. I'm sure they'll replace it. Good luck. Just be prepared to answer a bunch of irrelevant questions and provide them with all kinds of details, relevant and irrelevant. I felt like I had to jump through hoops just to get my sensor replaced.

Re: Remote Temp sensor offline

jlarocca95 — Fri, 25 Feb 2022 14:04:34 GMT

I contacted support and they had me do a "restart" on the thermostat and my sensors came back online. I never noticed the "restart" in the menu but she also said you can hold the ring in for 10 seconds and it will restart. Not sure why the one I have in my business hasn't needed a restart in 5 years or the other two thermostats I own have never hiccupped but this one has done it 3 times in two months but if a simple restart will fix it I guess it's the way to go for now.

Re: Remote Temp sensor offline

Raffi30 — Fri, 25 Feb 2022 15:09:14 GMT

Glad you got it working without too much trouble. I thought I tried a restart and it didn't work for me. I could be wrong. I agree with you, something is not right. In about 3 months, my thermostat required 3 factory resets to get the sensor working again. I factory reset mine again and got the new sensor working, if I have trouble, I'll try that tip to reset. I'll contact support again if anything.

Re: Remote Temp sensor offline

Sethccls — Wed, 09 Mar 2022 02:27:43 GMT

Thinking there might be a software glitch causing these issues. They need to figure it out soon.

Re: Remote Temp sensor offline

Raffi30 — Sat, 09 Apr 2022 18:51:05 GMT

My new sensor has been working since Feb 24th. Well over a month. Never had this much time functioning with the old sensor. The other thing to note is that I am not using the sensor schedule feature any more. In the past when I did have trouble I was using the feature. So now I'm not sure if the new sensor fixed it, not using that feature fixed it, or a combination of the two. Anyone having this issue using that feature? Check to see if there is any difference if you stop using sensor schedule and switch sensors manually when needed.

Re: Remote Temp sensor offline

Brandonk13 — Tue, 26 Apr 2022 15:28:15 GMT

Ok, so shortly after my OP, I deleted and readded the sensor. It was there but wasn't reporting. Whatever. Today, I opened the nest app to switch my mode, and found the temp reporting in for the sensor. Wild. We'll see how well this works.

Re: Remote Temp sensor offline

Luvs2Bake — Wed, 27 Apr 2022 17:16:02 GMT

Hi! I have a Nest thermostat and 3 sensors that I purchased about 2 months ago. All was working well until last week when all 3 sensors went offline. I tried everything like you did but then I saw on this forum to reset to factory. Since I tried everything else, I removed the sensors from my app and then did a factory reset on the thermostat on the wall. I also rebooted my internet modem and wifi router.

Then I started the set up again from scratch and it worked just fine. Has been working for a couple of days now so fingers crossed!

Re: Remote Temp sensor offline

Jeff — Fri, 22 Jul 2022 17:09:51 GMT

Hey everyone,

It's been a while since we had any activity here, so I wanted to check in real fast and see if anybody was still needing help on this issue. If we still have some need of input, I'll be happy to assist.

Thanks,

Jeff

Re: Remote Temp sensor offline

Jeff — Tue, 26 Jul 2022 17:06:38 GMT

Hey everyone,

It looks like we've slowed down here. We'll be closing up the thread in the next day unless anyone else has any input or needs anything else. If so, just let me know and we can keep this open a bit longer.

Thanks,
Jeff

Re: Remote Temp sensor offline

ebjustin — Tue, 26 Jul 2022 19:31:48 GMT

I replaced the sensor, paired it with the thermostat and have not had any connection issues for the past few months.

Re: Remote Temp sensor offline

Jeff — Wed, 27 Jul 2022 17:39:33 GMT

Thanks for the input and explanation of your fix, ebjustin. It's always great to see people get these issues worked out and find out what worked.

Once more, is there anyone else looking for help on this?

Thanks,

Jeff