Nest Low Battery Fix!

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In this video we teach you how to fix Nest Thermostat low battery issues and Nest Thermostat low power issues. There are several things that could cause your Nest Thermostat to have a low battery. Typically Nest low batteries are caused by your HVAC system not putting out enough power, or by an issue with your HVAC system that has cut off the power supply to the Nest Thermostat. A Nest low power issue can also be caused if your Nest has sat in the box for an extended period of time.
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To fix Nest Low battery or Nest Low Power issues there are a few common ways to fix the low power issue.
1. The easiest method to fix a nest low power issue is to try charging the Nest using the built in charging port on the back side of the Nest. This will typically work for a Nest Thermostat that has sat in a box to long or the power to your HVAC system has been turned off for an extended period of time.
2. If charging the Nest doesn't work you can then connect a common wire to your HVAC system. Some thermostat wires will have an extra wire run with the thermostat wire that you can connect to the C terminal on the HVAC system and the C terminal on the Nest Thermostat. If you don't have an extra wire you with the thermostat wiring you can add another wire connected from the C terminal on the HVAC system to the Nest Thermostat.
3. If adding a common wire doesn't work your HVAC system is either not compatible or is not putting out enough power to power the Nest Thermostat and a common wire transformer might be needed.
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Опубликовано:

23 июл 2024

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Комментарии : 418

@jaker2187 11 месяцев назад

The fact that this is such a widespread issue should tell you all you need to know about these products

@AtChieftain 6 месяцев назад

I'm never recommending Nest again. Garbage products

@SoundOfYourDestiny 4 месяца назад

The Nest is disgraceful trash. Even when functioning, the UI and "learning" is brain-dead and incompetent. Even worse, it's an entire computing device that you're supposed to THROW AWAY WHEN THE BATTERY DIES. Unfuckingbelievable. I have a powered (C-wire) thermostat connection, and I had to trash the Nest because the battery died and the aftermarket batteries all have hideous reviews.

@DarylSawatzky 2 года назад

Finally someone who can describe the purpose of the different wires. Seems like most HVAC guys guard this info with their life!

@danf1862 Месяц назад

Most people are incompetent. They're just playing the averages

@dougchaffin2608 2 года назад

One of the best videos I've watched on RU-vid. Great job. A friend was having issues so I jumped on here to research the issue. I sent it to him right after the first step... that's how confident I was. Thanks!

@jeffminnichgardendesigninc6677 3 года назад

I found a charger that would fit my Nest E and that did the trick! I would never have thought to charge the thermostat. Thank you for this very informative video.

@lucineidegode1880 6 месяцев назад

Thank you soooo much!!! I am a single mother, homeowner who has to try to figure out things in my home before calling a handman. And, with your video, I was able to fix my thermostate issue

@ch0jin 21 день назад

I'm sorry what did you say I got lost in your magnificent beard

@philaminanevels3901 2 года назад

That's rare that I have an issue, search for a video, and the first video I find NAILS the solution. Thanks man for putting this together. Saved my Saturday evening.

@judygonzales1404 2 года назад

Oh my goodness, thank you! I had a low battery and have searched to see what the problem was and thanks to your video, I was able to resolve it. I'm guessing like you said, it sat on a shelf for a while because it's a brand new thermostat. Thank you!!!!!!

@beatrizsalcedo6826 3 года назад

3am in the morning and I am listening and charging the battery right now. My hubby will be surprise when tomorrow our nest will e working great. ,,, I hope !! Thanks a million for your help

@h3cz_ Год назад

Did you end up having battery trouble again? I'm curious. I'm currently charging mine for the first time. Battery died after 2 years of use.

@ea3928 2 года назад

I don't generally comment on these videos. However I had a low battery issue and I only needed to do your first step. I didn't even know you could take the face off the thermostat ! Thanks heaps.

@fallguy4209 Год назад

Thank you for making this video. You saved me money and time. I did the switch out with the green wire and moved it to the c spot on the nest and furnace. No error code now.

@antred4597 3 года назад

That plug adapter thing worked great and I just used a power supply from the DirecTV crap equipment laying around since I went to all Roku. You are awesome.

@vince9737 3 года назад

Fixed, thank you! Just needed as quick zap from a USB connection. Levels are all good. We're up and running!

@donghylin8919 2 года назад

Most easiest video I've found to follow for the Nest thermostats. Much clearer than trying to get results from the Nest help line, I did the settings check and found these readings...6.5 and 40I , indicating as you said the battery(s) were low. I did find a USB charger that had the correct end on it and the batteries are charging as I type. let them run for an hour or two and see if that fixes the immediate problem. Thanks for the great video...a grateful friend.... Don

@dylan4dollars514 3 года назад

Dude. You totally helped me tonight and my family is warm on a chilly night thanks to you! 🙏

@OneHourSmartHome 2 года назад

Glad to help! Great you were able to stay warm!

@MrJohnJuarez 4 года назад

Helped me figure out why my nest was acting up after a long power outage. Thanks!

@NickGodwin Год назад

Thanks from London UK. You got me out of a hole. I recharged it thru my computer. Missing the old days when I just had a clockwork timer that plugged into the wall. Cheers

@user-zn3nk9sk2l 4 месяца назад

Your video nailed my Nest thermostat failure. I charged the thermostat through its android port with an old android phone charger for 2 hours: instant success. Thermostat came to life, connected with WiFi and everything works great. Thx

@cindysalinas9752 11 месяцев назад

We ended up exchanging this model for the slimmer version ru-vid.comUgkx0jZ_lGlDVJhDnmagEU8gn47cmfPNlLQU because it was too wide for the only door trim area that made sense to mount it on. However, we should have just noted the dimensions prior to purchasing. Otherwise, we love the doorbell. It works perfectly, and the video is very clear, even at night.

@BC-ml4ze Год назад

Many thanks! Been going a little crazy for a couple of weeks, but your video helped me fix the little bugger, using the fan wire as a makeshift “c” wire. When you led me to the battery and lin levels, it proved to be the culprit. Finally running well, and the nest 3rd gen didn’t end up in the pond😉

@bigt944 6 месяцев назад

i had the fan wired as a makeshift c wire too - but i'm still having low power issues. what was the culprit, and how;d you fix it?

@doribonesbonner8848 2 года назад

I was having problems through the app while away. The temps have been from low 20’s to single digits (and even a few minus degree days) so I decided to stay with my bf and save my fuel. I check my Nest app regularly when I’m not home to make sure everything is ok @ home. Several times I’ve had one (of 2) thermostats show “offline” in the app. Researched the issue & determined that it was likely a low battery. Thanks for the well done video explanation on how to charge the existing battery. I almost bought a new one on Amazon! Good thing I read reviews & one person said better off recharging rather than replacing. I would have taken my unit apart trying to figure this out. THANK YOU 🙏🏻

@babeyruth1 3 года назад

Wow, we're going through an insane snow storm in san antonio and our nest was dead! Had no idea if the usb charge! Thank you for doing this!!! You're a blessing!

@jamesd2209 3 года назад

We went through it too up near Dallas

@nateg652 3 года назад

Thanks for the info it really helped, I was able to charge the battery. It also sent me in the direction to solve another problem, someone had accidentally turned off the furnace switch. Big thanks, very much appreciated.

@toddkurzhal9407 2 года назад

Great detail. Our AC unit was being replaced. Amazing how fast the power drains on the nest. Low battery would not recharge on its own on the wall after power was off for half the day. I pulled it off the wall and charged it with USB for and hour and put it back and it connected to everything and worked fine afterword.

@vincezhang8572 Год назад

Then did you pull it off again? I have a similar situation recently. We got a new AC and my Nest went out of the battery every 2-3 weeks after I charged it by usb cable for a whole night. So annoy.

@jmd1327 2 года назад

You’re c terminal description was instrumentalist the success of my Nest thermostat’s successful activation. Thanks!

@nicholasjnorman Год назад

Best video I have seen on this issue to date! I am going to head home from work and diagnose my low battery issues. Thanks for the help!!

@klac8500 9 месяцев назад

Thank you so much for this video! I had no idea that my Nest needed charging! Living in Florida, I cringed at the thought of no A/C. I am now going to charge mine for the first time! Thank you again for sharing your knowledge!

@colinfrewen8294 4 года назад

Absolutely worked for me. I have a nest connected to a SIME format hydronic system. It pushed out 6v to controller but uses steps down to 24v to it’s internal clock. Used your advice and drew another wire from board. Works perfectly.

@OneHourSmartHome 4 года назад

Thanks for sharing

@reynoldsj 4 года назад

Amazing and precise video! Thank you so much. God bless!

@OneHourSmartHome 4 года назад

Thanks for watching!

@Harambe74 3 года назад

Great explanation and options. You sir made my life easier today. Many thanks.

@OneHourSmartHome 3 года назад

Welcome, thanks for watching.

@tamser Год назад

This video helped me diagnose and fix my NEST issue! So thankful. I am not handy, but with an Amazon power adapter and your vidos, I wired it myself and got it going!

@joefagersten9677 Год назад

Great video and very informative. Here's my pro tip: First thing to do is check to see if one of your kids turned the switch on the furnace to the "off" position... 😅

@davidkerner5797 2 года назад

Thank you so much! Power outage while I was out of town. Came back, and got low battery problem, I recharged it with phone cable, just like you said, and it worked.!!! You are the best!!

@rkulp Месяц назад

Does it permanently fix the issue? Or does the power go down over time?

@adamre09 Месяц назад

Having the same issue… power outage triggered both Nest thermostats to start having battery issue. I can charge via phone cable and that will work for a few hours, then the battery dies again. These worked together fine for 5 years and all the sudden BOTH stop working at the exact same time. Idk what the issue is. Voltage and Lin seem fine.

@davidrichards5909 2 года назад

Excellent video, as are your other ones! Thank you. For me when installing transformer, it only worked when I combined one of the wires from the transformer in/into the terminal with the existing Rh wire, and of course the other transformer wire into the C terminal. It did not work when I had one transformer wire in the Rc terminal and the other transformer wire in the C terminal.

@ScottishTexan Год назад

Thanks! My thermostat just went out in 100° Texas heat and this video saved my day 🎉

@ensmoken1 3 года назад

Awesome fix and thank you for helping me avoid buying another device!

@tacokitty100 3 года назад

Thank you for your help!!! Great thorough video.

@HUTTHOME1 2 года назад

Thank you so much for all your advice, you really help me in a lot of your videos you're very smart and helpful. I love your videos continue on my friend.

@twostep1933 2 года назад

Great video. We've had a few lengthy power outages in our area as of late and I never would have thought it would affect the thermostat and a need to charge it back up. I had the C-wire issue years back, which I also had to add as a power fix. Thank you for making great, helpful content!

@kirina91 2 года назад

Thank you, your video just saved me! I also have Ring here and the charger is compatible in case anyone else needs to know that.

@Obxcape 2 года назад

Excellent video! Much appreciated! I have 3 systems in my home, all individually controlled by Nest thermostats. ONE of the thermostats controls an hvac unit to a room with its own hvac unit. The room is rarely used, so I’ve had the system in that room set to OFF. Is this ‘OFF SETTING’ possibly leading to the 2 ‘AAA’ batteries draining, because the thermostat isn’t getting power from the hvac unit?

@qrozfieldsphoto 3 года назад

Thank you Brother fixed my issue

@hansbrolo8705 3 года назад

Really helped me out. Thank you.

@tobeamazingtoo8881 2 года назад

Thanks. Very thorough and informative video.

@logandakshi2087 Год назад

Thank you very much for your help. I plugged the Nest 3 thermostat to phone charger and it started working and connected to Internet. Thanks again 👍😃

@brianmclendon1647 3 года назад

Thank you!!!!!!! Fixed my issue, you rule!!!

@darrylnicholson1264 Месяц назад

Really helpful video... I couldn't get COOL to work until he explained O/B wire in detail... THANKS!

@ali2k4 3 года назад

this was really helpful thank you!

@rpatrickbill5932 3 года назад

I learned so much! This is Great. Do you show us how to replace the battery?

@FlyLan Год назад

This video single handedly helped me fix my mother's Nest Learning 2nd gen thermostat when nothing in Google's Nest Troubleshooting site, Nest ProTech Diag pdf, Nest Community forums, or any other Google Search return could. The Event: Heating for past few winter months (NO A/C usage since October 2022). Beautiful day in East Texas, mom turns Nest "Off". Next day, 80°F+ and 95% humidity, mom turns on A/C, and leaves to run a few errands. On arrival home she realizes that it's 78°F in the house. Air Handler blowing air, air not cooled. She calls me, the dutiful son. Nest Learning 2nd Gen display in error mode with message E30 - "No Power Detected for Y1 wire". Y1 is the Air Condenser unit outside of home. In Tech Info menu, it also says that "WiFi Disconnected". Can't get out of error mode other than to view "Wiring Diagram" and the various "Tech Info" submenus. I remove display unit to check wiring, all are fully seated. Wires are Y1 (A/C Condenser), G (Ground), Rc (Cooling Power), W1 (Furnace/Air Handler), Rh (Heating Power). I go outside and manually inspect A/C and it's independent breaker, not on breaker good, flip breaker, still nothing. Go inside reinstall display unit, same message error mode, can't get out of error mode. Left. Today the A/C came on by itself and started blowing cold air. No more error mode. Settings display "No Wifi Connected" and several functions auto disabled. Removed display unit and then it showed "low battery". I think the turning the nest "Off" for a full day drained the battery enough that it just couldn't function and was drawing it's power from the Y1 A/C or W1 Heater, but since we were trying to run the A/C and not the heater it couldn't charge itself to switch the A/C on and since we have no C wire it can't charge itself when neither HVAC systems are running maybe?

@jodib111 2 года назад

This was very helpful. Fixed my issue.

@f.c.9132 7 месяцев назад

Learned tons from your video man! Thank you! Realized I only have a RH and W1 wires connected, no C. Keep losing power and the lin is at 20 which tells me I will likely need a (C) wire if it keeps happening since I have no G. Had no clue what any of this was! So thanks!

@carriewevill4303 3 года назад

So Helpful!!!!! Charging my nest now and hope that works but our power was out for a few days and your video makes perfect sense!!!! I may be able to return the battery I purchased for it! YAY!!!

@OneHourSmartHome 3 года назад

Glad it helped, and that you got your problem fixed! Thanks for watching and subscribing.

@myrkajavvs 2 года назад

Very professional good job thank you so much

@GregSr 3 года назад

Your advice to connect the Nest to a charger while it's off the base was excellent! It's charging right now. I'm troubleshooting why the Nest is dead. I did verify the 24 volts is NOT present at the base. But if I can verify the system works otherwise, then I'll resolve the issue with the 24 volts. How can I determine which generation my Nest is? I think it's Gen II. I want to change the battery simply because the thermostat is more than 5 years old. But, before I buy a new battery, I want to be sure I get the correct one.

@logandakshi2087 Год назад

Thank you very much for sharing this knowledge. The advise to connect to USB and reconnect worked.

@xugg 3 года назад

Could you explain how to hard wire a 24v wallplug-power adapter into a Nest 1st generation? There are only 6 ports for cables, do I run one wire to C and another into the OB* slot? Thanks!

@cdc3150 2 года назад

Just worked for me thanks for the help!

@nowadd0 3 года назад

I didn’t have to change the wiring because the common wire was there and just folded back but I appreciated the information you gave us to solve the problems!👍

@DanielKastner 3 года назад

Hey, appreciate the info!! Thanks!

@jyoseph 3 года назад

Thumbs up dude, charging my nest now and going to look at the furnace...

@lfgnation8434 3 года назад

Thank you brother!

@staceyrollins1 3 года назад

Thank you! If you have a jumper red wire to both to rh and rc… do you have to have the jumper to both for the nest or can you just do one?

@wimschoenmakers5463 2 года назад

Thanks for the usefull video! Got 3.9 Volt power and over 200 MilliAmpere current, so should be fine.

@kengifford7612 3 года назад

Very well done!

@LyNguyen-fm2ii Год назад

Thanks so much for your video, it does help us a lot for fixing the problem. Would like to ask even we fixed the problem having the power back on after charging the thermostat, do we need to replace the new battery as well?

@thehummerdoc9277 Год назад

Thanks for reminding me about the mini USB for charging. My unit was off and I couldn’t reconnect to WiFi or lock the unit with low charge. Thanks again.

@UmutDenizKoyun 2 года назад

Thanks for the video. I had only two wires from my previous thermostat. I used them on W1 and RH. Lin shows only 8 mA (o) It also shows the same when I charge it externally with an 10W adapter. After charging externally, it keeps working normally 1-2 days max. Do you think I should connect another wire from C to the heater ? Will it help to get more power ? Thanks!

@NathanHarrison7 2 года назад

Those are some great hacks bud. Thanks man.

@Vulpixyy 3 года назад

I want to check, if I have an RC and an RH connected and wired in already. Can I put the 24 volt converter into the rh and c (double up like you mentioned in the RH) and it will function just fine?

@pgdmed 2 года назад

Thank you for your videos. I’ve been learning a lot from you. I have a question. I bought the Nest Thermostat 2020 version (mirror look if those helps) I can’t for the life of me find how to lock the thermostat. Does it even have this feature? Also, it states it has a update ready but when I try to updated, it states “failed to update”. Do you have any videos addressing these issues? Thanks for your help.

@theedgeofoblivious 3 года назад

Thank you!

@Rocco-nu1ui Год назад

Thank you for the video. Got an e74 message. I knew the drain pan was full. The evaporative unit line was clogged up, so the secondary drainage was filling up the drain pan. Thank god for the sensor. Water would have been all over the condo.

@jonyamasaki6725 2 года назад

Our battery was low, however after charging we had an “e74” error...found out drain pan was clogged, shutting the red power wire off. This saved us water damage, however it took a while to figure that out. Nest being low on charge was only partly blame. Safety feature shut-off that was not well documented. Hopefully this helps some folks

@TheEmillz1 2 года назад

this comment was the most helpful. thank you!

@victorramirez1987 2 года назад

Same

@geminigirl1135 2 года назад

What is a drain pan ?

@Seasniffer69 2 года назад

@@geminigirl1135 some houses don't have a drain for the a coil condenser where the blower motor pushes air through to cool, it creates condensation which typically runs out of the unit down some PVC off the furnace into a drip line to a floor drain. Some people don't have floor drains and have to dump the accumulated water from running ac

@robertr3880 Год назад

Thanks! The drain line was clogged which caused the water to trigger the safety switch cutting power, cleared it and fixed it! Thanks Jon Y!

@judirothberg7411 3 года назад

Great video very informative

@courtneysmith6453 3 года назад

I want to test my thermostat like you suggested, but I don’t have an Rh wire. What two wires should I connect to test it?

@saillyndsey3712 Год назад

helpful and clear. good video!

@MB-kz8de 2 года назад

I need to determine if my HVAC system is the issue. I would like to try the solution you suggested in minute 11 of the video. If I have a common wire connected will this affect which two wires I connect or do I still connect w1 and Rh?

@lomex_1417 2 года назад

highly recommend this purchase!

@jamieco0o 3 года назад

Great vid i checked mine issues with wifi power 3.758v /vusb 4.97v /Lin 200(c) But my Vin is 0.00 V ?? new battery needed ?

@swcwrx 8 месяцев назад

saved the day, it's November in New England and our Nest was completely drained

@6198494 2 года назад

Thanks great help 😊

@MsDhowse 3 года назад

Thank you for posting this info!!!! My power went out.. everything came back on but the AC the nest continued to say offline.. I remove the nest thermostat, plugged in to USB cord..the light blinked 3 times then it said to put it back on and I got the AC working. It's still under warranty will have them come check, but this helped significantly!!!!!! Thank you.. New follower!!!

@stephenboadi1215 3 года назад

Best video ever- you made my night

@OneHourSmartHome 3 года назад

Glad it helped!

@wallacesilva9931 4 года назад

Good Morning! need help! yesterday i was installing a nest thermostat and the device didn’t turn on. there are three wires that come out of the wall in red, black and white. can someone help me These thermostat need refill? thank you!

@Rainbow-jx1ov 3 года назад

You are a saint. Thank you!

@7motion985 2 года назад

Thank you 🙏

@rforman92 2 года назад

THANK YOU!!!

@lonniebarrios5101 3 года назад

I have a 2nd Gen Nest thermostat. In the past I've had intermittent battery issues. We just came out of a 3 day power outage in Texas. When the power finally came on, the thermostat was acting really weird. Most notably, when it called for heat, it would just turn on the fan and never light the burners in the furnace. I re-installed the old thermostat and the system works fine. Problem is with the Nest. Charged it for 24 hours and re-installed it. Now it won't even turn on the blower. Just constantly says "Delayed <a href="#" class="seekto" data-time="180">3:00</a>". With no C wire, is my battery just shot and can't keep up with the demand even though it says it's at 3.8v?

@gordonagunobidjswiss3093 2 года назад

Great stuff!

@raymondliang123 3 года назад

Wonder if I only have the 2 wires system, how often do I need to charge the nest e?

@evanr9992 2 года назад

I only have the white and red wire for a boiler/baseboard system. I was told to get the google power adapter “c” wire and hook it to my zone valve or controller. Is that the simplest way or do you have any other ideas ?

@jesseyounker Год назад

Your videos are awesome! I was ready to throw my next in the garbage and get a different brand! Is there any problem with using a jumper from the g-c wires? I use just the fan often?

@ralphrosario1 3 года назад

Thank you very much

@OneHourSmartHome 3 года назад

You are welcome!

@duramax78 3 года назад

Can I put my multimeter on rh wire and c wire and it should read .24v?

@theinvid 7 месяцев назад

very helpful video!!

@olographics 4 года назад

I have exactly the same wires as your system but my red wire is connected to Rc not Rh like in your system, should I change it? What's the difference? I just plug my nest to usb because it was installed and after more than 2 hours still shows low battery, do you think it is because of the red wire connection? Thank you for your advice.

@TheNomadMan1968 3 года назад

Thanks for this video. I'm heating only and am diagnosing an e74 code. Nest shows 3.8 battery voltage and lin mA of 20. I connected rh to w1 and the furnace/fan shuts off after about 6 min pretty consistently then turns back on. Time to look at furnace? Note: It's only about 5 years old.

@OneHourSmartHome 3 года назад

If it's running and shutting off it typically means that a limit sensor is tripping on the HVAC system. The limit sensors can be tripped because there isn't enough airflow, it's getting too hot or the burners are not preforming as they should. A very simple thing to check is your air filter. If your air filter is clogged it can cause the system to cycle like yours is. There's plenty of other things that it could be but checking the air filter and replacing it is an easy inexpensive place to start that could help you avoid a service call. I'm going to be doing several videos on diagnosing HVAC issues over the next few months so stay tuned for that. In some cases people misdiagnose an HVAC system issue as a smart thermostat issue so I want to help people understand what the difference is and how to so some basic troubleshooting.

@johnmcgill3690 2 года назад

I have 2 wire boiler system with heat zone manifolds. Think the manifolds take power from nest learning. How to get power without effecting all zones?