Nest Low Battery Fix!
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- เผยแพร่เมื่อ 27 ก.ค. 2024
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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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The fact that this is such a widespread issue should tell you all you need to know about these products
I'm never recommending Nest again. Garbage products
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.
Finally someone who can describe the purpose of the different wires. Seems like most HVAC guys guard this info with their life!
Most people are incompetent. They're just playing the averages
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.
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.
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
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.
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
I'm sorry what did you say I got lost in your magnificent beard
We ended up exchanging this model for the slimmer version th-cam.com/users/postUgkx0jZ_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.
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.
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
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
One of the best videos I've watched on TH-cam. 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!
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!!!!!!
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... 😅
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.
Dude. You totally helped me tonight and my family is warm on a chilly night thanks to you! 🙏
Glad to help! Great you were able to stay warm!
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!
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 🙏🏻
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!
We went through it too up near Dallas
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
Thanks! My thermostat just went out in 100° Texas heat and this video saved my day 🎉
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.
Helped me figure out why my nest was acting up after a long power outage. Thanks!
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?
Fixed, thank you! Just needed as quick zap from a USB connection. Levels are all good. We're up and running!
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😉
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?
You’re c terminal description was instrumentalist the success of my Nest thermostat’s successful activation. Thanks!
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!!
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!!
Does it permanently fix the issue? Or does the power go down over time?
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.
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.
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.
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.
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!
Awesome fix and thank you for helping me avoid buying another device!
saved the day, it's November in New England and our Nest was completely drained
Amazing and precise video! Thank you so much. God bless!
Thanks for watching!
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.
Thanks for sharing
Really helpful video... I couldn't get COOL to work until he explained O/B wire in detail... THANKS!
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.
Great explanation and options. You sir made my life easier today. Many thanks.
Welcome, thanks for watching.
Thank you for your help!!! Great thorough video.
Thank you Brother fixed my issue
Hey, appreciate the info!! Thanks!
Thumbs up dude, charging my nest now and going to look at the furnace...
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.
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!!!
Glad it helped, and that you got your problem fixed! Thanks for watching and subscribing.
Thank you!!!!!!! Fixed my issue, you rule!!!
Really helped me out. Thank you.
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.
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 👍😃
this was really helpful thank you!
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!
This was very helpful. Fixed my issue.
Thanks. Very thorough and informative video.
I learned so much! This is Great. Do you show us how to replace the battery?
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.
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
this comment was the most helpful. thank you!
Same
What is a drain pan ?
@@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
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!
Thank you brother!
Very professional good job thank you so much
Just worked for me thanks for the help!
Thank you!
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!👍
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.
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.
Very well done!
Those are some great hacks bud. Thanks man.
Google is negligent in not providing easily fixed battery and charging guidance like this
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!
Thanks for the usefull video! Got 3.9 Volt power and over 200 MilliAmpere current, so should be fine.
helpful and clear. good video!
Wow man I feel like I need to pay you for this video ! 😂
Thank you very much for sharing this knowledge. The advise to connect to USB and reconnect worked.
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!!!
You are a saint. Thank you!
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?
Great video very informative
Thanks great help 😊
Best video ever- you made my night
Glad it helped!
Thank you very much
You are welcome!
highly recommend this purchase!
This may have been mentioned, but that's not an "L", it's a capital I, the variable for current as in Q=I*R
Thank you 🙏
THANK YOU!!!
I have three Nest thermostats in my house and have had to purchase six to replace three that stopped working after a few months just to have three that work. After two years, I’ve reached the conclusion that the Nest thermostat sucks.
Amazing video, after a week away from home the house did get cold, and the nest did say low battery.
I had no idea i could pull the neat thermostat off the wall,
And also it was usb micro charging,
I now have mine charging.
Thanks a lot mate
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!
Great stuff!
THANK YOU! THANK YOU! THANK YOU!
Thanks for watching and subscribing!
I would recommend, absolute first step, just do a simple reset. That worked for me for low battery notification. Then do what this guy says… 👍
Thank you my issue fix.
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?
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?
Problem solved.! Thank you.!
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!
very helpful video!!
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.
Great video!
Great 👍🏼
Amazing video just subbed!
Could I use a jumper from the R wire to the C wire input?
Great video, actually I troubleshot a NEST 800 miles away just now. Two comments about safety.
First, use a volt meter to measure the voltage on all the wires, make sure the control transformer hasn't failed internally and is sending 120VAC. Second, turn off the furnace while you mess with wiring. Injury is unlikely but possible even at 4 volts, plus you can cause the HVAC controller to become confused and lock up, in which case you will need to turn it off anyway. Get used to doing everything with maximum safety. Practice safe practices on safe stuff and the unsafe stuff is less likely to catch you on a "dumb day".
Thank you so much. Knowledge is power. I work as Respiratory Care Practitioner. Let me know if I can return the favor.