THANKS for fixing my problem. Brand new Nest E did not work. I was able to hook up a blue common wire. It still didn't work, but was not connected at the furnace. Five minutes later, I'm in business. YES!
Thank you! And pardon my ignorance, how do you turn off power? You mean electric in the panel or is it maybe this on/off valve on the AC itself? Thank you!!!
OMG THANK YOU!! IT IS GOING TO BE -10 IN MN FOR THE NEXT WEEK AND THIS ERROR JUST SHOWED UP. I CONNECTED THE BKUE COMMON WIRE TO THE THERM AND FURNACE THAT WASNT CONNECTED ORIGINALLY AND IT WORKS!!!! CAN NOT THANK YOU ENOUGH! PHEW!
SOLVED! Went into HVAC unit in attic to check wires and noticed the purple E fuse (actually just a 3 amp buss automotive fuse) was blown. This was caused by me turning off the AC breaker only when installing the Nest, but not turning off the Furnace breaker also. Duh. Turned off breakers again, replaced fuse, restored power, and all is good. Thanks to other commenters for leading me to the fuse issue
I have been using the best for 21 months prior to this issue. I just replaced the little purple plug that was popped. Nothing has changed. I'm still poking around, though.
You just saved my night and money. Did the same with breakers when installing nest and low and behold. 3amp fuse blown. Got a late night replacement and my AC is up and running. Thanks 🙏!
You saved my bacon. I didn’t even know the furnace had an internal 3a fuse. Checked after your comment and that was it. My wife thanks you for saving us another cold night!
Had the same problem. Common wire for sure. I just installed a Nest E today and my old thermostat used AA batteries and no common wire. Fortunately it was available so I attached it to the Nest, but it didn't work until I hooked it up on the furnace too. Thanks for the suggestions! Make sure you power off your system before messing with the wires 🙂
FYI, I had been using the Nest E for over 1.5 years and had the E195 Error recently. Similar to your old thermostat, mine old one used AA batteries and doesn't have a common wire. Since I don't have the extra common/brown wire, I just went back to my old thermostat and had to reset my AC compressor outside. Everything work fine now. **I am not sure if there was any Nest E updates that caused the thermostat requiring more power. I guess there is some truth to the old saying, "if it's not broken, don't fix it".
@@petervonpanda wow you’re hot on reply’s too haha awesome. Gonna try fixing this now- having the same problem - ran great for 2 months then boom not enough power 🤦♀️ lol I appreciate you! ✌️
Good one, that’s exactly the issue faced by me too, but Nest short cycles the AC so many times that the compressor breaks down. They will never ever acknowledge this or accept. BTW one of the worst and worthless customer service you get. Nest customers are on their own. Many homes have just 4 wires in a typical AC/ Gas Furnace type setups. While C wire is the best way to go, the hassle of running C wires ( 2 of them in my case, as it is Dual Zone set up) is a huge hassle and mess. Asking a pro to do it is not worth it for the purpose why I chose Nest in first place. So the alternative is to setup to Run the fan for 15 mins every hour. This way Nest will get charged even on days when neither the AC or Heat is likely to get turned on ( usually April / May months and Late Sep / Oct in northern USA) Nest scavenges power from the cooling or hearing cycle. Any time there is an issue below 3.6 V, Nest will act up.
Compressor breakdown is not the nest issue. Get a professional to come to diagnose your issue, and stop being cheap. There are so many reasons why your system can short cycle.
Hmmm, great video however on the exact same Nest thermostat, the blue C wire already there hooked up to the C terminal and I'm getting this E195 error. All of the wiring is correct but am at a loss as to why it's not getting enough power now. Had been working perfectly fine for almost 2 years now.
@@kamicatutson6095 turned out the condensation hose was clogged and safety switch was turning off the AC unit so the drain pan wouldn't overflow. Unclogged the hose and the AC came on along with the error code being cleared. Working great since then.
In our case it was a bad (intermittent) 24V transformer in the HVAC cabinet. Use a DVM to see if you are getting 24VAC to the blue and red wire that connect to the Nest to see if this might be your problem.
I had this happen to me yesterday, Turned out the float switch was full, meaning it turns off power to the thermo stat to keep from over flowing, result was the drain line was clogged, cleaned it out and has been going without problems since, I knew it wasn’t the breaker and fuse in the furnace because it would turn on it’s own after a certain amount of time passed.
You sir are muuuuuch appreciated, had the same exact issue , I believe it will be fixed now just did this about 5 minutes ago and everything is back on so glad I didn't run another wire I believe that's the absolute wrong thing to do, unless the issue in the vodeo still happens after the drain is checked cleaned and the float is working properly, if one runs another wire to force the system to run when the drain is full could be bad bad
Thank you for this video! My NEST has been working JUST fine for years. All of a sudden, same exact issue. So frustrating...thanks for the trip charge NEST! Big NEST fan until today!
I think Nest must know of something we don't. Earlier today we had this issue with our 2nd Gen thermostat except the error is E30, no power to Y1 and now about 4 hours later at another property we are having the same issue with our Nest E with the E195 error No Power to R. This is not a coincidence. With our 2nd Gen we swopped the wires Y1 with G and the system was back to normal. After everything seemed to be fine support advised me to switch it back to the correct configuration Yellow to Y1 and Green to G. Its been running no issues so far. We did have a storm about 2 weeks before all this started happening that gave us to very short outages. So maybe that has something to do with it.
Thanks for the video. My Nest worked for three months. I had fully charged it via a USB cable before installation. I had a four wire system and installed Nest per instructions. A couple days ago furnace started cycling every 90 seconds. I found the e195 error and my Nest battery was less than 3 6V. Installing a "C" wire on the Nest and in my furnace worked like a charm and my Nest voltage is a constant 3.9V now. I found a fifth wire tucked back in my wall after I found the fifth wire not being used inside my furnace. One note. I saw another installation video from a professional HVAC installer who always repurposes the fan (green) wire and connects that in both the furnace and on the Nest as a "C" wire. He said most newer systems do not have the ability to run a fan separately. I don't know if that is true or not since I do run the fan separately with mine sometimes.
Its a Nest problem. They will lie to you and say they will pay to have it checked but the restrictions are so tight you will never get the $. Also you will likely have a ripoff repair guy come and charge you $100's to "fix" it. Maybe Im being a bit aggressive but just as in car repairs if you are told something needs to be replaced ALWAYS require them to provide you with the "Broken" part before paying. In fact always let them know you will want it ahead of time. "Oh, really? Can you make sure you give me the broken one because I think we had it replaced before. I think it may still be under warranty."
Same thing happened tonight. Nest installed 4 month ago. Connected spare wire to "C" and the other end to common on 24 volt side. Nest working again. Thanks for help.
Same thing happened to me after 2 years of working! This video doesn’t help me as I already have a common wire hooked up.. Does anyone have any answers?
In my case with the AC unit it didn't have anything to do with wires. The AC didn't run for a couple days because the weather was cool so the condensation water backed up to the Save-T-Switch. All I had to do is vacuum the water from the condensation pipe outside the house and the AC kicked in and started running right away. Nest started getting power to the red wire and everything is back to normal now. Lesson learned: remember to vacuum the condensation pipe every couple of months.
Same here. The condensate unit was clogged with algae, so the system wasn't draining, which tripped the float switch, which cut off the power to the thermostat (hence the error).
I am running into the same problem on my Nest Gen 1. Was working fine for 7 years then the thermostat could not detect power on the Rc wire. My furnace is fine because I can also jump the furnace to start. My guess is that it might be a FW upgrade that is requiring more power and the CPU is running more often. But the strange thing is that my Nest Gen 2 does not have this problem. So essentially Google is requiring their Nest customers hundreds of dollars of HVAC service fees in order to use their product?
Just had the same thing happen yesterday morning! And it had been about 6 months for us as well. I wonder what happens at that point to cause it to crap out?
For me the cause was error code 13 on my furnace. Flame rollout switch had tripped. There are several things that can cause this. One thing is to check any obstructions in vent pipe. I had placed a fine mesh screen outside at the exhaust due to wasps building a nest there. I removed the screen and also pulled apart the S-shaped exhaust. Found another old piece of wasps nest there. Dumped that out and put everything back together. It is winter now and maybe ice was forming on that screen. I reset the switch at the furnace and now the Nest is working. If the switch trips again I know I have a problem.
Thank you sooooooo much! Same error and followed directions provided by the device and Nest online help to check the red wire, nothing. After viewing your video, I checked the brown wire (c) and sure enough it was loose. I reconnected that wire and instantly started working again.
I wish I could show a picture of my error and wiring, I have the Nest thermostat gen E installed one for my upstairs and downstairs units and they both have been working fine until now and receiving this exact same issue and error code. My condensers look to be turning on normally outside at least the fans are spinning on both so it seems there’s power there. Here’s how wired the next. Blue to common (C) Red to (Rh) White to (W1) Green to (G) Yellow to (Y1) and like I said no issues until now downstairs only and my thermostat just turned off now completely. I tried resetting my breaker but not sure what I should do any thoughts to correct my error message that says, “the power from your equipment to the thermostat may be turned off?” Then it shows Warning code E74 no power to RH wire detected? Please help I need to get up and running again. It’s not cooling downstairs for sure.
This is the first video that popped up when I searched "no power to rh wire detected" I had the nest plugged in for over a year with no issues. I tried moving the red wire from the Rh to the Rc and it turned right on. This was on a Nest 3rd Gen
I’m having the same problem with the nest E I get all cables connected well. But don’t know where the brown cable come from? Or how can I do to run the brown cable?
I FIXED IT DIFFERENTLY: All I did was delete it from the home app, factory reset the thermostat and go thru the setup again. (I tightened some wires additionally but they weren't loose). Hope this helps somebody.
I'm getting this error, but I've had my Nest tstat for almost three years with no isses. Also, I only have two wires, which are already connected. Any advice?
the brown wire was from the previous thermostats ? or you added it ? I have the same problem and found out that I also have the brown wire , should i just plug into "C" ?
Nest is junk. Got the an error on the coldest night of the year. Had to troubleshoot at 2am by removing the ac wire. Yellow. What a joke. Definitely a nest issue. Back to old reliable Honeywell.
Actually this is an issue in which the ac has a low pressure safety switch. Any powerstealing thermostat would have haf the same issue. When the outsidr temperature reaches a certain low temp, the ac unit will shut off power to itself in order to prevent it from running by accident, which will cause system damage. When this happens, the nest cannot charge itself because there is no power flowing through the yellow y1 wire. The easy fix is to either remove y1 and temporarely lose access to your ac unit, or to have a common wire, common maker, isolation relay, etc, installed. This is an extremely common feature in many ac units. Again, any smart, powerstealing thermostat will have the same issue.
Gamma1227 I've never heard of this AC unit feature before, but my Nest was throwing an error about the Y1/AC wire so I unplugged it and we're all good now. Thanks for the info and solution!
Before you do any of that check switch first if you have one next to your furnace. Ours was off, we turned on and Thermostat worked as normal. Easy fix to same error message. Second potential easy fix if above did not apply to you. Verify circuit breaker. I would turn off switch and then back on. It doesn't hurt anyways other than resetting clocks if any just like when one loses power.
I'm beginning to think that with the Google / Nest partnership it's using more power and having no C-Wire is the issue! Mine is doing this also so I've ordered a Venstar C Wire power kit!
@@albertalmaguer7362 Me or the guy in the video...LOL...I think your asking why the guy in the video is yelling right...I didn't type my reply above in CAPS so the yelling isn't me. Whilst I'm here I might as say that it's been 2 years that I added the Venstar C Wire Power Kit and it's still operating flawlessly!
My red wire has a float switch attached for the overflow. And the float was just stuck in the up position. No need to rewire as i think a lot of people did. Switching to another unused wire like a brown would have bypassed my float.
Still having the same problem - once I got the C wire connected it stops recognizing the RH wire.... The HVAC guy says its the Nest and to try to get a new one. Any ideas?
Rude people in these comments telling my man to hurry up...damn, y'all don't know how to fast forward or what? Even better yet, keep a cheap ass back-up thermostat for emergencies.
Mine solution was different, same code. The blower fan continued running and got LED code 33 on the furnace, that combination = limit switch fail. Tested switch and stuck open, replaced switch and now working again.
ever since the update my wifi disconnected for weeks and recently no rh power. good thang the blue C wrie was tucked away behind the thermostat. it was never needed prior to software update. connected C wire to furnace C marking on circuit board and all is werking fine again with wifi and nest unit charging.
I was going to get a nest i heard to many issues with this product such as it will stay off if you have a power failure to messing up the heating and now ac no thanks not worth it.
The appt. complex installed these things a month ago... mine quit... appears to be not charging. Good idea, wait till they get these things right. BTW, took off a perfectly working old honeywell (the round one). It was prolly inservice for 10 years or so... just sayin
Sean, I have had mine for 3 months and it got the same error after being installed that long running with no common wire. I believe what happens is the Nest battery gets too low and then it does not work properly. Just a guess since right now, I have my old thermostat reconnected so I have heat.
Bullshit!!! Manufacturer should have been much clearer about the need for additional wiring. Not going to pay an electrician for this. Not easy for me to wire in my home. I just buy a new unit and return the old one every 3 months! I'm on my 7th "exchange"!
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Dannie Kemp have u contacted nest? They dont seem to realize that people are having these problems. Im having same problem. Might try the blue wire tomorrow but if it doesnt help im calling and asking for someone who knows something because so far they seem clueless.
I HAVE THE SOLUTION. just take off all the wires ( rc , y, etc ) then put them back. As easy like that, and the thermostat will work again. Should be a bad update.
I seriously didn’t mean to be rude it’s just that today is the coldest day of the year being -35 and my nest thermostat just decided to stop working so I was frantic to try to find a quick fix so I do apologize if I’m being rude
Thank you. You just saved me a pricey emergency service call. Didn’t think to check the fuse box….lo and behold, it had tripped!!
THANKS for fixing my problem. Brand new Nest E did not work. I was able to hook up a blue common wire. It still didn't work, but was not connected at the furnace. Five minutes later, I'm in business. YES!
Glad it worked! Mine has worked fine ever since!
I removed the common wire (blue wire in my case) and it now works. Be sure to turn off power before removing any wires!
THANK YOU SO MUCH!
Thank you! And pardon my ignorance, how do you turn off power? You mean electric in the panel or is it maybe this on/off valve on the AC itself? Thank you!!!
The breaker box. Flip the breaker for AC to off.@@barbaracosta306
@@barbaracosta306 turn of the circuit breakers for the thermostat and A/C. It was two separate ones for me
Hey Friend! Helpful video. This was my takeaway: "common wire is blue or brown". Trying now. 😄
OMG THANK YOU!! IT IS GOING TO BE -10 IN MN FOR THE NEXT WEEK AND THIS ERROR JUST SHOWED UP. I CONNECTED THE BKUE COMMON WIRE TO THE THERM AND FURNACE THAT WASNT CONNECTED ORIGINALLY AND IT WORKS!!!! CAN NOT THANK YOU ENOUGH! PHEW!
THANK YOU THANK YOU THANK YOU!!!! This video saved me SO much hassle. Your solution did the trick for me. Much appreciated!!
Sweet!
SOLVED! Went into HVAC unit in attic to check wires and noticed the purple E fuse (actually just a 3 amp buss automotive fuse) was blown. This was caused by me turning off the AC breaker only when installing the Nest, but not turning off the Furnace breaker also. Duh. Turned off breakers again, replaced fuse, restored power, and all is good. Thanks to other commenters for leading me to the fuse issue
Thank you! Worked like a charm...
I have been using the best for 21 months prior to this issue. I just replaced the little purple plug that was popped. Nothing has changed. I'm still poking around, though.
Is this something to call an hvac person for or an electrician?
You just saved my night and money. Did the same with breakers when installing nest and low and behold. 3amp fuse blown. Got a late night replacement and my AC is up and running. Thanks 🙏!
You saved my bacon. I didn’t even know the furnace had an internal 3a fuse. Checked after your comment and that was it. My wife thanks you for saving us another cold night!
Peterrrrrr u saved me money time and frustration thank you so much 🤑🤑🤑🤑❤️❤️❤️😊😊😊😊
Had the same problem. Common wire for sure. I just installed a Nest E today and my old thermostat used AA batteries and no common wire. Fortunately it was available so I attached it to the Nest, but it didn't work until I hooked it up on the furnace too. Thanks for the suggestions! Make sure you power off your system before messing with the wires 🙂
FYI, I had been using the Nest E for over 1.5 years and had the E195 Error recently. Similar to your old thermostat, mine old one used AA batteries and doesn't have a common wire. Since I don't have the extra common/brown wire, I just went back to my old thermostat and had to reset my AC compressor outside. Everything work fine now.
**I am not sure if there was any Nest E updates that caused the thermostat requiring more power. I guess there is some truth to the old saying, "if it's not broken, don't fix it".
Omg your video was so great! Love your energy. Thanks!
Thank you so much!!
@@petervonpanda wow you’re hot on reply’s too haha awesome. Gonna try fixing this now- having the same problem - ran great for 2 months then boom not enough power 🤦♀️ lol I appreciate you! ✌️
Good one, that’s exactly the issue faced by me too, but Nest short cycles the AC so many times that the compressor breaks down. They will never ever acknowledge this or accept. BTW one of the worst and worthless customer service you get. Nest customers are on their own. Many homes have just 4 wires in a typical AC/ Gas Furnace type setups. While C wire is the best way to go, the hassle of running C wires ( 2 of them in my case, as it is Dual Zone set up) is a huge hassle and mess. Asking a pro to do it is not worth it for the purpose why I chose Nest in first place. So the alternative is to setup to Run the fan for 15 mins every hour. This way Nest will get charged even on days when neither the AC or Heat is likely to get turned on ( usually April / May months and Late Sep / Oct in northern USA) Nest scavenges power from the cooling or hearing cycle. Any time there is an issue below 3.6 V, Nest will act up.
Compressor breakdown is not the nest issue. Get a professional to come to diagnose your issue, and stop being cheap. There are so many reasons why your system can short cycle.
I have the same message but the power is out due to rolling blackouts in texas for the cold. i have gas heater but can't get the thing turned on.
Common wire solved my problem as well. My nest wouldn’t work from the get go, said no red wire although it tested at 25v. Hooked up a c and off I went
Hmmm, great video however on the exact same Nest thermostat, the blue C wire already there hooked up to the C terminal and I'm getting this E195 error. All of the wiring is correct but am at a loss as to why it's not getting enough power now. Had been working perfectly fine for almost 2 years now.
Same thing for me. So frustrating 😫. How did you fix it?
@@kamicatutson6095 turned out the condensation hose was clogged and safety switch was turning off the AC unit so the drain pan wouldn't overflow. Unclogged the hose and the AC came on along with the error code being cleared. Working great since then.
In our case it was a bad (intermittent) 24V transformer in the HVAC cabinet. Use a DVM to see if you are getting 24VAC to the blue and red wire that connect to the Nest to see if this might be your problem.
I had this happen to me yesterday, Turned out the float switch was full, meaning it turns off power to the thermo stat to keep from over flowing, result was the drain line was clogged, cleaned it out and has been going without problems since, I knew it wasn’t the breaker and fuse in the furnace because it would turn on it’s own after a certain amount of time passed.
Reading your comment helped me identify a similar problem with mine. Thanks!
@@deepmetaphysics3620 Glad It helped! STay cool! Stay Safe!
You sir are muuuuuch appreciated, had the same exact issue , I believe it will be fixed now just did this about 5 minutes ago and everything is back on so glad I didn't run another wire I believe that's the absolute wrong thing to do, unless the issue in the vodeo still happens after the drain is checked cleaned and the float is working properly, if one runs another wire to force the system to run when the drain is full could be bad bad
@@sexdrugsrocknroll420 I am glad this helped :D Stay cool and have a great year.
@@Mayu_Listen_to_my_Song yezzir you too bud thanks agaim
Thank you for this video! My NEST has been working JUST fine for years. All of a sudden, same exact issue. So frustrating...thanks for the trip charge NEST! Big NEST fan until today!
I think Nest must know of something we don't. Earlier today we had this issue with our 2nd Gen thermostat except the error is E30, no power to Y1 and now about 4 hours later at another property we are having the same issue with our Nest E with the E195 error No Power to R. This is not a coincidence. With our 2nd Gen we swopped the wires Y1 with G and the system was back to normal. After everything seemed to be fine support advised me to switch it back to the correct configuration Yellow to Y1 and Green to G. Its been running no issues so far. We did have a storm about 2 weeks before all this started happening that gave us to very short outages. So maybe that has something to do with it.
I had the same message always had a c common wire couldn’t never get it fixed swap the thermostat to Ecobee so far so good no issues at all love it
This worked on my nest pro 3. My error was e73. Thanks
Converted my orange wire to a common wire and all's good. Thanks so much for this.
Hi Mark I have orange wire too.. How did u convert it? Is it as simple as unplugged the orange wire into the C wire slot?
hi mark.😆
Thank you very much I solved the problem thanks to your video 👍👍👍
That’s awesome, Carlos!
Thanks for the video. My Nest worked for three months. I had fully charged it via a USB cable before installation. I had a four wire system and installed Nest per instructions. A couple days ago furnace started cycling every 90 seconds. I found the e195 error and my Nest battery was less than 3 6V. Installing a "C" wire on the Nest and in my furnace worked like a charm and my Nest voltage is a constant 3.9V now.
I found a fifth wire tucked back in my wall after I found the fifth wire not being used inside my furnace. One note. I saw another installation video from a professional HVAC installer who always repurposes the fan (green) wire and connects that in both the furnace and on the Nest as a "C" wire. He said most newer systems do not have the ability to run a fan separately. I don't know if that is true or not since I do run the fan separately with mine sometimes.
Ah great info!!
Its a Nest problem. They will lie to you and say they will pay to have it checked but the restrictions are so tight you will never get the $. Also you will likely have a ripoff repair guy come and charge you $100's to "fix" it. Maybe Im being a bit aggressive but just as in car repairs if you are told something needs to be replaced ALWAYS require them to provide you with the "Broken" part before paying. In fact always let them know you will want it ahead of time. "Oh, really? Can you make sure you give me the broken one because I think we had it replaced before. I think it may still be under warranty."
Same thing happened tonight. Nest installed 4 month ago. Connected spare wire to "C" and the other end to common on 24 volt side. Nest working again. Thanks for help.
Same thing happened to me after 2 years of working!
This video doesn’t help me as I already have a common wire hooked up..
Does anyone have any answers?
Mine was a blown fuse. On the furnace but thanks for leading me in the right direction any how.
Manss Same problem here. Thanks for the tip!
Turn your furnace off next time you install a tstat
In my case with the AC unit it didn't have anything to do with wires. The AC didn't run for a couple days because the weather was cool so the condensation water backed up to the Save-T-Switch. All I had to do is vacuum the water from the condensation pipe outside the house and the AC kicked in and started running right away. Nest started getting power to the red wire and everything is back to normal now. Lesson learned: remember to vacuum the condensation pipe every couple of months.
Same here. The condensate unit was clogged with algae, so the system wasn't draining, which tripped the float switch, which cut off the power to the thermostat (hence the error).
Adding the common wire fixed mine also.
Just moved into my house other day and this happened. Getting rid of the nest and going to the good old Honeywell. F the nest 😂
I am running into the same problem on my Nest Gen 1. Was working fine for 7 years then the thermostat could not detect power on the Rc wire. My furnace is fine because I can also jump the furnace to start. My guess is that it might be a FW upgrade that is requiring more power and the CPU is running more often. But the strange thing is that my Nest Gen 2 does not have this problem.
So essentially Google is requiring their Nest customers hundreds of dollars of HVAC service fees in order to use their product?
Did you have to turn off the power to switch wires?
Just had the same thing happen yesterday morning! And it had been about 6 months for us as well. I wonder what happens at that point to cause it to crap out?
Same wonder here, I have a common but just started experiencing the same issue. Only with AC.
same here!
so you never said how you got the brown wire in? do you need to call someone to install it????
For me the cause was error code 13 on my furnace. Flame rollout switch had tripped. There are several things that can cause this. One thing is to check any obstructions in vent pipe. I had placed a fine mesh screen outside at the exhaust due to wasps building a nest there. I removed the screen and also pulled apart the S-shaped exhaust. Found another old piece of wasps nest there. Dumped that out and put everything back together. It is winter now and maybe ice was forming on that screen. I reset the switch at the furnace and now the Nest is working. If the switch trips again I know I have a problem.
Thank you sooooooo much! Same error and followed directions provided by the device and Nest online help to check the red wire, nothing. After viewing your video, I checked the brown wire (c) and sure enough it was loose. I reconnected that wire and instantly started working again.
Awesome!
I wish I could show a picture of my error and wiring, I have the Nest thermostat gen E installed one for my upstairs and downstairs units and they both have been working fine until now and receiving this exact same issue and error code. My condensers look to be turning on normally outside at least the fans are spinning on both so it seems there’s power there. Here’s how wired the next. Blue to common (C) Red to (Rh) White to (W1) Green to (G) Yellow to (Y1) and like I said no issues until now downstairs only and my thermostat just turned off now completely. I tried resetting my breaker but not sure what I should do any thoughts to correct my error message that says, “the power from your equipment to the thermostat may be turned off?” Then it shows Warning code E74 no power to RH wire detected?
Please help I need to get up and running again. It’s not cooling downstairs for sure.
Used Blue (unused wire, had to strip both sides). Connected one side to C on nest, the other to circuit board in furnace. Works!!
This is the first video that popped up when I searched "no power to rh wire detected" I had the nest plugged in for over a year with no issues. I tried moving the red wire from the Rh to the Rc and it turned right on. This was on a Nest 3rd Gen
Same!
Same thing here. I stripped a bit more insulation, switched from Rh to Rc and presto
I’m having the same problem with the nest E I get all cables connected well. But don’t know where the brown cable come from? Or how can I do to run the brown cable?
Hello! Just buy an additional transformer for 24v
How can I put my A/C google thermostat on recirculate while the pollution outside is so bad here in Detroit?!?!
I FIXED IT DIFFERENTLY: All I did was delete it from the home app, factory reset the thermostat and go thru the setup again. (I tightened some wires additionally but they weren't loose). Hope this helps somebody.
I installed the C wire. Still getting the error. I have an old oil burning furnace. Any suggestions??????
the guide says to try to charge it with the micro USB so I am trying that too. mine has been fine for 8 years.
I already have a common wire hooked up but I had the same thing happened to me today for some reason....I have 5 wires. No more. What can I do ?
What did you try Roger? I'm really hoping by adding the C wire to mine it'll fix this constant broken thermostat..
Thanks for the idea!
I'm getting this error, but I've had my Nest tstat for almost three years with no isses. Also, I only have two wires, which are already connected. Any advice?
I’m having this same issue after 4 years of having the thermostat. What fixed your issue?
the brown wire was from the previous thermostats ? or you added it ?
I have the same problem and found out that I also have the brown wire , should i just plug into "C" ?
I added the brown wire. I was told that Common wires are usually black.
Hello, I’m having same issue, how did you add the brow wire where is come from?
I only get this error when heating, not cooling. Really annoying.
Nest is junk. Got the an error on the coldest night of the year. Had to troubleshoot at 2am by removing the ac wire. Yellow. What a joke. Definitely a nest issue. Back to old reliable Honeywell.
Actually this is an issue in which the ac has a low pressure safety switch. Any powerstealing thermostat would have haf the same issue. When the outsidr temperature reaches a certain low temp, the ac unit will shut off power to itself in order to prevent it from running by accident, which will cause system damage. When this happens, the nest cannot charge itself because there is no power flowing through the yellow y1 wire. The easy fix is to either remove y1 and temporarely lose access to your ac unit, or to have a common wire, common maker, isolation relay, etc, installed. This is an extremely common feature in many ac units. Again, any smart, powerstealing thermostat will have the same issue.
Gamma1227 I've never heard of this AC unit feature before, but my Nest was throwing an error about the Y1/AC wire so I unplugged it and we're all good now. Thanks for the info and solution!
If the NEST trips out, would thst cause Boiler to cut out?
Please, I need help with my nest. It says:"the power from your equipment to the thermostat may be off."
Just bought this and I'm not going to deal with this crap so back to Lowes it goes.
Hi how to fixed E102? Suddenly show error yesterday
Before you do any of that check switch first if you have one next to your furnace. Ours was off, we turned on and Thermostat worked as normal. Easy fix to same error message. Second potential easy fix if above did not apply to you. Verify circuit breaker. I would turn off switch and then back on. It doesn't hurt anyways other than resetting clocks if any just like when one loses power.
I'm beginning to think that with the Google / Nest partnership it's using more power and having no C-Wire is the issue! Mine is doing this also so I've ordered a Venstar C Wire power kit!
Okay but why are you yelling
@@albertalmaguer7362 Me or the guy in the video...LOL...I think your asking why the guy in the video is yelling right...I didn't type my reply above in CAPS so the yelling isn't me. Whilst I'm here I might as say that it's been 2 years that I added the Venstar C Wire Power Kit and it's still operating flawlessly!
Thank you for this video, just saved me a huge headache!!!
My red wire has a float switch attached for the overflow. And the float was just stuck in the up position. No need to rewire as i think a lot of people did. Switching to another unused wire like a brown would have bypassed my float.
Hmmm.. opposite in my case. I unplugged the Common and bam! Turned on!
Thank you!
Yup me too. Only happens E195 code during the summer cooling cycle. Nest has allot of problems.
thank you
Fuse box wasn't tripped. Ended up tightening the screws holding red wire on the furnace side and restarted the nest. That seems to have fixed things
Brown or blue wire to C, thx!
Still having the same problem - once I got the C wire connected it stops recognizing the RH wire.... The HVAC guy says its the Nest and to try to get a new one. Any ideas?
Check if the C wire is also connected to ur main hvac unit
I'd ask for my money back
I don't get it, how do you just "activate" a brown wire. Wish I could just activate them all to work right.
Rude people in these comments telling my man to hurry up...damn, y'all don't know how to fast forward or what? Even better yet, keep a cheap ass back-up thermostat for emergencies.
Make sure all the wires are plugged in far so that the tabs are all pushed down.
I o😢q 😢rn g
my R & C wire is connected at both ends but still wont work
When the battery in the nest thermostat starts to go bad it will give you an error. But if you run a common wire that will rectify the problem.
Mine solution was different, same code. The blower fan continued running and got LED code 33 on the furnace, that combination = limit switch fail. Tested switch and stuck open, replaced switch and now working again.
ever since the update my wifi disconnected for weeks and recently no rh power. good thang the blue C wrie was tucked away behind the thermostat. it was never needed prior to software update. connected C wire to furnace C marking on circuit board and all is werking fine again with wifi and nest unit charging.
Had mine a day… now this
the brown one was longer
There is some other problem that you are masking with this Common wire fix.
Also, check if your toddler turned off the furnace switch...
I was going to get a nest i heard to many issues with this product such as it will stay off if you have a power failure to messing up the heating and now ac no thanks not worth it.
The appt. complex installed these things a month ago... mine quit... appears to be not charging. Good idea, wait till they get these things right. BTW, took off a perfectly working old honeywell (the round one). It was prolly inservice for 10 years or so... just sayin
There is absolutely no way that thing works for 6 months prior to this video. They don’t work without a common wire
Sean, I have had mine for 3 months and it got the same error after being installed that long running with no common wire. I believe what happens is the Nest battery gets too low and then it does not work properly. Just a guess since right now, I have my old thermostat reconnected so I have heat.
Checked Battery voltages and indeed, mine worked until the thermostat battery got below 3.6V. Now with a common wire, it stays at 3.9V
Bullshit!!! Manufacturer should have been much clearer about the need for additional wiring. Not going to pay an electrician for this. Not easy for me to wire in my home. I just buy a new unit and return the old one every 3 months! I'm on my 7th "exchange"!
Great
Don't forget one of the most overlooked causes of E-codes..
The door switch on the furnace/ac unit guys.
All I did was unplug the nest from the wall and put it back. It works now
CHECK AND REPLACE FUSE ON FURNACE. NEST THERMOSTAT STILL WONT WORK UNLESS YOU REPLACE COVER ON FURNACE
Possibly a thicker gauge wire would solve the problem. Any kinks in a wire and cold temperatures can affect electron flow.
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That makes zero sense..I've had mine for 5 years with the same furnace and now all the sudden it's nkt enough power. Bullshit
Its f update, i got same issie
Screw it. Throwing it out
Float switch on AC unit
Got a common but have the same problem. Think its the nest.
Dannie Kemp have u contacted nest? They dont seem to realize that people are having these problems. Im having same problem. Might try the blue wire tomorrow but if it doesnt help im calling and asking for someone who knows something because so far they seem clueless.
Hurry the f*ck up!! My house is hot!!!!!
😅
This thing has been a total piece of shit the whole time. I fully regret buying it.
what's up????????????????? I'm pooping!
PLEASE, JUST CHECK DRAINAGE IT WILL FIX IT
but what if you live in an apartment and have no individual drain to clear. help
I HAVE THE SOLUTION. just take off all the wires ( rc , y, etc ) then put them back. As easy like that, and the thermostat will work again. Should be a bad update.
Nest sucks. Don’t buy.
Que chistoso hablan estos vatos ..😂
Stop talking so much and get to the point
You talk too much. Get to the point.
Useless
Stop talking so much and just get to the point
I seriously didn’t mean to be rude it’s just that today is the coldest day of the year being -35 and my nest thermostat just decided to stop working so I was frantic to try to find a quick fix so I do apologize if I’m being rude
STOP SAYING "HERE" SO OFTEN