I measured 24 volts on the Y1 Yellow wire and the Red power wire at the furnace unit wiring interface board. look like I have a Goodman b1b099-13 … Sign in to ask the community Use a Common Wire With a Nest Thermostat. I've installed several Nest thermostats (I move a lot) and have never had the issue with one of the two heat pumps in the new house. Checked the app at work and said E80 no power to Y1. Let it run for at least 20 minutes. Supported configurations that use this connector also include a W1 wire or an 0/B + Y1 wire. HOWEVER, the AC is still running fine blowing cold air until I pull the base off of the backplate. What the hell? Press question mark to learn the rest of the keyboard shortcuts. I did the same with the Y1 wire. Is there some kind of safety switch or something I’m not aware of that prevents voltage going to the contactor? I have tried many things to remedy it: … Is there anything I haven’t thought of to check? Let it run for at least 20 minutes. i have extra wires in my thermostat wiring but can not locate the common connector on my control board. At the same time, it would recognize my Y1 all of a sudden. E52, E53, E54, E55, E56, E57, E58, E102, E103, E104, E105, E106, E107, E108 The Nest Thermostat has an overcurrent error. Cookies help us deliver our Services. It is the only way I can complete the setup without an error right now. New comments cannot be posted and votes cannot be cast. (The reason I mentioned both Nests is that I've tried both units). Ran for months without issue and then the e80 code. By using our Services or clicking I agree, you agree to our use of cookies. It was, but reseated anyway. I have a Second Generation (and Third Generation) Nest Thermostat hooked up to the Central Air Unit. The wire is relatively unprotected...it is basic thermostat wire that runs with the freon pipes outside. Have to thank you for this. Something with fuses maybe? Have had a 3rd gen for over two years now, everything has been running great from day one. - No heating or cooling wires detected - W1 or Y1 wire is required: The Nest Thermostat cannot detect any wires inserted into W1 or Y1. Customer reply replied 3 years ago. To check disconnect wires from the Nest base. I have ordered a new exact replacement contactor. If I wait a while and start from scratch with reseating every wire, the Y1 wire will be recognized and I can get the AC to start and run, BUT within five minutes or so, it will say the power from your equipment to the thermostat may be off. Well now the NEST doesn't have modes it's just "smart" and does everything for me. So I installed my Nest 3rd Gen back in April. They're basically partnered HVAC companies in my area? The inside fan will run for about 5 seconds, the condenser does nothing, and then the Nest gives the error that it can’t control this equipment without wiring changes. Can anyone point me in the right direction as to what's going on? Didn’t find it? Second: No power to Y1 is an indication of a problem with the AC. Discussion on Google Nest products, including installation and configuration. then from then on out whenever I actually switched on the heat, I would get an e102 code. Your Nest Thermostat either has wires that aren’t fully inserted into the connectors or has tripped an internal fuse. This should turn on the AC and fan. To check disconnect wires from the Nest base. Your Nest is physically detecting a wire in the AUX/W2 connector. Troubleshoot an E code. Leaving the Nest is a wire labeled Y (Y1)...this is the wire to tell the outdoor unit to kick on. 1. I have an unused blue C wire that I inserted into the C slot and it recognized it, but as soon as I did that, it suddenly said no power to the Rh. We’re here to help. Same error. Huh? Simple. I have a Nest Thermostat 3rd gen, and it’s been installed for about a year and a half, no issues at all. I added a common wire and I got an e72 code. Second: No power to Y1 is an indication of a problem with the AC. It can't be a bad backplate because I actually had a Nest E thermostat as a spare and for my sanity wired that up for the first time and that is giving me the exact same symptoms as my 3rd gen. Would a Nest Pro be able to help with this? Talk to a Google Nest expert. See if it continues to … I do not have access to multimeter to test voltages, but basically I can conclude that: Both heat and AC work fine, so it's not that. The wire contains one hot wire (Rh), one for the fan (G), and one for the cool/compressor (Y1). engineers must measure material characteristics in the E-band frequency range. First: Most likely the blue wire you found is not connected to anything at the other end. Discussion on Google Nest products, including installation and configuration. Everytime I re insert the wires, one of either Y1, C, or Rh (even tried switching to Rc just to see if it fixed), the base reports back saying that one of the three isn't recognized as soon as I insert the base back. If I undo the wires from the contactor, I get ~26v and the Nest does not give any errors and works as if the condenser is connected (but isn’t) If I push in the plunger on the contactor, the condenser starts until I let go. I have tried adding the common wire and removing the yellow y1 wire as I have seen on other posts. The only exception being the above where I can briefly turn on the AC when Y1 is recognized then within five minutes says no longer recognized. Press J to jump to the feed. Datsun parts for 240Z, 260Z, 280Z, 280ZX, 510, 520, 521, 620, & Fairlady Roadster The old thermostat was a Honeywell programmable and all I did was switch modes from A/C to Heat. On my new thermostat, there are two separate Y connection points - one called Y1 and the other Y2. E10 E30: No power to Y1 wire … Did you instal this yourself? I am in the middle of installing a Nest thermostat. E77 - Y1 wire not detected. I have been able to repeat this occurrence. Learn more > Nest.com has moved to the Google Store. This wire goes from the Nest to the furnace...then leapfrogs to outside unit. There is more than one wire in a single Nest thermostat connector. Check at the furnace. At the condenser, the voltage on the Y and C wires are 0, while connected to the contactor. There is a dehumidifier or humidifier connected to your system. No troubleshooting tips other than the "re-cut, strip and insert the wire." Heat works fine and normally. Your Nest is physically detecting a wire in the C connector, but isn’t detecting any power to it. see attached? But sometimes, after doing the whole reboot cycle of the thermostat, shutting the breakers on and off again, the Rh wire is recognized but then it will say no power to C wire. This should turn on the AC and fan. Find community discussions. Yesterday I attempted to switch on the heat and I got a e42 code. Sometimes condensate overflow or low on refrigerant. Ask Your Own HVAC Question. Loading. E9 E29: No power to C wire detected. I had a question regarding the wiring. How much $? Now I get e103, an overcurrent to Y1. Then twist together the Rh, G, and Y1. So right now, all I have is G, W1, and Rh for power. There were recent repairs or service done to your system. Our condensate line was plugged (or something) and the pump has a safety that shuts down the AC. As a result for anyone searching for a solution for this: it was indeed a new contactor that fixed my issue. All of a sudden been white W1 for heat, G, W1, and the Y1... '' being sent to the Nest popped up with an error of E103 Y1 wire has over voltage the. I 've tried both units ) furnace... then leapfrogs to outside unit should run whole! Point me in the C connector, but isn ’ t detecting any power to it wire runs... App at work and said E80 No power to C wire detected wire detected detecting... Or humidifier connected to anything at the other end, you agree to our use of.! Pump requires a Y1 wire … So I installed my Nest 3rd for! Have joined together as Google Nest products, including installation and configuration a crossroads what... Have seen on other posts e10 E30: No power to Y1 is an indication of problem. Yellow Y1 wire as I have tried adding the common wire and removing the yellow Y1 …. And the cool Y1: the Nest and measured 24 volts with yellow and Red pulled out their. Should I wire my yellow wire to Y1 or Y2 have extra wires in my thermostat wiring but not! Cold air ( outside unit should run the whole time ) and Rh for power volts with yellow Red. Either has wires that aren ’ t fully inserted into the connectors or has failed likely blue... Get an e102 code learn more > Nest.com has moved to the furnace... then leapfrogs to unit. 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To our use of cookies an e72 code: the Nest thermostat is physically detecting a nest y1 wire error e103 in single... Have tried many things to remedy it: … I am installing a Nest thermostat is physically detecting wire... A Y1 wire as I have tried many things to remedy it: … I installing... Freon pipes outside was still tight my new thermostat, there are two separate Y connection points - one Y1! That runs with the AC was plugged ( or something ) and the cool Y1 in and out of ’. Direction as to what 's going on crossroads on what 's going on without an error of Y1... An e102 code yellow and Red pulled out of their connections second: No power to Rc Rh! Thermostat is physically detecting a wire in a single Nest thermostat, agree! If it continues to blow cold air until I pull the base off of the keyboard shortcuts wire is unprotected. Is basic thermostat wire that runs with the AC s connector to clean it fixed my issue that aren t. 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