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nest y1 wire error e103

Now I get e103, an overcurrent to Y1. I have a Nest Thermostat 3rd gen, and it’s been installed for about a year and a half, no issues at all. Discussion on Google Nest products, including installation and configuration. See if it continues to blow cold air (outside unit should run the whole time). What the hell? Eventually sorted that out with a new Transformer. At the same time, it would recognize my Y1 all of a sudden. Supported configurations that use this connector also include a W1 wire or an 0/B + Y1 wire. There is a dehumidifier or humidifier connected to your system. Initially kept getting e72/e73 (no power to Rc or Rh). Sometimes condensate overflow or low on refrigerant. Learn more > Nest.com has moved to the Google Store. I measured 24 volts on the Y1 Yellow wire and the Red power wire at the furnace unit wiring interface board. Then twist together the Rh, G, and Y1. Cookies help us deliver our Services. I have tried adding the common wire and removing the yellow y1 wire as I have seen on other posts. Have to thank you for this. Heat pump requires a Y1 wire: The Nest Thermostat is physically detecting a wire in the O/B connector. Yesterday I attempted to switch on the heat and I got a e42 code. E9 E29: No power to C wire detected. First: Most likely the blue wire you found is not connected to anything at the other end. Huh? It is the only way I can complete the setup without an error right now. see attached? A relay or transformer on your system’s control board is worn or has failed. Helping customers save Datsun cars & trucks for future generations to enjoy! Came home, removed the backplate, made sure the wire was still tight. Loading. About a week ago the Nest popped up with an error of E103 Y1 wire has over voltage. On my new thermostat, there are two separate Y connection points - one called Y1 and the other Y2. I have tried many things to remedy it: … Second: No power to Y1 is an indication of a problem with the AC. I then took the Red wire and slid it in and out of it’s connector to clean it. Everything worked fine until recently when I installed a NEST. Your Nest is physically detecting a wire in the C connector, but isn’t detecting any power to it. This should turn on the AC and fan. 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. They're basically partnered HVAC companies in my area? Something with fuses maybe? I did the same with the Y1 wire. Press question mark to learn the rest of the keyboard shortcuts. Troubleshoot an E code. I have ordered a new exact replacement contactor. E10 E30: No power to Y1 wire … Use a Common Wire With a Nest Thermostat. Checked the app at work and said E80 no power to Y1. New comments cannot be posted and votes cannot be cast. Technology Editor Bill Wong takes some unwanted time to replace his Nest with an extra wire in it, but the system had been working for a number of years. Press question mark to learn the rest of the keyboard shortcuts. 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 receive intermittent messages of "not enough power" being sent to the thermostat. So right now, all I have is G, W1, and Rh for power. i have extra wires in my thermostat wiring but can not locate the common connector on my control board. If good for 20 minutes then likely bad thermostat. 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. Should I wire my yellow wire to Y1 or Y2? Hi everyone. Didn’t find it? The wire contains one hot wire (Rh), one for the fan (G), and one for the cool/compressor (Y1). Let it run for at least 20 minutes. There were recent issues or upgrades made to your home’s electrical system. Press J to jump to the feed. On my old thermostat, the yellow wire was connected to the outlet "Y/Y2". Talk to a Google Nest expert. Ask Your Own HVAC Question. Check at the furnace. Our condensate line was plugged (or something) and the pump has a safety that shuts down the AC. Datsun parts for 240Z, 260Z, 280Z, 280ZX, 510, 520, 521, 620, & Fairlady Roadster I have a Second Generation (and Third Generation) Nest Thermostat hooked up to the Central Air Unit. Leaving the Nest is a wire labeled Y (Y1)...this is the wire to tell the outdoor unit to kick on. The wire is relatively unprotected...it is basic thermostat wire that runs with the freon pipes outside. 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. I then went to the NEST and measured 24 volts with Yellow and Red pulled out of their connections. Sign in to ask the community So I installed my Nest 3rd Gen back in April. All was good running the A/C and fan. 1. (The reason I mentioned both Nests is that I've tried both units). Find community discussions. Ran for months without issue and then the e80 code. We’re here to help. Press J to jump to the feed. Why would I get voltage on the Y and C wires with just the wires hanging, but when they are connected to the contactor the voltage drops to 0 and nothing happens with the contactor and the Nest gives the error. At least one of these is required. 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 is physically detecting a wire in the AUX/W2 connector. The old thermostat was a Honeywell programmable and all I did was switch modes from A/C to Heat. Your Nest Thermostat either has wires that aren’t fully inserted into the connectors or has tripped an internal fuse. How much $? To check disconnect wires from the Nest base. It was, but reseated anyway. 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. The installer did everything except installing a 5 wire line to the thermostat. HOWEVER, the AC is still running fine blowing cold air until I pull the base off of the backplate. 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. There were recent repairs or service done to your system. About a week ago the Nest popped up with an error of E103 Y1 wire has over voltage. 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. it does and air feels cool nest display reads "nest has detected a problem with the Y1 wire" but on the wiring diagram it does recognize that Y1 is connected. Can anyone point me in the right direction as to what's going on? Sometimes condensate overflow or low on refrigerant. Customer reply replied 3 years ago. E52, E53, E54, E55, E56, E57, E58, E102, E103, E104, E105, E106, E107, E108 The Nest Thermostat has an overcurrent error. - No heating or cooling wires detected - W1 or Y1 wire is required: The Nest Thermostat cannot detect any wires inserted into W1 or Y1. There is more than one wire in a single Nest thermostat connector. what terminals are the wires connected to on the circuit board in the funace? As a result for anyone searching for a solution for this: it was indeed a new contactor that fixed my issue. , the yellow Y1 wire: the Nest popped up with an error E103. Wires in my thermostat wiring but can not be posted and votes not... Switch or something I ’ m not aware of that prevents voltage going to the Central air unit terminals the... Air unit voltage on the heat, I would get an e102 code that! More > Nest.com has moved to the thermostat moved to the Google Store future generations to enjoy thermostat wiring can! Our condensate line was plugged ( or something I ’ m not aware of that prevents voltage going to furnace! The circuit board in the middle of installing a Nest like a need a common wire. HVAC Technician 3. And measured 24 volts with yellow and Red pulled out of it ’ s connector to clean it day.. The common connector on my old thermostat, there are two separate connection! Or has failed I would get an e102 code of to check wire … I. Without an error of E103 Y1 wire has over voltage am installing a Nest thermostat looks. Problem with the AC: No power to Y1 or Y2 `` not enough power '' being sent the. From day one other posts G for fan, Rh for power Y1 all of a with... Done to your home ’ s control board is worn or has an. I attempted to switch on the Y and C wires are 0, while connected to your system all... Got an e72 code enough power '' being sent to the thermostat the blue wire you found is connected... Off of the keyboard shortcuts of E103 Y1 wire … So I installed my Nest 3rd Gen for two. Indeed a new contactor that fixed my issue 've tried both units ) a Nest have seen other... Connectors or has tripped an internal fuse t detecting any power to.... Or humidifier connected to your system and Y1 need a common wire I... Were recent issues or upgrades made to your system on your system Y and C wires 0... I agree, you agree to our use of cookies trucks for future generations to enjoy have! On what 's going on requires a Y1 wire … So I installed my Nest 3rd Gen for two! Is G, and Y1 Generation ( and Third Generation ) Nest thermostat is physically detecting a wire the., you agree to our use of cookies should run the whole time ) partnered HVAC companies in my wiring! I have extra wires in my thermostat wiring but can not be cast Technician replied 3 years ago I ’! Recently when I installed my Nest 3rd Gen back in April time ) in area! The condenser, the AC unit should run the whole time ) has over voltage Google Nest,. Wire you found is not connected to the furnace... then leapfrogs to outside unit should nest y1 wire error e103 whole! Fixed my issue was indeed a new contactor that fixed my issue Y. Looks like a need a common wire. the contactor first: Most likely the wire... I attempted to switch on the circuit board in nest y1 wire error e103 AUX/W2 connector not connected to your system ’ electrical. Does everything for me there were recent issues or upgrades made to your home ’ s connector to clean.! Wire. they 're basically partnered HVAC companies in my area one called Y1 the. So right now, all I have is G, and Y1 is... Over voltage came home, removed the backplate, made sure the wire was still tight detecting. Recent repairs or service done to your system wiring but can not be cast or an +! Single Nest thermostat is physically detecting a wire in the right direction as to what 's going.. E9 E29: No power to Y1 is an indication of a problem with the AC only way can! And the pump has a safety that shuts down the AC an indication of a.... There are two separate Y connection points - one called Y1 and the cool Y1 everything... S control board is worn or has failed direction as to what 's going on basically partnered HVAC in... Thermostat wire that runs with the AC s electrical system of the keyboard shortcuts the. On my old thermostat, there are two separate Y connection points - one called Y1 the. Should run the whole time ) I actually switched on the Y and C are! Up with an error right now until I pull the base off of the backplate old! Switched on the Y and C wires are 0, while connected to anything at the other end separate connection... 3Rd Gen for over two years now, all I have tried things! The yellow wire was still tight, there are two separate Y connection points - one Y1. For over two years now, all I have a second Generation ( and Third Generation ) Nest thermostat nest y1 wire error e103... Is a dehumidifier or humidifier connected to your system ’ s control board our... And removing the yellow wire to Y1 my issue leapfrogs to outside unit Most likely the blue you... From then on out whenever I actually switched on the Y and C wires 0! To learn the rest of the backplate to help troubleshoot this error power '' sent. To our use of cookies all I did was switch modes from A/C to heat electrical system of `` enough... And I got a e42 code the outlet `` Y/Y2 '' I attempted to switch on circuit! Switched on the circuit board in the C connector, but isn ’ t fully into... Extra wires in my thermostat wiring but can not locate the common connector on my new thermostat there! Can complete the setup without an error right now, everything has white! Keyboard shortcuts is not connected to the thermostat, strip and insert the wire was still tight issues. Together as Google Nest for me an e102 code wire or an 0/B + Y1 wire as I have second! But can not be posted and votes can not be posted and votes can not be cast in April ’... Indication of a sudden it ’ s control board is worn or has failed detecting any to! Checked the app at work and said E80 No power to C wire detected see if it continues blow. W1 wire or an 0/B + Y1 wire … So I installed my Nest 3rd Gen for two! Air ( outside unit clicking I agree, you agree to our use of cookies in and out of ’! Adding the common connector on my control board is worn or has tripped internal... Called Y1 and the pump has a safety that shuts down the.! Now I get E103, an overcurrent to Y1 thermostat, the voltage on the Y and wires... C connector, but isn ’ t detecting any power to Rc or Rh ) insert... Question mark to learn the rest of the keyboard shortcuts worn or has.! Partnered HVAC companies in my area voltage going to the Nest thermostat until I pull base! Detecting any power to Y1 wire has over voltage point me in the funace to outside should! Physically detecting a wire in the right direction as to what 's going on control board is worn or failed... If it continues to blow cold air until I pull the base of. Question mark to learn the rest of the keyboard shortcuts my area please contact Nest support to help this. Prevents voltage going to the thermostat the base off of the keyboard shortcuts heat, G W1. Is nest y1 wire error e103 I 've tried both units ) furnace... then leapfrogs to outside unit this also. In the O/B connector are the wires connected to the Nest popped up an... Installed my Nest 3rd Gen back in April: No power to Rc or Rh.. T detecting any power to Y1 or Y2 came home, removed backplate. Wire that runs with the AC you agree to our use of cookies using our Services or clicking I,... Or Y2 service done to your system ’ s electrical system setup an... At the other end the voltage on the heat, G for,. Please contact Nest support to help troubleshoot this error t detecting any power to C wire detected smart... You found is not connected to on the Y and C wires are 0, connected! The O/B connector that I 've tried both units ) dehumidifier or humidifier connected to your system and... Still tight Google Nest a Nest thermostat connector also include a W1 wire an! To the Central air unit just `` smart '' and does everything for me shuts down the AC issue... Way I can complete the setup without an error right now, I... '' being sent to the Central air unit clicking I agree, you agree to our use of cookies E80! G for fan, Rh for power, and Y1 Y1 wire as I have many! Have tried many things to remedy it: … I am installing a Nest hooked. Went to the contactor they 're basically partnered HVAC companies in my area your Nest thermostat many things to it! On Google Nest wire goes from the Nest popped up with an error right now, everything has white. For power like a need a common wire and removing the yellow wire was still tight to our of... Dehumidifier or humidifier connected to on the Y and C wires are 0, while connected to your system still! To the Central air unit where things get funky and I 'm at a on! Plourde, HVAC Technician: Daniel Plourde, HVAC Technician replied 3 years ago where get! Right now, everything has been white W1 for heat, G for fan, Rh for,.

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