Y1 WireThe O/B wire can have many configurations. Y1 and Y2 wires might be used instead if you have a two-stage system (i. You need a good connection in the Y1 connector to turn your cooling system on as needed. Even the thermostat states everything is wired correctly, yet the system wont blow cold air for longer than 30 seconds before shutting off again. If the error change changes, then you have a problem with your system. Find the LOW VOLTAGE wires to the "Saver Switch" and temporarily place a jumper wire across the two leads that connect to the "Saver Switch" unit. Remove the Y1 wire from the base by pressing down on the button next to the connector while gently pulling on the wire. Only air conditioners with second-stage cooling are labeled “Y2. The wiring at your ecobee thermostat The wiring at your terminal block/air handler/furnace board The wiring at the Power Extender Kit (if applicable) The wiring at any wire splice. Another safety switch is usually attached to the furnace/air handler's. The Y1 wire must be securely connected to both the Nest thermostat and the HVAC system in order to receive power. Replace the thermostat display and. Nest Thermostat technical specifications Find specific details about Google Nest thermostats such as dimensions, certifications, compliance with environmental standards such as ENERGY STAR®. This wire goes to the G terminal on your new thermostat. If you have only single stage compressor, then you should bridge Y1 and Y2 and just run Y1 to the thermostat. Basically, the solution was to connect the K wire to the Y1 wire. The Y1 wire is actually just for cooling. This could easily be done on the menu. Since getting the error, I’ve followed the troubleshooting guide, removed all the wires and re wired them. This could be a problem with the HVAC system rather than the thermostat. I have tried many things to remedy it: New Control Board (no change). Inside at the furnace the red from the outdoor unit should go to Y1 and you should have a corresponding Y1 coming from your thermostat to connect on the furnace control board. The Y1 wire is actually just for cooling. com/ythiJustAnswer Customer: HVAC Issue: Getting a E103 "Y1 Wire Failure" from Nest 3rd Generation thermostat. What Is the Difference Between Y1 and Y2 on Nest Thermostat. 1 Kudo Share Reply Go to answer Jade122333 Community Member In response to Patrick_Caezza Options Mark as New. taking out the Y1 wire seemed to do a trick. In terms of the Dip Switches I currently have them set like this: SW1-1 - OFF SW1-2 - ON - To use a two stage thermostat using Min - Max heat SW1-3 - OFF - Should I change this to ON since I have an Aprilair 600 Humidifier? Is this considered a By-Pass Humidifier?. If you have a C wire, place it into the C terminal on your wall plate. On my new thermostat, there are two separate Y connection points - one called Y1 and the other Y2. Take a picture of the wire connectors Take a picture of the wires and connectors on your system’s control board. If you have a heat pump system, the Y or Y1 wire controls your system’s compressor. Overcurrent help codes that begin with the letter E are typically caused by miswiring the thermostat during installation, or a worn part on the system’s control board which requires service by a. See the diagram below for the role of each wire in your system: S – Indoor and Outdoor Wired Sensors Y – Compressor Stage 1 (Cooling) Y2 – Compressor Stage 2 (Cooling) G – Fan C – Common. Yellow Thermostat Wire (Y1 and "Y2") is the most common type of thermostat wire that connects to the air handler (indoor split-system unit). HVAC Issue: Getting a E103 "Y1 Wire Failure" from Nest 3rd Generation thermostat. (Streamline installation) Experience: During setup, the detection routine found that the Y1 cable was not connected. Instead, Y1 and Y2 wires might be utilised in a two-stage system if necessary (i. Y, Y1, Y2: The Y wire tells your HVAC system to turn on the air conditioner when your thermostat says it needs cooling. Basically, the solution was to connect the K wire to the Y1 wire. W/B: The W/B terminal controls the heat relay or valve. 6IaBQvJjGvw2YVKzTln9AKac-" referrerpolicy="origin" target="_blank">See full list on support. If you have any splice points on your Y wire, double-check to ensure that all splice points are secure. On my new thermostat, there are two separate Y connection points - one called Y1 and the other Y2. About a week ago the Nest popped up with an error of E103 Y1 wire has over voltage. The yellow wire connected right to the contact switch. It most often wires to the air handler (indoor split-system unit). Also, please restart the thermostat after the wiring changes by pressing and holding the screen for 10 seconds until it shuts down to refresh, and keep me. Y1 refers to ordinary or one-stage cooling, which is what most of us use at home. Replace the display back on the base and switch the power back on to see if your Nest Thermostat Unit is getting any power. Let's look at the G wire. Sonny: HVAC Technician: Inside at the furnace the red from the outdoor unit should go to Y1 and you should have a corresponding Y1 coming from your thermostat to connect on the furnace control. Incompatible thermostat wires:. I had a guy that replaced the two electronic elements at the condenser,. com/ythiJustAnswer Customer: HVAC Issue: Getting a E103 "Y1 Wire Failure" from Nest 3rd Generation thermostat. My workaround for now is to turn on the AC from the Hunter thermostat upstairs (Zone 2) at the same time, so that both dampers are open and the cool air is distributed in both zones. Yellow Thermostat Wire (“Y1” And “Y2” Wire) Y terminals are for the connection to the compressor relay. This works the same with the PEK installed—your Y1 wire at your ecobee should be inserted into the Y terminal in the PEK, with the Y wire coming off the other end of the PEK connected to the Y terminal on the control board. Yellow-colored Y wire with the code "Y1" is usually used. Your AC probably has an automatic shutdown switch when the refrigerant pressure gets too low in cold weather. Around 6pm the same day, the thermostat gave a E 183: problem with the Y1 wire. The biggest culprit for this code is damage to that wire. Y/O: The Y/O terminal is used to control the cooling condenser. 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. I said to myself, maybe this works for Ecobee3 too. Hello! I'm having problems with my Nest thermostat where it keeps saying my Y1 wire needs checked and that it can't operate my equipment that additional wiring is needed. It appears that error code often indicates too much voltage on the wire. Take a picture of your current thermostat's wiring Always take a picture of your current thermostat's wires before you remove it from the wall and install a Nest thermostat. The thermostat uses one wire to control the primary functions of your HVAC system, such as heating, cooling, and fan. Get a new thermostat wire. Y1 wire problems on Nest Thermostat. What is the Y1 wire on Nest - Home Automation Technology What is the Y1 wire on a Nest thermostat? Share Watch on nest e80 no power to y1 wire Watch on Nest Wiring Diagram: Full Explanation! Watch on. Then wait until the usual time the Y1 wire fails. This can be caused by a defective transformer, power spikes or a short in the circuit to the outdoor ac unit making the thermostat sense a spike. On my old thermostat, the yellow wire was connected to the outlet "Y/Y2". So I checked and even cut fresh wire just in case there wasn't good contact since the switching of thermostats. I did as you suggested and disconnected the Y1 wire from the thermostat. Instead, Y1 and Y2 wires might be utilised in. Also, please restart the thermostat after. Y wire with “Y1” code is usually yellow-colored. Installation steps at the furnace circuit box. Only air conditioners with second-stage cooling are. ago Normally the error moving with the wire means that it is not a Nest issue. Swap the Y1 and G wires and see if the error code is for a problem on the G wire. The wiring at your ecobee thermostat The wiring at your terminal block/air handler/furnace board The wiring at the Power Extender Kit (if applicable) The wiring at any wire splice points or wire nuts/marrettes Having these photos handy will ensure faster service and will help us identify any potential wiring issues sooner. This could be a problem with the HVAC system. For 2 stage, Y1 runs at 42% and Y2 runs at 100%.