nest no power to y1 wire e80

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This video shows how I fixed an error with my Nest thermostat. If I disconnect C, it says no power to Y1. On my old thermostat, the yellow wire was connected to the outlet "Y/Y2". Well during this time, the internal battery will run to, if you take more than one day to fix this. When I just do red and white for heat all good. We’re here to help. As soon as I attached yellow blue and green I get the issue. I had a question regarding the wiring. Then twist together the Rh, G, and Y1. Talk to a Google Nest expert. The Honeywell has a "K" terminal wire where the NEST does not. First: Most likely the blue wire you found is not connected to anything at the other end. Remember, NEST does not recommend using stranded wire, but sometimes this problem can be overcome by the suggestions I made previously. If I unplug the furnace then reconnect the Y1 wire, it works for about an hour then gives me the warning again. Power was restored to Y1, so I thought I fixed it. engineers must measure material characteristics in the E-band frequency range. Second: No power to Y1 is an indication of a problem with the AC. So I checked and even cut fresh wire just in case there wasn't good contact since the switching of thermostats. Please do let me know if you have further questions. Learn more at nest.com/e74. my daughter has a Honeywell T2060F thermostat and wants to install a NEST thermostat. Remove red wire from RED. Not so sure it was actually cut but I did it anyway. Electrician checked wires and they … read more No a/c, just a goodman gas furnace blowing into house thru vents. If so the O and B wires are unneeded and can be removed from the control panel. Learn more > Nest.com has moved to the Google Store. This is 100% repeatable. Datsun parts for 240Z, 260Z, 280Z, 280ZX, 510, 520, 521, 620, & Fairlady Roadster i recently installed a Nest thermostat and it worked fine for 3 days at which point it lost power to the Rh I called nest and they had me disconnect the Y1 wire and i regained power to Rh and they told me i needed a common C which i had installed now i am no longer getting power to the Y1. Check at the furnace. The error is E74 - No power to Rh wire detected. Heater blowing but cold air no heat. Currently I cannot get the nest to boot due to a Y1 no power message, If I disconnect Y1 the nest will fully operate the furnace but obviously not the AC. I checked the thermostat wire where the worker may have accidentally cut it. From RC move it to RH. Your Nest Thermostat isn't electrically detecting your Y1wire, but one is connected to the Nest Thermostat base. Sometimes it works, sometimes not. Also, check continuity from the Y1 wire from the stat back to the air handler or furnace. When I connect the blue wire in the thermostat I get a power issue on the nest e. I was told by nest tech support to disconnect it because it's not grounded. Thermostat is fairly new. Nest Thermostat No common wire - Nest thermostat needs no common wire -problem solved, How To Connect the nest thermostat without a Common wire. Nest doesn’t turn on until it senses both the that wires are hooked up and power is coming to those wires. Use a Common Wire With a Nest Thermostat. This may happen if you’ve forgotten to turn the power back on to the HVAC system or if you turned the power back on, but there was a fuze or breaker blown during the installation process. N5, N25 & N75 No power to W2/AUX wire detected. If your Nest is reading low power or won't charge it may mean that you need to add a common wire transformer. There is no common wire with my system, although there is an extra unpowered white wire that was unused previously. Your Nest Thermostat isn't electrically detecting your W1wire, but one is connected to the Nest Thermostat base. NEST says C wire has no power (was working fine for months). By turning your breaker on/off actually reset the HVAC power therfore providing power to the Y1 cable. Heat pump requires a Y1 wire: The Nest Thermostat is physically detecting a wire in the O/B connector. So what I would try: Zone 1 R to Nest Rh (24VAC Hot) Zone 1 C to Nest C (24VAC Common) Zone 1 W to Nest W1 (Heat) Zone 1 Y to Nest Y1 (Cool) Zone 1 G to Nest G (Fan) Only thing I don't understand is how the fan gets turned on by the second thermostat in Cool mode. The next day, I tried reconnecting the wires while the power was off and then plugged it back in. Just because it worked before doesn't mean something couldn't have changed. Does it make sense that the previous homeowner had a y1 wire running to the thermostat at all? Hello! A common wire transformer is used to provide power to the Nest if your HVAC system doesn't put out enough power and will charge the Nest Thermostat. Diagnose bad sensors as possible cause. 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. Please try to re-seat the Y1 cable from your base making sure it is tight. On my new thermostat, there are two separate Y connection points - one called Y1 and the other Y2. She has a gas furnace and an A/C unit (no heat pump … read more Note that “pulsing” is a term the Nest community has come up with for the problem, and Nest themselves do not seem to name this problem in any specific way. 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. To check disconnect wires from the Nest base. My understanding is that the y1 wire is for cooling, and my house has no air conditioning (we don't need it in this climate). Model GMS80704BXCC. And when this problem occurs it keeps short cycling my AC. – Allan Apr 26 '18 at 0:45 current wiring is Rh, W1, C, G, Y1. Looked like it was cut so I coupled the wire together. No power to W1 wire detected. I am in the middle of installing a Nest thermostat. We had to take off the yellow and blue to make it work, but only heat is working. Both thermostats have a Home/Away setting that detects whether you are in or out of the house and adjusts the temperatures accordingly. Also, can you provide me with the following information - Model number of the furnace, model number of Nest and make and model of old thermostat and I will deal with Nest for you to get proper wiring at this point. Should I wire my yellow wire to Y1 or Y2? All connected all good. Hi all, Just got a Nest 3rd Gen as my heater (Stadt 525e-ea) which is a 24VAC system and the existing wiring had the required Rh, G, W, Y so passed the Nest com Put The Nest Thermostat back on the wall mounted plate and see what happens. That would be the first thing. The NEST showed the problem to be the Y1 connection but actually it was the Red power wire that was not making a good connection. Common problems with the Nest thermostat, what causes them, and how to fix it. When doing your own research on the Nest pulsing problem, look for terms like: pulsing, cycling, short cycle, power leeching, no c-wire, heat-only and cooling-only. See what happens. Installed new 3rd gen Nest, with yellow wire to Y1, green wire to G, Red wire to Rc, White wire to W. Nest thermostat comes on fine, fan blows for fan, fan blows for cool, fan blows for heat but no … Hi everyone. N4, N24 & N74 No power to Y1 wire detected. Still same e80 with y1. Sometimes condensate overflow or low on refrigerant. Then about an hour later, I got the warning again. Discover connected home devices from Nest – thermostats, indoor and outdoor security cameras, smoke and carbon monoxide alarm, security system, video doorbell and more. Helping customers save Datsun cars & trucks for future generations to enjoy!

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