Nest y1 wire error

Posted on 07.03.2021 Comments

Sign In Register. Quick Links Categories Recent Discussions. Categories Don M Posts: 1, So I've had it installed for a little over 3 weeks now.

Fast forward to this morning I woke up to a 60 degree F house! The Nest was showing an error of E74 which indicates it can't detect the Rh wire? There is no common wire for the 24VAC so the Nest derives its "phantom" power through the current of the cooling, fan and heating relays.

I got my meter out and did some checking. The Nest goes into a diagnostic mode when its not working correctly and it was showing an open circuit voltage of about. I put my meter in current mode and the heat takes about Ma AC, and the fan the same. So I scratched my head to wonder what could be the problem. I tried switching wire around to see if I could "fool" the thermostat or maybe identify an input that it wasn't sensing for current all to no avail.

I did some resistance measuring and saw that there wasn't any continuity to the outside condenser unit. We recently fell to below 0 degree's overnight in fact I think is was something like So then I think about my experience with refrigeration and figured that the condensing unit outdoors has reached a temperature that if the suction line were to freeze over it would shut down the compressor as a matter of safety.

Troubleshoot Nest thermostat error codes

So I thought I'd try a little experiment- I added a 10 watt 60 ohm resistor in place of the control line going to the condenser unit outside to produce a cooling circuit current of about ma AC. The Nest then came back to life.

I wonder how many calls and unsatisfied customers they get because of this issue. The thing of it is the Nest knows which wires are connected and where it gets its power from.

The other option is to install a new thermostat cable that also includes the "C" for 24VAC common. Anyway the heat is back on and working JonM Posts: They set up a IoT Podcast Listener Hotline where folks can call in with issues or questions and Stacey and Kevin will try to answer it. I use an alternative to the Nest, and had a similar setup. When my last "sorta" smart thermostat died after about 10 years, I used a spare wire in the bundle to connect to up the C wire.

Never had an issue with the system.This is a simple guide to help you know more about how to fix a variety of Nest thermostat problems. If you are having issues with Nest thermostat troubleshooting, the manufacturer offers a variety of online resources to help you understand better the error codes showing on your display and how you can tackle the issues. Keep also in mind that, if you live in very cold areas, there may be some issues with the safety devices to do with the low-pressure valves installed on your AC.

To fix this problem, you should seek professional help to install a common wire. Before proceeding to more complex solutions, it is amazing how a simple reboot can fix most of the problems with your Nest thermostat. Follow the steps below to reboot your thermostat.

This is assuming of course that your Nest Thermostat is on and responsive. Perform a reboot by following the steps below:. This process will cause the Nest Thermostat to restart, a process that takes only a few minutes, and hopefully, solve whatever issue it had. The Nest thermostat will then commence rebooting.

Nest recommends you only try this method if your Nest Thermostat unit is completely unresponsive as they liken this process to turning off a computer rather than shutting it down. Your thermostat could lose unsaved information. This clears out any software gunk or bugs that you may not have noticed yet. The great thing about Nest thermostats is that you can connect them to an app on your phone through Wi-Fi. Connecting the devices is very easy and will only take you a few minutes if you follow the steps below.

If your Nest keeps going offline and you feel like you need more information about the various error codes, then check out the troubleshooting Nest thermostat error codes.

One of the reasons because your thermostat goes offline probably has to do with some technical issues that prevent it from working correctly. But how do you check the battery level? When you see a green blinking light then you know that your thermostat is charged and ready to be used.

Among the other common issue that people experience with their thermostats is when the Thermostat Does Not Control Temperature. This has to do with many factors and one of the most common is dirt behind the thermostat.

Follow the steps below to solve this problem. If you notice major temperature swings in the room temperature, then your thermostat may need some small adjustments. Follow the steps below to fix this problem in no time.Quick Links. See also: Installation Manual.

Nest Learning Thermostat. Hours: 5am-9pm pacific8am-midnight eastern. Table of Contents. Last updated: April 17, Version: 2. Page 3: Installation Overview Determine wiring compatibility before opening Nest packaging. Take off the cover of the old thermostat and look at the wires. Check them against the list of available connectors on the box or visit nest. Page 4: Installation Details Test heating and cooling for two minutes each.

This is vital to any installation. After setting up Nest, you need to run each part of the system for a few minutes. This occurs most often in certain zoned systems.

Troubleshoot E10, E30, E66, E80, E116, E160, E196 and M13 errors

Get more info in the troubleshooting section, starting on page Page 6: Technical Specifications No common wire required with most installations installations 24 bit color 24 bit color Display x pixel display x pixel display 1.

Page 7 2.

nest y1 wire error

Nest will automatically jump these two connectors. However, without a G wire, Nest will not be able to control the fan independent of heating. How do I enter Pro Setup? How do you configure special systems? Below are examples of how to configure a Nest Learning Thermostat to control some of the more complex heating and cooling systems.

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Dual Fuel Systems Nest assumes that your Y1 wire will be used to activate 1st stage heating and cooling for your heat pump. Page 24 Heat Pump: Both auxiliary and compressor lockout temperatures can be changed in the Heat Pump section of the Advanced Settings menu.

Press the ring again when done. Adjust Safety Temperatures No matter the schedule, Nest will never let the home go above or below the safety temperatures. To adjust them, follow these steps: 1. Press the ring to bring up the menu.

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Page Wiring Error Quick Reference Guide When Nest senses what wires have been connected to its base, it automatically configures its software for the system type it detects. Page 27 Y2 wire without Y1wire.

nest y1 wire error

Your Nest is physically detecting a Y2 wire but not a Y1 wire that is required for 2 stage conventional cooling systems or 2 stage heat pumps. Your Nest may have Your Nest either has wires that aren't fully inserted into the tripped an internal fuse connectors or has tripped an internal fuse. Power wire Rc detected. Page 29 Failed to connect. Nest is connected to your wireless network but not to the internet. Important Note: These errors may change with future software updates.Two nights ago my furnace began short cycling.

Short cycling is when the furnace will kick on for a few seconds, then shut off for a few seconds, then back on, then back off, repeat indefinitely. I moved the kiddos into the one room in the house with baseboard heating, and called a service technician in the morning.

With his help and the help of Nest phone support I was able to get everything back up and running. My HVAC setup:. The technician was able to narrow down the problem to my Nest thermostat.

The quickest way to eliminate the furnace as the problem is to:. A thermostat is basically a programmable switch. When your heat comes on the thermostat switches power to the white wire from the red wire.

If your heat comes on after shorting the red and white wires together and is no long short cycling, your thermostat is likely the problem. The explanation I got from Nest phone support was that the extreme cold was affecting the yellow wire that runs outside to the air conditioner somehow. Regardless, removing the yellow wire solved my short cycling problems. Tags: around the home. This entry was posted on Tuesday, January 7th, at am and is filed under Tutorial.

You can follow any comments to this entry through the RSS 2. You can leave a commentor trackback from your own site. I had this same exact problem! After calling Nest support we also found that unhooking the AC wire solves the problem but they also were not able to tell me why. I also found that the charge on the unit had run way down — not sure if this was a cause or a result of the rapid cycling. I was actually out of the house for a couple days so not sure when it started but otherwise it had also been working fine until this polar vortex thing started.

I came across your article looking for a solution, please update if you get more answers. I did have a low battery light, but only noticed it the morning after all of this started. It was cold leading up to the failure so the heat had definitely been running and probably charging the Nest.

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One culprit for a low battery as was explained to me by supportother than what point out in your other post, is he strength of the wifi signal. Maybe this has something to do with the RC and RH. So I would try wiring to the RH in this case and check to see if this helps.

I see in the picture it was wired to RC not RH. I had the same problem, but after adding C-wire no help. After lots of diagnostics and trouble shooting, ended up with incompatible Furnace and AC. Had to add an isolation relay between Nest and Furnace.

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Was cheap, but spent many hours troubleshooting and researching. I came across your article searching for info on the same problem. For the last three or four weeks my system has been short cycling.

This is the second time for me — I went through a round of this in March last year. The difference is my system has a common wire installed. The two different technicians that have examined the problem found the limit switch on the furnace board has failed.Forgot your Password?

nest y1 wire error

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Nest Thermostat No Common Wire- PROBLEM SOLVED -How To Install Nest Missing Common \

Forgot Password? New Posts. Today's Posts. Community Member List. Forum Actions Mark Forums Read. Quick Links View Forum Leaders. Connection for nest thermostat - Y1 or Y2. Thread Tools. Hi everyone. I am in the middle of installing a Nest thermostat. I had a question regarding the wiring. On my new thermostat, there are two separate Y connection points - one called Y1 and the other Y2.

Should I wire my yellow wire to Y1 or Y2?

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nest y1 wire error

Put it on Y1. Nest will give an error if there is a wire on Y2 without one on Y1. Find all posts by Astuff. Installation went smooth and it works perfectly.Please expect a longer than normal response time as a result of recent current events. We appreciate your patience and understanding as we work to provide support as quickly as possible. We encourage you to use our online Help Center and Community Forum for additional options during this time.

The Nest thermostat is designed to work in most cases without a common wire. Instead of using a common wire to keep your thermostat charged, your Nest thermostat can use the Y1 air conditioner wire to power itself. If your air conditioner stops sending power to your thermostat, your thermostat can let you know with one of these errors. There are a number of reasons why your air conditioner might stop sending power to your thermostat.

One possible reason is that your system needs maintenance. If your system breaks down, it will likely stop sending power to your thermostat.

Another possible reason is that you live in an area that experiences very cold temperatures in winter. Your air conditioner may come equipped with a safety device that will stop it from turning on in extremely cold weather to prevent damage. These safety devices, sometimes called low pressure switches LPS or safety cut-out switches, can sometimes prevent your air conditioner from providing your Nest thermostat with power in extremely low temperature conditions.

Then, when it's convenient, call an HVAC professional such as a local pro to come take a look at your system and install a common wire. Wrap the exposed end of each wire you removed with electrical tape so it won't touch any other wires.

Put the display back on the base. Make sure the wires behind are pressed down towards the wall. Your thermostat should click firmly into place. Turn your breaker back on and see if your Nest thermostat is able to get power from your HVAC system. If your Nest thermostat powers on without an error, you should be able to turn on the heat.

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If it does, read below to learn about your next steps: Installing a common wire. You should install a common wire and reconnect your Y1 wire to continue using your Nest thermostat. If your Nest thermostat doesn't power on, remove the display and try to change it with a micro USB cable.

Plug the USB into the back of your thermostat display. Charge the display for minutes, you should see the display power on. Put the display back on the Nest base. Once the Y1 wire is reconnected, you can continue using both your heating and cooling systems. Get an answer from an expert on the Google Home Help Forum. Google Help. Privacy Policy Terms of Service Submit feedback. Send feedback on Help Center Community. Google Nest Contact us. Introducing Nest thermostats Get started Explore features and settings Fix a problem Warranty and manual.

Introducing Nest cameras and doorbells Get started Explore features and settings Fix a problem Warranty and manual. Learn about Wifi products Get started Features and settings Fix a problem Wifi warranty and safety information.

Troubleshoot to get heating back on 1.Nothing better represents smart-home devices--gadgets that let you control appliances in your home via the Internet--better than the Nest Learning Thermostat. The next generation in home heating and cooling, the Nest not only lets you control the temperature via a smartphone app, but also learns your patterns, and will adjust the temperature accordingly.

In doing so, Nest claims its device will save you money, as it won't heat or cool your home when you're not there. But installing the Nest isn't as simple as screwing in a light bulb. It's not too hard, though, and we've created a step-by-step guide to help you through the process. A Philips head screwdriver. Nest thoughtfully provides one with the thermostat, though you may need a smaller screwdriver to remove the wires from your old thermostat.

Each wire coming out of the wall should go into a specific labeled port on your old thermostat R, Y, W or G, for example. Attach the blue stickers in the Nest installation guide to the corresponding wire. If you're lucky, the wires themselves will be color-coded. If your thermostat is labeled or v, or has thick wires, you have a high-voltage system—do not connect these wires to the Nest. Carefully remove the wires leading from the wall into the thermostat, and then unscrew the device from the wall.

Thread the wires through the center of the Nest base plate and, using the tiny bubble level, make sure the Nest is level. Use a pencil to mark the two screw holes. If you want to cover over the screw holes from the old thermostat, attach the trim plate in the bottom of the Nest box to the base plate.

Use the included screws and screwdriver to secure the base to the wall. Screw in the top screw first, but before tightening it, use the level to make sure the base is even.

Insert the labeled wires into the corresponding ports on the Nest. A small tab will depress once the wire has been properly inserted.

Line up the small rectangular connector on the back of the display with the port on the base plate. Follow the instructions on the Nest's display to find your wireless network and enter the password to connect. This smartphone app, available for Android and iOS devices, will let you monitor and control the Nest remotely. After a week or so, the Nest will learn your behavior - when you're home and when you're not--and should automatically adjust the temperature in your home. However, you can still turn it on and off remotely using a smartphone, or locally by turning the Nest's dial.

Here's a link to all of the Nest-compatible devices and services. Tom's Guide. Total project time: About 30 minutes. Turn off power to your thermostat. Locate the appropriate circuit breaker, and switch it to the Off position. Label the wires leading into your old thermostat. Remove your old thermostat. Mark the position of the Nest. Install the trim plate optional.

Attach the Nest base to the wall. Connect the wires to the Nest. Attach the Nest display. Turn the power back on. Switch the circuit breaker to the On position. Connect the Nest to your Wi-Fi network. Follow on-screen setup instructions.