The Nest Learning Thermostat retails for $249.99, while the Nest Thermostat costs $129.99. It's practically half the price, but you do get about half the features. You won't be able to integrate ...Google Nest thermostats are 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.The app will give you a custom wiring diagram to help you install the Nest thermostat. Refer to the following article for step-by-step installation instructions. How to install your Nest thermostat. Note: If you don't find your wiring labels in this article, contact a local HVAC professional. Common thermostat wiresTo determine the status of this wire and if it has power or not, press on the dial and then rotate it until you select the small gear icon, and press the dial once more. Next, turn the dial until you reach "equipment", where you'll see the status of the RC thermostat wire. If the letters "RC" are red, you've lost power to this wire.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 will ensure that Nest’s installed correctly and there aren’t any HVAC compatibility issues. The Nest app will guide you through wiring for the Nest Thermostat E. Below is the wiring diagram for 3rd-gen Nest Learning Thermostats. Note: No matter which thermostat you have, we recommend installation by a Nest Pro because advanced wiring is usually necessary. For instance, your Nest Pro may need to install an additional fil pilote diode ... Contact Us - Google Nest Help. We are experiencing extremely high contact volume right now and estimated wait times will be higher than normal. We appreciate your patience and understanding as we work to provide support as quickly as possible. In the meantime, please visit our Help Center for troubleshooting articles and our Community Forums.Pull the thermostat display off the base. Pull out one wire and inspect it. The exposed part of the wire should be ⅓ to ½ inch long, clean and straight. Re-insert the wire. Important: Make sure that the wire connector’s button stays down. If not, the wire isn’t fully inserted, and the thermostat won’t detect it.Pull the thermostat display off the base. Make sure you’ve completely removed the battery tab. Pull out the batteries from the back of the thermostat display and check that there aren’t any pieces of battery tab left. Put the batteries back in and make sure they are fully seated and facing the right way. Push the thermostat display back ...Options. 03-25-2023 10:28 PM. With Heat Pumps, the preferred location of the Power-input is Rc. Make sure your wires are stripped back enough to get fully inserted into the Nest baseplate. With heat pumps keep in mind that they come in two flavors so to speak. They are called O models or B models.Nest Thermostat E and Nest Thermostat. The Nest Thermostat E and the Nest Thermostat’s star connector also have an O/B label because it can alternately be used as an O/B connector for heat pump systems. Nest Thermostat E. Nest Thermostat. System wire. Function. Y2. Stage 2 cooling. W2. Stage 2 heating. O/B. Heat pump heat/cool changeover valveAug 31, 2017 · The Nest Thermostat E is simple to set up and install. We'll walk you through the entire process of installing your thermostat in the right spot and you'll f... In response to Su. 12-09-2021 04:51 AM - edited 12-09-2021 04:56 AM. Yes you should be able to use any of the Nest thermostats with your setup. Some connections on the Nest wire plate are named differently depending on the particular Nest model, for example there is no R for the Nest learning thermostat, but Rh and Rc, and you would plug ...Installation step by step 9 2. Connect to power and the control circuit Check the heating system’s wiring to determine what type it is. Remove the Heat Link cover and connect the L (live)When it comes to installing or troubleshooting a Goodman furnace thermostat, proper wiring is essential for optimal functionality and performance. However, there are some common mistakes that people often make during the wiring process.Connecting a Nest thermostat to an incompatible system, such as a millivolt, proprietary or high voltage system, won’t deliver the power needed to charge your thermostat’s battery and can damage your Nest thermostat. 4. Check your thermostat’s wiring. Symptoms caused by wiring issues usually occur when you're first installing your thermostat.Google Nest thermostats are designed to work with most 24V systems, even older systems. They work with all common fuel types including natural gas, oil, and ...Turn up your savings. Nest Thermostats can turn itself down when you leave the house, so you don’t waste energy on an empty home and Nest Thermostats save an average of 10% to 12% on heating bills and 15% on cooling bills.Nest Thermostat wiring for heat pump. I am trying to replace my Honeywell Thermostat that is connected to a Honeywell EIM with a Nest Thermostat. I only have a 4 wire (G,B,R and W) ran from the EIM to the thermostat. My understanding is I need to completely bypass the EIM all together. I have a standard 6 wire going from the EIM to the heat ...Heating and cooling on 1st floor thermostat (Nest Learning), 2nd floor heat only (Nest E). Wiring: Y1, G, Rc, Rh, W1 (Nest learning) // R, W (Nest E) Gas heating and 1st floor AC (I believe its a single-stage heat pump but not 100%) Pictures of the zone valves.On 2022-02-21 by Inspectapedia Com Moderator - confusion about old thermostat wiring to new Nest thermostat @Earle Baddaloo, Honestly I'm at a loss. I must be misunderstanding something but I don't quite see how …Here’s how to wire a thermostat using the color code and, FYI, each terminal’s purpose. Attach the red wire to the R terminal (Call for heating and/or cooling). Attach the green wire to the G terminal (Fan). Attach the white wire to the W terminal (Heat). Attach the yellow wire to the Y terminal (AC).November 17, 2021 by Team HomeServe. Google Nest Learning Thermostat Installation at a Glance. Step 1: Remove old thermostat. Step 2: Mount Nest thermostat. Step 3: Connect to Wi-Fi. A major attraction of the smart home revolution is the ability to use a single control panel to manage all sorts of home functions that used to run separately.The Nest thermostat will not turn on after installation. 12. Set up your Nest thermostat: After it's finished starting up, the Nest thermostat will guide you through setup. Then you'll tell your thermostat a few basics about your home and your heating and cooling system so it can help keep you comfortable and save energy.Press the thermostat ring to bring up the Quick View menu. Turn the ring to Settings and press to select. Turn the ring to Technical Info and press to select. There are a few different sections with information about your Nest thermostat's sensors, your Wi-Fi network, your thermostat's serial and model numbers and much more.The Nest Learning Thermostat retails for $249.99, while the Nest Thermostat costs $129.99. It's practically half the price, but you do get about half the features. You won't be able to integrate ...The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating-only, cooling-only, zone-controlled, and heat pump systems, you'll need a C wire or other compatible power accessory3rd gen Nest Learning Thermostat. Installation Guide (12 pages, 0.3 MB) Welcome Guide (2 pages, 0.6 MB) 2nd gen Nest Learning Thermostat. Installation Guide (6 pages, 0.3 MB) Welcome Guide (10 pages, 1.7 MB) 1st gen Nest Learning Thermostat. Installation Guide (7 pages, 0.5 MB) Nest Power Connector. Installation Guide (25 pages, 2 MB) Apple TV. At Google Nest, we make products that are beautiful, helpful and easy to use. The Nest app is no exception. Control your Nest thermostat, arm and disarm your Nest Secure alarm system, see your home with Nest Cam, and get an alert if Nest Protect goes off – all in one place. And receive notifications on your iPhone or iPad.To install a Honeywell thermostat, remove the old thermostat, label the wires, and install the new thermostat by matching the wires up to the device. Use a screwdriver to pry the old thermostat off the wall. Take note of the terminals that ...Go to settings > equipment > select the right heat source and type. From here, you can also test your heating and cooling. This will make sure that your wire configuration is correct following the heat pump wiring from the base. Let us know how it goes by replying to this thread. Best regards,Nov 19, 2021 · Go to answer. M. Marco1955. Community Member. 11-19-2021 10:17 AM. I’m installing a Nest Thermostat for my HVAC system. I have two red wires coming from the system. One is connected to R (heat) and the other RC (cooling) on the old thermostat. The Nest thermostat only has a connection for R .Standard wire colors and terminals: Red wire to "R" terminal: Power feed. White wire to "W" terminal. Heat mode. Yellow wire to "Y1" terminal. Cool mode A/C. Green wire to "G" terminal. Fan mode. Blue wire to "C" terminal. Common wire. Leave any unused wires unconnected. Good luck. Kevin C. Forty-years HVAC tech.Unscrew the two wires from the terminals. Remove the motherboard of the old 2 wire thermostat and put the new 2 wire thermostat in its place. Reconnect the red and white wire, tighten down the set screw, and put the control panel back on. Test the 2 wire thermostat wiring by turning the furnace on.Try these next steps: Post to the help community Get answers from community members Contact us Tell us more and we’ll help you get there. Official Google Nest Help Center where you can find tips and tutorials on using Google Nest and other answers to frequently asked questions. Thankfully, a Nest 3rd Generation Thermostat Wiring Diagram can make the process a lot easier. It will give you an easy-to-follow layout that clearly shows exactly what wires need to go where. This will help you make sure that you have everything wired properly and that everything will work as expected.Installation step by step 9 2. Connect to power and the control circuit Check the heating system’s wiring to determine what type it is. Remove the Heat Link cover and connect the L (live)Nest Heating & Cooling Thermostat Installation & wiring: This article series provides detailed photographs and text describing how to install, make wiring connections, and then set-up a Nest Learning Thermostat, beginning with removing the old wall thermostat, labeling its wires, preparing the wall for the new thermostat, then installing the Nest Thermostat and getting it working nicely.If you recently purchased a Honeywell home thermostat, you might find yourself flipping through the user manual in search of answers. The Honeywell home thermostat manual is an essential guide that helps users understand and utilize all the...Pull the thermostat display off the base. Pull out one wire and inspect it. The exposed part of the wire should be ⅓ to ½ inch long, clean and straight. Re-insert the wire. Important: Make sure that the wire connector’s button stays down. If not, the wire isn’t fully inserted, and the thermostat won’t detect it.Oct 10, 2022 · The diagrams provide a visual representation of how the different components of your HVAC system should be wired. You’ll find diagrams for both 2-wire and 4-wire systems. In a two-wire system, the two wires are connected directly to the Nest thermostat. This type of system is usually used in older homes where the wiring has already been ... Nest thermostat wiring help. I need some help. I’m installing the nest thermostat and it’s telling me that c wire has no power. So I did some digging because on my Honeywell, the c wire was brown, but within the bundle I found a blue wire that went no where. Now I haven’t gone i...May 31, 2022 · Post a picture of the original thermostat's wiring here. There are some setups that require the entry of a Nest Pro ID number and only professionals have those. But, sometimes the compatibility checker is wrong and you just need someone knowledgeable in the quirks of the Nest thermostats to provide some help. which is what I do here. The Nest thermostat wiring diagram for 4 wires pdf outlines the wiring configurations that make the device work correctly. With the help of this diagram, you will be able to understand the connections between your Nest thermostat and its components. For those who are unfamiliar with a wiring diagram, it can be difficult to understand what each ...I need some help. I’m installing the nest thermostat and it’s telling me that c wire has no power. So I did some digging because on my Honeywell, the c wire was brown, but within the bundle I found a blue wire that went no where. Now I haven’t gone into my attic to confirm (I know I need to) but bot...Important: Before you reset your thermostat, write down the wiring information so you can easily enter your thermostat's wiring if needed. On your thermostat, go to Settings Equipment. You might want to do this for other settings, such as system heating type and Safety Temperature as well. Nest Thermostat. Go to Settings select Restart or ...In most homes, installing a Google Nest thermostat is an easy DIY project that takes about 20-30 min. The Nest app’s step-by-step instructions make it easy to install and wire your...Page 2 Basic safety Setup process Read all installation instructions and the safety and 1. Install your Nest thermostat warranty guide before installation. 2. Update your thermostat High voltages may be present! Be sure to turn 3. Turn off the power at the circuit breaker off the power at the breaker panel or unplug 4.Remove the Nest thermostat’s display from the base. Then insert a USB cable into the USB port and the back of the thermostat’s display. Put the other end of the USB cable in a charger and plug it into a power outlet. Avoid using a computer to charge your Nest thermostat. The Nest thermostat screen should now turn on.Hi everyone. I am trying to swap out a Hive system to a Nest Thermostat E in the UK. I am confused by the wiring to the Heat Link. The Hive unit is wired like this: Blue to Neutral, Brown to Live, Green/Yellow to an earth terminal, a Grey wire goes to 3, a Black wire goes to 1, and there is a jumper from L to 1.. W2: If you upgrade to two-stage heating, you need this terminal to control the second stage. Y2: This is for the wire that controls second-stage cooling. X or AUX: If your new heat pump features an auxiliary heater for extra-cold days, this terminal controls it. E: This activates emergency heat in case of heat pump failure.Some systems, including heating-only, cooling-only, zone-controlled, and heat pump systems, require a C wire or the Nest Power Connector. Go to g.co/nest/cwire for details. Replace the batteries by following the directions in the section below so your thermostat can control your system (and you can stay comfortable) while you check the C wire.Hi everyone. I am trying to swap out a Hive system to a Nest Thermostat E in the UK. I am confused by the wiring to the Heat Link. The Hive unit is wired like this: Blue to Neutral, Brown to Live, Green/Yellow to an earth terminal, a Grey wire goes to 3, a Black wire goes to 1, and there is a jumper from L to 1.The screen will turn on as it finishes. 2. Look up which wire to check. Refer to the table below for the wire connector you should check on your Nest thermostat. For instance, if your thermostat shows you an E57 code, you need to check the Y2 wire. Help Code. Wire you need to check. E52, E102 or E182. W1.My old thermostat wiring looks like this: So its good I have a C wire and its running on 24v. The hard thing is the fan control. It's a proprietary 3 speed fan - where do I wire those 4 wires to? ... Help wiring replacement Honeywell to Nest 3rd gen. 0. Is this circuit correct for controlling old 750mv HVAC with NEST. 1.The basic approach is to buy a switching relay that is operated by the low-voltage thermostat and that in turn turns on the 120VAC or 240VAC heaters. You replace the line voltage thermostat with the switching relay, then add low voltage wire from a transformer to power the Nest or other low-voltage thermostat.The Nest Thermostat E’s Heat Link will normally be installed in the same spot as your old thermostat. The app will instruct you how to install the Heat Link with your current thermostat wiring. How to install your thermostat. During installation, the app will guide you to scan the QR code on both the Nest Thermostat E and the Heat Link.Friday. @KKos. Post a picture of the current thermostat wiring. To ensure that I see your reply, please tag me using @Patrick_Caezza. 0 Kudos. Reply. Post Reply. Need help wiring my old Honeywell Chronotherm III to nest learning thermostat. below is my current wiring O W G B Y & R with connect to RC.You can also check your system’s compatibility before purchasing a Nest thermostat with our online Compatibility Checker. Some systems may require a common wire (C wire) or the Nest Power Connector. Go to g.co/nest/cwire for details. To check for compatibility, you only need to know the type of heating system.Overview. Turn yours into a smart home with the Google Nest Learning Thermostat. It remembers what temperatures you like, learns your schedule, and programs itself to save energy. Its sharp 2.08" LCD display with Farsight lights up when you approach. WiFi connected, you can control it with your mobile device, and use it with numerous …Step – 2: Identify the wires. Remove the existing thermostat to expose the existing wires and identify the colors. In my previous house, we had the exact wires that we need to install nest. i.e. yellow, green, blue, red, and white. So, we installed the nest as per the below diagram and it worked great.Connect the New Thermostat. Place the plate of your new thermostat against the wall where it will be located. Check the plate with a level, and mark the screw holes with your pencil. If applicable, drill guide holes before adding anchors to the wall. Pull the wires through the opening of the thermostat’s backplate.Resetting a Honeywell thermostat is simple and only takes a minute or two to complete. Either refer to your Honeywell control manual to reset it or follow the guide below that outlines the steps for resetting a number of Honeywell thermosta...Turn off power to your system at the fuse box or system switch. This will help prevent damage to your system and help keep you safe. Pull off the Nest thermostat display. Check that all connectors that have wires are down (see picture). If needed, re-insert wires so that the connector button stays fully pressed down.Turn up your savings. Nest Thermostats can turn itself down when you leave the house, so you don’t waste energy on an empty home and Nest Thermostats save an average of 10% to 12% on heating bills and 15% on cooling bills. Honeywell is one of the biggest names in home heating. Whether it’s a basic analog thermostat found in an older house or a state-of-the-art smart home interface that manages heating, cooling and more, countless Americans use Honeywell therm...Apr 5, 2023 · Options. 03-25-2023 10:28 PM. With Heat Pumps, the preferred location of the Power-input is Rc. Make sure your wires are stripped back enough to get fully inserted into the Nest baseplate. With heat pumps keep in mind that they come in two flavors so to speak. They are called O models or B models. Check g.co/nest/works to find out which Nest thermostats might need the Nest Power Connector to work in your home. Get Pro installation at checkout or install it yourself. The Nest Power Connector doesn’t require any new wiring or drilling.Jun 6, 2022 · Then, go ahead and remove the faceplate of your Nest Thermostat to expose the wiring terminals underneath. Step 2: Connect the C-wire adapter to your furnace air handler or zone controller.Program your Nest thermostat, and adjust the temperature of your home right from the app. Monitor your HVAC. Nest thermostats help actively detect hard-to-spot issues, remind you when it’s time for new filters, and more.The first step is to ensure that the unit is level and securely mounted. The next step is to connect the wiring from the 3.5mm jack to the transformer and the furnace. Make sure to double-check all connections before turning on the power. At this point, you should have completed the Nest Thermostat E wiring diagram 4 wire to 3 5mm.On your thermostat, go to Settings . Select Equipment. Select Continue Continue. Select Heat Pump. The Nest Thermostat defaults to an O setting for heat pumps. If the O option is highlighted, select B. If the B option is highlighted, select O. To make sure the issue is resolved, test your heating and cooling again. 4.Nov 19, 2021 · Go to answer. M. Marco1955. Community Member. 11-19-2021 10:17 AM. I’m installing a Nest Thermostat for my HVAC system. I have two red wires coming from the system. One is connected to R (heat) and the other RC (cooling) on the old thermostat. The Nest thermostat only has a connection for R .Turn up your savings. Nest Thermostats can turn itself down when you leave the house, so you don’t waste energy on an empty home and Nest Thermostats save an average of 10% to 12% on heating bills and 15% on cooling bills.The first step is to ensure that the unit is level and securely mounted. The next step is to connect the wiring from the 3.5mm jack to the transformer and the furnace. Make sure to double-check all connections before turning on the power. At this point, you should have completed the Nest Thermostat E wiring diagram 4 wire to 3 5mm.May 24, 2023 · Turn off the power to your heating and cooling system. Locate the wiring panel on your Nest thermostat. Remove the panel cover to access the wiring terminals. Locate the “C” terminal and connect one end of the wire to it. Connect the other end of the wire to one of the humidifier’s solenoid valve wires.Heat Pump Balance. Nest thermostat Heat Pump Balance settings are for systems that have a heat pump and auxiliary (AUX) heat. You can choose how much AUX heat your system will use when your heat is running. AUX heat can cost about 2 to 5 times as much as running your heat pump. Heat Pump Balance lets you select a level of comfort and savings ...If your current thermostat has a jumper wire, do not enter it into the compatibility checker or ... Turn off power to your system at the fuse box or system switch. This will help prevent damage to your system and help keep you safe. Pull off the Nest thermostat display. Check that all connectors that have wires are down (see picture). If needed, re-insert wires so that the connector button stays fully pressed down. Turn the ring to Settings and press to select. Choose Nest app Get Entry Key. Your thermostat should show you a 7-character key to enter in the Nest app. 4. Restart your router and modem. Restart your router and modem to reset your internet connection. You should also restart any Wi-Fi range extenders or repeaters.Apr 24, 2023 · To determine the status of this wire and if it has power or not, press on the dial and then rotate it until you select the small gear icon, and press the dial once more. Next, turn the dial until you reach "equipment", where you'll see the status of the RC thermostat wire. If the letters "RC" are red, you've lost power to this wire.Plug your Nest Wifi Pro router into a wall outlet. After about a minute, the light will slowly pulse blue to indicate it's on and ready for setup. Note: If your Nest Wifi Pro doesn't show a pulsing blue light, perform a factory reset. On your phone or tablet, open the Google Home app . Tap Add Set up device New device.Jun 18, 2019 · The Nest Thermostat is designed to work even if your home doesn’t have a common (C) wire. ... old thermostat to help you remember. Use trim plate if needed ... INCLUDING TO YOUR WIRING, FIXTURES, ELECTRICITY, HOME, PRODUCT, PRODUCT PERIPHERALS, COMPUTER, MOBILE ...The diagrams provide a visual representation of how the different components of your HVAC system should be wired. You’ll find diagrams for both 2-wire and 4-wire systems. In a two-wire system, the two wires are connected directly to the Nest thermostat. This type of system is usually used in older homes where the wiring has already been ...Nest thermostat wiring help. I need some help. I’m installing the nest thermostat and it’s telling me that c wire has no power. So I did some digging because on my Honeywell, the c wire was brown, but within the bundle I found a blue wire that went no where. Now I haven’t gone i...First, reset your Nest thermostat’s network settings by navigating to Settings > Reset > Network. Next, restart the Nest thermostat itself by selecting Settings > Reset …Nov 29, 2021 · In response to laurentbourg. 11-29-2021 09:52 AM. Not totally sure how to upload a picture but it’s two copper wires, one has blue cloth/wrap and one has white. The thermostat is hooked up to a old Honeywell mercury thermostat and is connecting to the boiler (baseboard radiator heat). Thermostat is heat only. Overview. Turn yours into a smart home with the Google Nest Learning Thermostat. It remembers what temperatures you like, learns your schedule, and programs itself to save energy. Its sharp 2.08" LCD display with Farsight lights up when you approach. WiFi connected, you can control it with your mobile device, and use it with numerous …The screen will turn on as it finishes. 2. Look up which wire to check. Refer to the table below for the wire connector you should check on your Nest thermostat. For instance, if your thermostat shows you an E57 code, you need to check the Y2 wire. Help Code. Wire you need to check. E52, E102 or E182. W1.If you have an old Android phone sitting around collecting dust, and you've been pining for smart thermostat but don't want to drop the cash on one, then the Android Thermostat might be the perfect project for you. If you have an old Androi...Jun 6, 2022 · The adapter kit comes with easy-to-follow instructions on how to do so. Step 3: Once the adapter is in place, connect the remaining leads to the proper terminals and put the faceplate back on your ... Heat Pump Balance. Nest thermostat Heat Pump Balance settings are for systems that have a heat pump and auxiliary (AUX) heat. You can choose how much AUX heat your system will use when your heat is running. AUX heat can cost about 2 to 5 times as much as running your heat pump. Heat Pump Balance lets you select a level of comfort and savings ...The Nest Thermostat is designed to work even if your home doesn’t have a common C wire. Rarely, installing a new C wire may be required. Professional installation recommended for: Dual fuel systems (heat pump with furnace) Whole-home humidifiers and dehumidifiers Y, Y1, Y2: Whenever your thermostat calls for cooling, the Y wire is used to send a signal to your HVAC system telling it to fire up the air conditioner. Y1 and Y2 wires might be used instead if you have a two-stage system (i.e. a high level for extremely hot or cold days, and a low level for mild days). W, W1, W2: Just like the Y wire, the W ...The Nest Thermostat's * connector can accept only one of these wires: W3, E, HUM or DEHUM. The Nest Thermostat is designed to work even if your home doesn't have a common (C) wire.How to Install a Nest Thermostat with 2-Wire System Installing a Nest thermostat is the best way to create a comfortable and energy-efficient home. With its intuitive interface, sophisticated sensors, and sleek design, it's easy to see why Nest is one of the most popular smart thermostats on the market. ... The following tips will help to ...The Nest Thermostat E’s Heat Link will normally be installed in the same spot as your old thermostat. The app will instruct you how to install the Heat Link with your current thermostat wiring. How to install your thermostat. During installation, the app will guide you to scan the QR code on both the Nest Thermostat E and the Heat Link.Speak with a real person who will go out of their way to help you! Call Us: 1-516-482-6313. Text Us: 1-516-703-3460. Live Chat: Look Bottom Right. Email ... It is a common form of a contemporary smart thermostat like the ones by the Nest brand. 5 Wire Thermostat is the most common thermostat for most HVAC systems responsible for all kinds of ...I need some help. I’m installing the nest thermostat and it’s telling me that c wire has no power. So I did some digging because on my Honeywell, the c wire was brown, but within the bundle I found a blue wire that went no where. Now I haven’t gone into my attic to confirm (I know I need to) but bot...Also, sometimes a section of the wiring doesn't need all 5-6 wires - e.g. the branch wire to the A/C actually does not need R or W, it needs Y and C. However 2-wire thermostat cable is manufactured red and white. So expect to see red Y and white C in that location. My theory. My theory is that you're looking at 2 completely different cables there.Oct 11, 2023 · Select Equipment. Select Continue > Continue. Select Heat Pump. The Nest Thermostat defaults to an O setting for heat pumps. If the O option is highlighted, select B. If the B option is highlighted, select O. Select Done. To make sure the issue is resolved, test your heating and cooling again.