A fan that runs continuously typically means there’s a bigger issue. This indicates you have more than one stage of heat and more than one fan speed. This includes things like: Most HVAC companies will do all these things for you. The first thing you need to realize is that it’s perfectly normal for your HVAC system fan to continue to run for a few minutes after the air condition stops. Remove the Nest from the wall (if you haven’t already). It causes issues with the Nest thermostat’s operation. amzn_assoc_search_bar = "true"; You have to go with what you’re comfortable with and what you enjoy. This is the best way to achieve the best cooling in your home and save money. Air conditioner is turned off but fan keeps running. Otherwise, your fan will only run while the system is actively heating or cooling your home. If your Nest thermostat isn’t getting enough charge for whatever reason, it will not work properly or cause your AC to power on and off. My AC is set to 77F and the thermostat reaches that temperature but the AC keeps running. Here’s how to fix your Nest thermostat: Turn power off to your furnace. It would heat for a bit, and then shut off. For some reason the Nest thermostat was always 2 or 3 degrees behind what the house temp was. What could be the causes for this? Control humidity. A smart thermostat like Nest learns without being laboriously programmed when you’re most likely to be home and what temperatures you prefer throughout a given day or season, adjusting automatically or via your command over a Wi-Fi connection to keep you comfortable without running unnecessarily while you’re away. However, if the fan runs by itself for more than a couple minutes, then you know there’s an issue. The Nest relies on the AC running to charge. Our house keeps heat in pretty well so it wouldn't kick on for a while after that. But in some rare cases a common wire is needed to deliver consistent power to the Nest Thermostat while allowing normal operation of the heating and cooling system. In case you have multiple fan wires, you need to use a Nest Pro for your Nest thermostat installation. amzn_assoc_tracking_id = "steverotter-20"; This will for the AC to kick on. Type above and press Enter to search. If your blower fan is continuing to run after the system has already turned off and you made sure your thermostat isn’t set to the ‘on’ position, then you’ll want to try and pinpoint the issue. Michael, Your Nest thermostat was probably set to MAX COMFORT on your heat pump balance, which is why it was kicking in AUX heat even … The cause of this problem can be the result of a number of possible issues including extreme temperatures, a broken thermostat, a faulty relay switch, or even a damaged short circuit. I wired Nest the Same exact wiring as the old thermostat which is : Y1 W1 G RH RC. Dixie Howell Sr. says. If the Nest thermostat isn’t getting enough power from W or Y and there is no Common wire. After installing Nest, we find that the heater is running almost constantly. Nest Thermostat E: Press the ring and choose Settings Schedule. All google products report back to the mothership. Let it run at this setting for awhile, maybe an hour, to get the Nest battery charged up. As the air conditioning system cools down, the blower fan pulls the warm air from inside of your home, runs it through the air conditioning system, and then blows the now cool air back out into your home. The Nest thermostat could never catch up and the AC was always running! Your Nest Thermostat is physically detecting a wire in the W1connector, a wire in the AUX/W2connector, and aG2(fan) wire in theY2connector. In frustration and desperation, as a test, I removed the Nest from the wall and replaced it with the programmable Honeywell thermostat I bought just 2 years before. It’s just using a “smart” feature that, frankly, isn’t very smart. There are several reasons why your HVAC thermostat keeps changing temperature on its own, but the most likely cause is you have it in program mode. It is set at 72 degrees with an OAT of 50-60. With the Honeywell thermostat, not only does the temp stay constant in the house, but the AC doesn’t have issues, the thermostat keeps up and the AC turns off more frequently since the house reaches the desired temp faster. My Honeywell Thermostat Says Wait: What to do Next? Here’s how to troubleshoot. The blower fan in your air conditioning is a separate electrical system from the cooling unit. If the Nest doesn’t turn on after installation and the Red LED is blinking on front, the Nest thermostat battery is low and needs to be charged. Enter us! For example, if it’s a particularly hot summer and your air conditioning is running a lot, your Nest … The Nest Thermostat will determine when the filter needs changed after 1000 hours of usage, instead of just reminding you at set intervals every time. 1st, 2nd and 3rd gen Nest Learning Thermostat: Press the ring and choose Schedule . There’s no reason why the fan should run for hours on end. To turn the blower fan off, simply set your thermostat to the ‘auto’ option. If you leave it where it is, the Nest will slowly charge and eventually turn on. It was a really hot day in July and the AC wasn’t staying on for more than 5 minutes! You shouldn’t face any challenges during the troubleshooting process – guidelines are quite simple. The Nest Thermostat runs on a rechargeable lithium-ion battery which recharges its self through your HVAC system’s wiring. With Nest, the indoor fan blower randomly turns off for 3-10 seconds, then back on for few to several minutes. If you live in … However, if you cannot perform the task on your own, don’t hesitate to contact the repair service provider. Heating & Air Conditioning Contractor. Make sure that any humidity control features are not active. Hidden Agenda of Covid Masks and social distancing, You can purchase Nest thermostats HERE on Amazon, Arrests and Executions of Famous people starting? Another function to check before calling a professional is whether the thermostat keeps the room at the correct temperature or not. Check to see whether it’s your blower motor or the whole furnace system that’s running non-stop. As a side note, I no longer use google as a browser, I use duck duck go. I have AC and it’s been a month now! This feature is to provide increased circulation in your home. In fact, to keep your system running extremely well, it’s recommended that you change the filters every month. Enter your email address to subscribe to this blog and receive notifications of new posts by email. When your furnace keeps running after the temperature has been reached The first thing you’ll want to do is check the blower motor. From the Nest App. What is happening January 6, 2021 in Washington, D.C.? With the furnace running turn off the switch. With the Nest thinking on its own about when to turn on or off, by sensing movement, it’s always going to try and keep up. I'm removing a Nest thermostat that our plumber installed last spring and that has never functioned properly (it won't work for both heat and A/C) and installing a Honeywell 5000. Why Does My Smart Thermostat Keep Turning the A/C Off? It’s important to note that if you have your thermostat selected to the ‘on’ option, then your blower fan will run continuously. I hope this Nest thermostat troubleshooting guide has helped you. Before you start troubleshooting your Nest thermostat. What happens is the thermostat consumes some of the power from your heating or cooling to recharge its self. Make sure your Nest thermostat is connected to your wifi. I waited for 10 minutes to let everything drain itself of power then powered everything on again. You know what else I noticed? Power sharing, I have found, to be a pain in the rear. These were just my reasons for getting rid of it. However, they work together as a team. Having your air conditioner continue to run after you’ve turned it off is an issue that you’ll more than likely be able to resolve by utilizing the information here. It may also say “Cool” depending on what you already have it set at. On your thermostat: Go to the schedule screen on your thermostat. If the power to your system is switched off or there’s a blackout, the battery has enough capacity to keep working for a while. I'm removing a Nest thermostat that our plumber installed. This is a BIG ONE! If your Google Nest thermostat won’t turn on and you see a blinking red or green light, or no light at all, there could be a power issue or your thermostat may have frozen during a software update. The Nest Thermostat does not support multiple stages of heat and multiple fan speeds at the same time. Remember, the blower fan might run a few more minutes after the cooling system has turned off. If you recently installed a smart thermostat and discovered that it randomly turns the air conditioning or heat off, it probably isn’t broken. During regular use your thermostat’s screen may automatically turn off after a period of inactivity, but it should also automatically turn back on when it senses someone is nearby or when someone uses the app to control it. 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To force the AC to kick on, either on the NEST app or the NEST thermostat itself, turn the AC down to kick on at least 10 degrees cooler than what you want it set at. I recently purchased a Nest Thermostat (3rd Generation). You can purchase Nest thermostats HERE on Amazon and check out the line of HONEYWELL thermostats HERE. Sure, it was cool to have the Nest thermostat app on my phone where i could play with settings and such, but as a general rule, you should set the desired temp and forget it. Save my name, email, and website in this browser for the next time I comment. I ran into a situation that resulted in an incorrect diagnosis of a faulty thermostat by NEST support. If your system does not have C wiring the thermostat charges its self when you run your heating or cooling system. After 2 years of using the Nest I went back to the Honeywell thermostat. Before we begin, it’s important to have a good understanding of the air conditioning system. GUESS WHAT? 2021, Arrests and Executions of Famous People Updated 2021. I have run into all these issues with the NEST thermostat, and while I thought the Nest thermostat was really a cool device, I NO LONGER USE IT! amzn_assoc_ad_mode = "manual"; The honeywell takes a double AA battery so I replaced that with a fresh one and connected everything up. See all photos. My Thermostat Is Not Reaching the Set Temperature: Diagnose the Problem. According to our history in the Nest app, it … if the fan runs by itself for more than a couple minutes, then you know there’s an issue. When the air conditioner is running during the summer, it may not necessarily be functioning in a way that optimizes your home’s humidity level. amzn_assoc_marketplace = "amazon"; RELATED: How to Make Your Nest Automatically Detect When You're Away Press Esc to cancel. My old thermostat was working perfectly. 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