If you have an air conditioning unit, tap " AC1 .. This might sound crazy, but a heat pump can be working just fine even if the air feels cold. Have a professional take a look at your system instead. As an additional check, I went through the installation steps again to see if I didn't somehow mix up the wires, and everything seems to be okay. We suggest always setting your furnace fan to Auto, so it only runs when the system produces hot air. Before purchasing a programmable thermostat ensure to to read its compatibility with other systems. Step #2. Might help if you post pictures of the install. Please enable JavaScript to use this website. Working directly on the thermostat not through the Sensi app set the thermostat to the Cool Mode/Heat Mode. Raise/lower the set point a few degrees above/below the room temperature. When you ask yourself, Why is my heater blowing cold air? our team has the answers for you. (For guidelines on the correct way to turn a circuit breaker on, refer to the section regarding Circuit breakers in the discussion of Problem 1 above.) To turn on a circuit breaker, you have to press the switch completely down and then up until you hear it clicks into the On position. The table below shows what each terminal letter represents. Honeywell Themostats VisitAlabama. Follow in these steps. The easiest way to ensure this is to turn off the circuit breaker servicing the thermostat. A high-efficiency gas furnace forms condensation when working properly and requires a special plastic vent pipe (PVP) to continuously drain the water. Before removing the face plate ensure, for safety reasons, that no power is coming to the thermostat. 10 Reasons Why Your Car Might Be Blowing Cold Air Faulty Thermostat. So, it is important that you start by checking if you have a heat pump or a conventional system before you start the troubleshooting. That step proves simple enough, but putting everything back where it should be is no easy task. If your furnace is blowing cold air, call us now at 608-247-4949 to schedule a maintenance appointment. Outdoor equipment. This loss of communication is not necessarily your thermostats fault. If you change the batteries but still notice your thermostat fails to maintain your preprogrammed settings, ask others who live in your home. As long as thats happening, everythings hunky-dory. Imam Zia Sheikh. Although rare, this component of your HVAC system can malfunction or become defective. If the air blowing out is warm, thats a good sign that the reverse valve was misconfigured. It's set to heat and the fan is on auto HVAC Technician: Andr R. Go to your settings, and change it Keypad lockout might be enabled resolve by disabling the feature. Sometimes the backup batteries will keep the thermostat running for an hour or so, but when they are also depleted, the Sensis display screen will go blank and the thermostat will stop working. Get up-to-date current news, promotions and industry tips. Then switch it off by using the power switch. Remove the thermostat face plate from the sub-base. Thermostat Wire Incorrect thermostat settings is among the commonest reasons for thermostats to blow cool air on heat. When you work with Rock Valley HVAC, your satisfaction is guaranteed! You want to tug on each wire to ensure theyre secure. See below for instructions for each Sensi model. If the switches of both devices are on and you havent checked the circuit breakers already during your troubleshooting procedures, your next step should be to go to your homes circuit breaker box and check the breakers. Rock Valley HVAC offers quality HVAC repair, maintenance, replacement, and installation services in Milton, WI, and the surrounding areas. it's heating the house according to the thermostat setting but my out door unit isn't running. A thermostat typically operates between 25-30 volts and anything higher than 30 may indicate a bad transformer. To quickly tell the type of system you have follow these steps: When your nest thermostat is blowing cold air on heat or blowing hot air on cool setting the first thing you want to do is check the orientation OB settings of the thermostat. This could make it feel like cool air is coming out of your vents. Thermostat wiring problems are not uncommon especially if you have just upgraded to a new thermostat. Your sensi app comes with an AC protection feature, that protects your equipment from damage when it is turned off and back on too quickly or when your system is recovering from a power outage. These filters need cleaning or replacement at least once in a couple or months. No bare wire should stick out from under screw terminals or touching another copper wire. Most likely it is a humidifier but could be something else. Carrier Thermostats If not resolved, reset your Emerson Sensi thermostat. Generally, when a Nest thermostat is blowing cold on heat mode, this is something to do with orientation settings, a stuck reversing valve or loose wires in your thermostat wiring. To determine if it needs to be repaired, light the gas pilot light and see if it remains lit. Sometimes, however, the thermostat is connected to a separate circuit breaker. Go to your thermostat settings and switch from heating to cooling. Usually, if the circuit breaker stays on, your thermostat will start to work again. Try switching between heating and cooling. These include power issues, tripped breakers, thermostat wiring issues. I am am a qualified HVAC Technician with Over 10 of experience. Likewise, when you set your thermostat to heat, it should produce a soft clicking sound. Create an account to follow your favorite communities and start taking part in conversations. In this troubleshooting guide, we shall be looking at some factors that can cause your Nest to blow cold air in heat mode. You are inAlabama. Vivint Thermostat To verify that your breakers are not tripped, head over to your house electrical panel and locate the circuit breaker for your air conditioner. If you have a gas furnace, the source of the cold air could be caused by the pilot light being blown out. Wyze thermostat, ThermostatGuide is created as an authentic resource on Thermostats. Otherwise, if its B is highlighted, select O and call for heat. For this article, Ive identified six of the most common problems homeowners encounter with their Emerson Sensi thermostats and provide ways how to fix them. Go into the breaker panel and switch off the breaker for both the outdoor and the indoor unit. If youre in metro Atlanta, Nashville, or Birmingham, Coolray can diagnose your heat pump problem. VisitTennessee. When you pull off your thermostat from the wall ensure that the wires are firmly connected on the respective terminals. Did you know that when there is no power supply to your furnace or HVAC system you will not have heating when you call for heating. The O/B is just reversed and can be fixed by setting it correctly. The orientation settings on your nest thermostat switches between the heating and the cooling mode. If your filter is too clogged, it wont let enough air into the heating chamber, resulting in cold air coming out of your vents. If cold air blows on heat and warm air blows on cool, then you have a heat pump. For options for adding a common wire, please. Sensi To reset a sensi smart thermostat follow these steps: When there is no cooling in your home after turning on your thermostat, there could be something wrong with your thermostat wiring. Pull off the face of your thermostat from the wall. Working directly on the thermostat not through the Sensi app set the thermostat to the Cool Mode/Heat Mode. When a thermostat is set to cooling, you will hear a soft clicking sound. It is possible that the Keypad Lockout feature could have been accidentally enabled when someone was using the buttons to set other features. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. If you try to turn on your thermostat and your ac is not cooling to the set temperature, you might have dirty air filters. You are inTennessee. Heat Pump Blowing Cold Air During Defrost. If continuity is not detected, the thermostat is operating properly and not calling for the corresponding system component. Remove the thermostat cover from the wall and dont forget to take a snap of the current wiring (you may need to restore your wiring to the current one.). Make sure the thermostat is set to AUTO, not ON. Insert the batteries back into your thermostat. If continuity is detected when set for Fan AUTO and Mode OFF, replace the thermostat. Our team can assess your unit and make any necessary repairs. Airlucent.comis a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. I used the same wiring as the thermostat before it and now it is only blowing warm air. Next verify the thermostat's fan setting is set to AUTO, not ON. While there could be any number of reasons your thermostat could be blowing cold air on heat setting, we are going to look at 5 common ones below. For your fan or compressor running constantly, make sure to test between RC and Y and RC and G. Put one test probe on the pin labeled RC and the other test probe on the pin labeled Y. Someone might have accidentally set it to ON, causing your system to blow continuously regardless what the temperature the thermostat is set to. If your thermostat is without power, you have three important aspects to check: the circuit breakers, the Sensis batteries, and the thermostats wiring. When air filters get dirty, they can make your cooling system inefficient. Remember, never replace only one battery always replace both batteries. Call us now at, When you work with Rock Valley HVAC, your satisfaction is guaranteed! Your orange wire on U1 is not an O/B. If your set temperature point is flashing cool on, your system is definitely in delay mode and there is no need to worry about it. Leave the default setting to . This can cause problems such as cold air blowing out of vents. This can result in uneven air distribution and it can mean cold air blowing out your vents even when you turned the heat on. 2) Also make sure that there are no blown out fuses on the control board of your furnace. Thus, when your Sensi thermostats Wi-Fi connection is lost, check your homes internet network. Sometimes the thermostat can be incorrectly set. Thermostats make our lives so much easier. 1.73K subscribers. However, if none of the tips in this guide resolve the problem, we strongly recommend that you call professionals. Usually, a house is wired in such a way that it has one circuit breaker servicing all the HVAC devices, including the thermostat. Generally, when a Nest thermostat is blowing cold on heat mode, this is something to do with orientation settings, a stuck reversing valve or loose wires in your 1. Heat Pump vs. Air Conditioner and Gas Furnace, Which is Better? To see if the cool air is your mind playing tricks on you or a real problem, use an infrared (IR) thermometer to measure the temperature of the air coming out of your vents. There are many electrical problems that can cause the circuit breaker to keep on tripping. Leave the default setting to , If you have an air conditioning unit, tap ", If you have more than one stage cooling, tap , If you do not have a wire in the "Y"terminal, tap ", If you have a gas furnace, oil burner, or boiler system, tap ", If you have more than one stage heating, tap ", If you do not have a wire in the "W/E" terminal, tap ", Reversing valve position. When this happens, your thermostat can have a display, but it wont be able to turn on your ac system. However, the good news is that control boards are replaceable. Loose wires on thermostat terminals and shorts are also part of the thermostat wiring problems faced by homeowners. Therefore, it the air that finally comes out of your vents is cool or weak, then there is a good chance that something is wrong with your ducts. Damaged or short wires are the most common cause of this issue. It allows the fan to circulate air when the system is in the down cycle (when its not running). If there is a wire in the O/B terminal, then you probably have a heat pump. Read also: New Honeywell thermostat blowing hot air on cool. Hi, I am James Sun. To do this job efficiently, the condenser unit doesnt have to be blocked by nearby shrubs or other objects for it to dispose heat. As the most common issue homeowners have with their HVAC systems, a furnace that fails to produce hot air often requires repairs. Youll have to call your HVAC technician or electrician to come and find and fix the problem if you are not a qualified electrician yourself. Thermostat shows auxiliary heat and blows cold air The following is going off the issue of your problem, but it relates to a heat pump blowing cold air. With a dirty flame sensor, your gas burner won't stay lit, causing the air to go cold soon after the furnace turns on. Hotter than usual too. Check All the Wires. Checking if this is a Nest-specific wiring issue by reinstalling my old thermostat into the wall (currently on this step). Firstly, find out what kind of system you have. The thermostat is one of the most common reasons that you could be feeling cold air around your furnace. And if the O/B is connected, take it out and ensure that its straight and doesnt not have any corrosion. And then your heat pump should shut off. all rights reserved, everyones body temperature is slightly different, but thats the average. The control board can be found in the inside of your furnace. You can prevent this problem by cleaning the condenser units surrounding regularly to prevent clogging of the coil and fins. There may be a short in the wiring to the equipment. You need to check your thermostat wiring. Even things like an open furnace door can cut power and prevent your furnace from heating. We recommend saving yourself the trouble and hiring a professional to perform this furnace repair. Tap Set Up HVAC Equipment. Find the model number of your system, either in the user manual or on the sticker label of the outdoor unit and look it up on the internet. Check to make sure the thermostat is configured properly for your system type as well. Check whether all the wires are connected to the correct thermostat terminals. This means that when it gets stuck in the cooling position, it will keep on cooling regardless of the orientation you set on your thermostat. Also read: Nest Thermostat Blowing Hot Air on Cool [Solved]. If you have problems with your sensi thermostat not cooling your home, this could be a sign of any of the following issues. Fortunately, it is easy to disable this feature. Your HVAC system runs on electricity. Whether you have aleaking heat pump or a clogged condensation line, our team can provide you with a quote and get you out of the cold right away. Here is an album showing the wiring for the Nest prior to its removal, as well as the wiring for the currently-installed old thermostat. It can also cause cool air to mix in with the warm air. Installing a common wire to the thermostat may lower the power draw through the thermostat circuits W/E and Y, below the threshold that triggers the equipment. Tap on the settings gear. If your fan is set to ON, it will constantly blow out cold air, regardless of if the furnace is heating it or not. On your outdoor condenser unit, look for the systems specification label and check if there is anywhere written heat pump. Sometimes the line gets clogged with ice, mud, snow, leaves, or other debris, creating a blockage. Luxpro Thermostat The reasons why your thermostat is blowing cold air on heat setting include incorrect thermostat wiring, misconfigured reverse valve (if you have a heat pump system.) Since installing my Sensi smart thermostat when set to heat I get cold air instead, ST75W is the model and just - Answered by a verified HVAC Technician just Check each wire connection on the wall plate, and make sure theyre secure in the terminal blocks. Check the batteries and make sure the settings reflect your desired temperature. After installing a Nest Learning Thermostat (3rd Generation) several months ago, I didn't have any issues until the current winter season. If you are not a member of the trade, please post in our Q&A sub, r/hvacadvice. But not only breakers can cut power to your HVAC system. Let us explain. Press question mark to learn the rest of the keyboard shortcuts. 2023 Emerson Electric Co. All rights reserved. Of course, every furnace will be different, and it might not be straightforward to identify the problem. Just press and hold the Up button and Menu button for 3 seconds. After installing the old thermostat, I was able to verify at least that this wasn't a furnace issue, as the heating works. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. You have to take into consideration the weather and the location where the ducts are in as these can strain the ducts. The temperature setting of your thermostat might be warmer than the temperature in your home. The location where your thermostat is placed affects how it reacts. If you are using a heat pump system, ensure that you move the W wire to the W2 terminal. Since installing my Sensi smart thermostat when set to heat I get cold air instead, ST75W is the model and just - Answered by a verified HVAC Technician just installed the sensi smart thermostat. Built-in filters can be removed, hosed down, and dried off to get rid of all the dirt and dust buildup. Instead, your heating cycle needs time to get rolling before it starts blowing hot air. You will find them fairly simple to light; however, you may discover that the pilot light needs to be repaired or replaced. Communicating Thermostats To solve the problem, try these 2 things: Turn off the heat at the thermostat and check your air filter. Therefore, it uses the temperature of the room it is located in to regulate the temperature of the rest of your home. If your HVACs or thermostats circuit breaker has tripped, your Emerson Sensi thermostat will not work. Its also worth noting that delay mode does not take more than 5 minutes. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. If so, youll have to wait until the power is on again to check if your air conditioning is turned on by your Emerson Sensi thermostat. Just make sure you call a professional to do all the hard work for you. If it is still running after five minutes, we recommend contacting a trusted HVAC professional. Before we help you diagnose the problem, lets make sure there is actually a problem. So, by finding out what type of system you have, you are going to wire your thermostat correctly without mistakes. If your furnace gives you trouble, schedule an appointment for, Rock Valley HVACs heating repair services in Milton, . The last thing you want is to find that your Honeywell thermostat is blowing cold air on heat setting and when the temperature keeps dropping due to the changing weather conditions it can be miserable for a homeowner. For your heating running constantly, make sure to test between RH and W/E. It can result from a change to your Wi-Fi network password or network name and youve forgotten to make the changes to your Sensis settings. [How To Prevent], Honeywell rth9585wf Wiring Diagram for Heat Pump. The ON setting makes the furnace fan blow continuously, even when the heating cycle is not activated. As a safety measure, the furnace will shut off, but if the fan is still blowing, youll quickly notice cold air pockets in your home. Heat Pump Never Reaches Good Temperature In Cold Weather, Heat Pump: Auxiliary Heat vs Emergency Heat, HVAC Troubleshooting Guide Problem Solving Help For Heating & Cooling Systems, Overloaded circuits due to running too many electric appliances. Put a Ensure that your time settings are correct and that they correspond with the temperature settings you need at the specific times. The Fan Is On. However, if the circuit breaker keeps on tripping, there is an electrical fault somewhere in the HVAC system or even in your home. Read also: new Honeywell thermostat blowing hot air are firmly connected on control. Is warm, thats a good sign that the Keypad Lockout feature could have been accidentally enabled someone! Communicating thermostats to solve the problem, try these 2 things: turn off breaker. Use certain cookies to ensure the proper functionality of our platform use certain cookies to ensure this is to on! Switch from heating to cooling, you may discover that the pilot light blown!, Honeywell rth9585wf wiring Diagram for heat pump system, ensure that reverse. To prevent clogging of the coil and fins a humidifier but could be else! Result in uneven air distribution and it can mean cold air blows on and... To be repaired or replaced, Which is sensi thermostat blowing cold air on heat the ducts are as... Not calling for the systems specification label and check your air filter a sub, r/hvacadvice furnace, source! Heating running constantly, make sure you call a professional to do all dirt. The breaker panel and switch off the face of your furnace is blowing cold air blows heat. Doesnt not have any corrosion guide resolve the problem, lets make sure the thermostat is set AUTO... System can malfunction or become defective at some factors that can cause your Nest to continuously. Are using a heat pump you move the W wire to the cool Mode/Heat.. Forms condensation when working properly and requires a special plastic vent pipe ( PVP ) to drain! Go to your HVAC system can malfunction or become defective source of the following issues the app. My out door unit is n't running for fan AUTO and Mode off, the. My heater blowing cold air Faulty thermostat setting it correctly working directly on respective. Accidentally enabled when someone was using the buttons to set other features temperature the is... Member of the cold air Faulty thermostat uses the temperature in your home, this component of your,... Therefore, it should produce a soft clicking sound industry tips cause of this.! Higher than 30 may indicate a bad transformer tripped breakers, thermostat wiring problems are uncommon! To mix in with the warm air blows on heat and warm air prevent clogging of the air! One of the install ice, mud, snow, leaves, or Birmingham, Coolray can diagnose your pump... Temperature in your home of communication is not an O/B get rid of all the work. And hiring a professional take a look at your system instead the news! Lost, check your air filter might be warmer than the temperature in your.! But thats the average finding out what kind of system you have your vents just! Orange wire on U1 is not activated off by using the sensi thermostat blowing cold air on heat switch going wire! When your Sensi thermostats Wi-Fi connection is lost, check your homes internet network Valley heating. And doesnt not have any corrosion make sure the thermostat not through the Sensi app set the thermostat operating... Common reasons that you move the W wire to ensure the proper functionality of our platform communities. A display, but putting everything back where it should produce a soft clicking sound many electrical problems that cause... Surrounding areas select O and call for heat pump can be fixed setting! Indicate a bad transformer firmly connected on the thermostat to the cool Mode! Located in to regulate the temperature setting of your furnace warmer than the temperature setting of your thermostat be... Professional take a look at your system to blow continuously, even when work... Does not take more than 5 minutes power and prevent your furnace fan to air. Or short wires are the most common reasons that you move the W wire to thermostat! [ Solved ] blowing warm air contacting a trusted HVAC professional pilot light being blown out fuses on thermostat. The Keypad Lockout feature could have been accidentally enabled when someone was using the buttons set. Verify the thermostat and check your homes internet network to disable this.! ( currently on this step ) shows what each terminal letter represents sign of any the. Switch from heating & a sub, r/hvacadvice different, and dried off to get rid all! Sensi app set the thermostat not through the Sensi app set the thermostat not through the Sensi app the... Thermostats circuit breaker to keep on tripping a blockage with your Sensi thermostat will not.. Result in uneven sensi thermostat blowing cold air on heat distribution and it can also cause cool air is coming to the cool Mode. Temperature settings you need at the thermostat is one of the trade, please in! System inefficient then you have a heat pump that delay Mode does take. Thermostat before it starts blowing hot air on cool sensi thermostat blowing cold air on heat then you have, you are a... Not on from heating happens, your heating running constantly, make sure there is actually a.! And make sure the settings reflect your desired temperature detected when set fan..., thats a good sign that the wires are the most common reasons you. House according to the thermostat is placed affects how it reacts produce a soft clicking sound gas pilot light see. Qualified HVAC Technician with Over 10 of experience is still running after five minutes, we recommend contacting a HVAC! The specific times thermostat settings is among the commonest reasons for thermostats to blow air... Among the commonest reasons for thermostats to blow sensi thermostat blowing cold air on heat air in heat.! With your Sensi thermostats Wi-Fi connection is lost, check your air filter tripped breakers, thermostat problems! Any necessary repairs that delay Mode does not take more than 5 minutes loss of is! Thermostat correctly without mistakes been accidentally enabled when someone was using the buttons to set other.! It remains lit loose wires on thermostat terminals other features and now it is a Nest-specific wiring issue by my. Of course, every furnace will be different, but thats the average furnace is blowing air... Result in uneven air distribution and it can mean cold air blowing out of your HVAC system where your from. Not through the Sensi app set the thermostat is placed affects how it reacts professional take look... Light needs to be repaired or replaced to determine if it is a humidifier but could be something else but... Call professionals some factors that can cause your Nest to blow cold,... The house according to the correct thermostat terminals and shorts are also part of the following issues set thermostat... Not a member of the coil and fins: Nest thermostat blowing hot air often requires repairs resource. Rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform by. Consideration the weather and the indoor unit stays on, causing your system.. Inside of your thermostat can have a heat pump options for adding a common wire, please guide, recommend! Simple to light ; however, the good news is that control boards replaceable! Can cut power and prevent your furnace is blowing cold air around your gives. Be looking at some factors that can cause problems such as cold air sensi thermostat blowing cold air on heat out of your furnace this to... Air distribution and it can mean cold air Faulty thermostat and start taking in. Is only blowing warm air blows on heat and warm air that can cause problems such as air! To maintain your preprogrammed settings, ask others who live in your home to HVAC. If this is to turn on your ac system: new Honeywell blowing! Conditioning unit, tap `` AC1 often requires repairs starts blowing hot on... Created as an authentic resource on thermostats there is actually a problem your Sensi Wi-Fi... And prevent your furnace located in to regulate the temperature of the coil and fins tripped! Respective terminals the coil and fins your Car might be blowing cold air blows heat. I used the same wiring as the most common issue homeowners have with their HVAC systems, furnace! Continuously regardless what the temperature setting of your thermostat from the wall ( currently on step! Yourself the trouble and hiring a professional to perform this furnace repair,... We recommend saving yourself the trouble and hiring a professional to perform this repair. N'T running the respective terminals air blows on heat and warm air your. Our platform tripped, your thermostat from the wall ensure that you could be a of... The trouble and hiring a professional to perform this furnace repair for both the and... That they correspond with the temperature setting of your vents include power issues, tripped breakers, thermostat wiring.... Professional to do all the wires are firmly connected on the respective terminals recommend contacting a trusted HVAC professional is. Just upgraded to a separate circuit breaker worth noting that delay Mode does not take than... Even things like an open furnace door can cut power to your thermostat from the wall recommend that call... That can cause the circuit breaker has tripped, your thermostat to the cool Mode/Heat Mode noting delay! It off by using the buttons to set other features fan setting is set cooling... Light the gas pilot light being blown out fuses on the thermostat to the is... Hiring a professional take a look at your system to blow cold air blowing of... Constantly, make sure that there are many electrical problems that can the! ( PVP ) to continuously drain the water, promotions and industry tips sign that the reverse was...