Why Mitsubishi Mini Split Making Clicking Noise? Similar to the thermostat, one of the first things we want to try is resetting the air conditioning unit itself. This 5-minute period is, basically, a safety feature that helps protect the compressor. This is the mode youll use to heat your home. This indicates that your HVAC system is in a delay mode. If I try to activate it, the symbol blinks 3 times, just like the manual stipulates. Your email address will not be published. In such a case, the indoor unit will continue to run as it doesnt really know that there is a problem with the outdoor unit. If your system has been short cycling, it may need some routine maintenance. A flashing snowflake indicates that the system in is delay mode. You can disable the recovery mode in the devicessettings. Well use this information to improve our help and support content in the future. If your Nest thermostat is displaying a flashing snowflake, it means that your Nest is in Eco mode. Press and hold the AC button at the same time as you press and hold the recirculate button. One of the most common reasons for a blinking snowflake on your thermostat is that the thermostat has activated a 'delay mode' as it switches between heating, cooling, or fan modes. In this section, I will explain the most common reasons for a blinking snowflake on your thermostat and Ill start with the most likely and easiest to fix causes first and then work my way down into the less likely and/or more complicated and time-consuming fixes as we go. According to it, if your thermostat has a blinking/flashing snowflake or flame, your furnace or air conditioner has been put in lockout mode to stop your compressor or heat element from cycling too quickly. Do you find yourself wondering if its you or the picture thats not quite level? Unfortunately, advanced HVAC repair is outside of the scope of this article so well have to ask that you call in a professional at this point! As soon as the heater stops blowing hot air, the house starts to get cold again. Check out your user and installation manuals before installing. Then take a Do you need to reset your Emerson thermostat? link to How To Keep Snakes Away From Your House. Your user manual has the steps required to perform a full reset of your Emerson thermostat. If this sounds familiar, Few homeowners rejoice at the sight of snakes in and around their house. Do you need to reset your Hive thermostat? (Detailed Answer! If your home is like most, the air conditioner is one of the most used appliances during the summer months. This time delay mode is usually caused by short cycling in the system. When I push the A/C button the "snowflake" flashes three times and then shuts off. Sometimes you will have to remove a cover or other access panel to see the button. Thermostats typically show a flashing snowflake to indicate that its in Delay Mode. A Low-Battery icon or "I Don't Have Power" message. Note: Before you go too far, be sure that you have properly set up your White Rodgers thermostat! In some cases, simply turning the air conditioning off and back on will prevent the system from going into delay mode. NO Contact Support at 1-855-733-5465 to find a pro-installer in your area. Then in this article, youll Appliance Analysts is a trading Wait 15 Minutes: This sounds silly, but after a recent power outtage from a thunderstorm we found that our central AC wasn't kicking on. If the symbol started blinking right after the initial installation, then the chances are high that the thermostat has not been installed correctly. After the power issues, well want to make sure that your unit is refusing to turn on because of a clogged or blocked drain. Check any AC reset buttons: Some newer air conditioner units have reset buttons which are essentially just fuses as well. If your White Rodgers thermostat has a blinking snowflake, youll need to check both power sources. If your cooling is not working, it's probably due to issues with the following: To begin fixing your cooling, continue to the Air Flow section. This will reset the internal memories and put your Emerson thermostat back in a factory setting. It is important to understand how the thermostat communicates with you. Hold for 5 to 8 seconds. This indicates that the air conditioner is working to heat the air. A power surge through your electrical system may damage the HVAC system components. Once you've confirmed this, continue to. It means that the temperature outside is cold enough to warrant turning on the heat. What best describes the air coming out of your vents? You Do You Need Your Thermostat Repaired or Reprogrammed? Every thermostat also has a number of safety measures in place. When it gets especially hot, you wont want your system down due to lockouts. Press to adjust temperature setting below room tem-perature. Next, well move on to a power issue with the air conditioner itself. The snowflake symbol is a reminder to us that we need to keep the air conditioner in cooling mode when the temperature outside is cold. Thank you. Because of the way HVAC units work, there is typically a fair amount of condensation that needs to be drained away from the unit. If you have a TEMPORARY HOLD, then the temperature setting will change during the next period (wake, sleep, leave, return). Snakes are scary and potentially dangerous, depending on where you live, the type of snakes, and whether you have pets. That may be enough to clear any potential errors with the device. Like the thermostat, the furnace has built-in safety measures to prevent damage to the system or, worse, fires from occurring. Ensure that the breaker isnt tripped and, if it is convenient, go ahead and turn the breaker off and on. Went to a buddies shop and we evacuated 1.6 lbs of refrigerant and put. Is this something you should bring a professional in for? When peak demand hours are in effect, they may lock you out to restrict usage. This also requires some knowledge of your HVAC system components. If your system works too hard for too long, it can cause damage. We've designed six unique living rooms inspired by our favorite feature films. You should always reset your thermostat after a power outage. Keep in mind that these steps involve the wiring. Normally, this is not the same breaker that controls the HVAC unit itself which has different power requirements. Short cycling is when that cycle happens faster than it should. The consent submitted will only be used for data processing originating from this website. If a delay mode is the cause of a blinking snowflake, it should fix itself after the 5 minutes has passed. If not, keep reading! remove waterpump belt, remove hoses, remove 6 bolts holding water pump onto engine, catch waterpump as it falls, clean off old gasket material, put new gasket on new water pump, bolt in place, replace water pump belt, replace hoses, fill with fluid, pray you have a happy snowflake. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Press Auto button on HVAC 3. During this period, the controller remains powered on but no outputs are on except for the flashing snowflake icon on the display. In addition, every time the blower motor starts and stops, it adds wear and tear that can shorten the motors life. This symbol is actually a very important part of your AC unit. Note that Delay Mode is also referred to as Cycle Delay. In some cases, the HVAC technician can evaluate the airflow in your system and adjust the outlets to create a balance that will solve short-cycling problems. Problem: Filter issues. If your HVAC system is too large for your home, one result can be short cycling. Sometimes they can fall out. Read: Why Does The Room Temperature Not Match The Thermostat Setting? The temperature is either set manually or on a schedule and the thermostat sends that information to the HVAC system. It will resume normal operation in about 5 minutes. See your user guide for a detailed list of icons and their descriptions. Should your thermostat indicate a call for cool, then you will need to go check out the furnace itself. Follow along as we explore what the blinking snowflake and delay mode means on your Honeywell thermostat. If your current system was oversized, there isnt much you can do about that, other than start again with a new system. Another potential issue related to the installation is proper configuration. That may be enough to get your air conditioning unit working. When that happens, continue to the next step . If you see a snowflake symbol on your air conditioner, it means that the unit is in cooling mode. Each model of White Rodgers thermostat will have a slightly different procedure for resetting it, but generally it will involve holding down a combination of buttons until the screen turns off and back on. Your system should cycle on in five minutes but check the possible causes above for delay mode. Ultimately, it can even save you money by preventing unneeded damage and extending the lifespan of the system. Weve mentioned that short cycling becomes an issue when your AC is struggling to hit its temperature range. But, dont run the unit without a filter for long turn the unit off and replace your filter ASAP! It's still flashing Disconnect R and C for about 2 minutes. SpacePak vs. Unico: Which High Velocity HVAC System Is Best? 3. Therefore, the furnace has to work harder and the heater is forced to begin blowing hot air again more quickly. On others, the connection is made using a slider switch that has settings called 1-wire and 2-wire. Check your installation guide to see what you have. A low level of refrigerant, loose wires, a malfunctioning thermostat, and issues with the capacitor can also make your outside unit blow cold air. This can be harmful to the equipment, so the flashing snowflake typically signals that your system is delaying turning back on for a while. Dont rely on drips outside to identify a (lack of) blockage as even a partial blockage can keep your unit from moving. This is particularly true if your HVAC system is still under warranty. But do you know how to properly operate your AC unit? You are using an out of date browser. It doesnt mean that your system wont heat or cool your home, it just means its taking a break and will do it eventually. This is simply the process by which the air conditioner prevents short cycling. Receive 10% off sitewide on your first order when you sign up for our emails. Snakes are scary and potentially dangerous, depending on where you live, the type of snakes, and whether you have pets. Do you find yourself wondering if its you or the picture thats not quite level? If the cool on or the snowflake icon is flashing, the thermostat is in delay mode, which can take up to 5 minutes. Thats why delay mode is so important; it protects your HVAC system and helps it last longer. What does a blinking snowflake on a Whiter Rodgers thermostat mean? JavaScript is disabled. The first thing to do is just wait. Heating a room with high ceilings comes with some challenges. What Does the Snowflake Mean on AC? You checked with the utility company to see if your thermostat has been locked out during peak usage hours. Continue with Recommended Cookies. You must press all three buttons simultaneously and hold them down until the display on the thermostat blinks. The snowflake is cooling mode. Put the batteries back in, and replace the wires and the cover plate. There are several different components that could be causing the issue, from a corroded flame sensor to issues with your condensate switch or breaker. If your Emerson thermostat flashes a snowflake icon, the HVAC system has gone into a time delay mode. Resetting the whole system usually helps. when the "snowflake" button is pressed it flashes three times. The furnace or air conditioner is turning on and off at a rapid rate that could damage your HVAC system. Now that weve finished with the easy thermostat stuff, it is time to move on to the air conditioning unit itself. Fixing incorrect thermostat placement, ensuring your HVAC system is the right size, and keeping up with maintenance and repairs should solve the problem. In this case, you must perform a reset on your thermostat. At least it should. this was further compounded by my water pump NOT having a weep hole making it harder to zero in on. This forces the air conditioner to work harder and start blowing cool air again sooner than it would on a cooler day. If your thermostat is battery-powered, try replacing the batteries. In some instances, the problem may be deeper than a short-cycle issue and require more diagnostics and expertise from a trained HVAC technician. IF YOU CAN CHECK THE COOLANT LEVEL IN THE A/C SYSTEM IN THE CAR, YOU WILL PROBABLY FIND THAT IT IS LOW AND NEEDS R-134A ADDED. Read: Benefits Of A Programmable Thermostat White Rodgers is a popular thermostat brand for both residential and commercial heating, air conditioning, and appliance control. What does snowflake symbol on thermostat mean, What does the sun symbol mean on my air conditioner. Tip: dont forget to remove the battery tag once you get a new thermostat installed. What do the symbols mean on my air conditioner? In any case, diagnosing and repairing damage or inadequacies in the electrical wiring that serves your HVAC system is not a DIY issue. If you have a blinking or flashing snowflake on your Honeywell thermostat, or the word heat/cool is blinking, it means your thermostat is in delay mode. And it will keep doing this until you fix whatever is causing your system to short cycle. A flashing snowflake indicates that your thermostat has entered delay mode, which is a safety measure for Honeywell thermostats. 9am to 5pm CDT. Depending on where your unit has been installed, the drain system will look a little different. This is the mode youll use to circulate air in your home without cooling it. Generally, you will be able to find a large, red reset button somewhere in an obvious location on the outside of your HVAC unit. Fuck you google for possibly ruining my day and telling me I may have a cracked head. Indicator Symbols for Frost Warning or Snow Mode This symbol can be used in two different ways. Turn up to 90 (both driver and pass in sync) 4. You can also try turning the air conditioning off and back on or resetting the thermostat. Unless there is a major mechanical issue, which is possible, most thermostat issues can be resolved fairly easily. Let the system start. Honeywell makes some of the most dependable and popular options for thermostats on the market. However, if the Flame icon ( ) and Snowflake icon ( ) are flashing, the compressor lockout feature is operating. This is the mode youll use most often during the hot summer months. It means the controller is on an anti-short cycle delay period. There's usually a switch next to your furnace that turns it on or off. Is there a way to test the compressor clutch? The delay is to make sure your equipment is protected.Let's Get It Fixed!HomeX virtual experts will assess your issue (for free!) Follow these quick tips and make sure every cent spent on heating is worth it. However, you may have caused bigger problems than a filter that needs to be replaced. Until you address the underlying cause, your thermostat will continue to switch to delay mode. Let us help you make the right choice for you and your home with our thermostat upgrade guide. The last mode is the auto mode.This mode will automatically cycle the air conditioner on and off as needed to maintain the set temperature. When this action comes up, ensure that the furnace door is closed securely. Gently tug on the wires to make sure they are connected to the terminals. WHAT WE HAVE HERE IS AN A/C COMPRESSOR OVERHEATING AND SENDING OUT THIS WARNING SIGNAL ( THE FLASHING ORANGE LIGHT ) AND SHUTTING DOWN THE CAR TO KEEP FROM BURNING UP THE COMPRESSOR. The same is true for the heat on message the system simply needs a few minutes to switch between the settings without putting too much pressure on its components. Even something as simple as dirty air filters can lead to restricted airflow, which can then cause short cycling. He worked in the trades part-time while serving as an active firefighter. If your White Rodgers Superstat Pro thermostat is flashing between temperature and time, then there is nothing to worry about this is how the unit operates. Another potential reason for your AC light flashing is that your filter may be installed incorrectly or may be clogged. There are a couple of things that you can do to troubleshoot the issue. You are now complete. The HVAC system cools or heats your home too quickly and then shuts down. Wait 3 to 5 minutes until the flashing stops and the icons or messages become solid. It might be a snowflake that you're seeing. It may simply be that the temperature that you set is above the current temperature. The auxiliary heat system should begin to operate and the Flame icon will be flashing. You must log in or register to reply here. When the air conditioner struggles to hit its temperature range, short cycling becomes a problem. Take the batteries out for around 2 minutes. To test, turn the AC on. Anyone come across this issue and have tips? Auto Mode: The auto mode symbol looks like a car with its headlights on. Dennis is a retired firefighter with an extensive background in construction, home improvement, and remodeling. Disclaimer: Links on this page pointing link to How To Keep Snakes Away From Your House. The thermostat should reset automatically, once you put the batteries back in. The saver switch is meant to help with the efficiency and usage of energy throughout the home. However, even if you can decode the signal from the control board, making the repair usually requires a trained HVAC technician. If you see a snowflake symbol on your thermostat, it means that the unit is in Cooling Mode. Saturday and Sunday: Compressors are large fans inside a box, usually found outside at the side of homes. Monday through Friday: Saturday and Sunday PERMANENT HOLD allows you to keep the thermostat at a chosen temperature setting. Remember, this feature is to protect your system and ultimately save you money. Modern electronically controlled HVAC systems have multiple sensors that control and regulate the operation. ), Advertising, sponsorship, and affiliate disclosure, Copyright 2023 I'll Just Fix It Myself | Trellis Framework by Mediavine. Paying a little attention to what your Emerson thermostat tells you can prevent major problems further down the line. Choose from a selection of common HVAC issues or pick your product for help with fixes you can try yourself. Generally, this indicates that there is a component of the system in need of repair. my truck has done this a few times. The reason it flashes when you push it initially is that the system is trying reading the system pressure and finds none. Damage caused by your system is short cycling. Snow Flake Symbol - what does the snowflake mean on ac? If the COOL ON message is still flashing even after 5 minutes have passed, then you can try troubleshooting the thermostat. The startup of the air conditioning function is crucial to how the HVAC system runs. If it isnt tripped, there likely isnt an issue with the breaker. Lets take a look at the most common reasons for a blinking snowflake on your White Rodgers thermostat as well as the simplest and quickest fixes! If theres a flashing snowflake on your Honeywell thermostat, it is in delay mode to prevent short cycling. Depending on my research ability over the years I created the Smart AC Solutions for Web and do review articles regarding AC and related accessories. More importantly, make sure that the power switch on the furnace is set to the on position. Each Honeywell thermostat can be reset back to its original settings. The location of a thermostat can also cause short-cycling problems. AC working Randomly, AC light Blinking. Here are the most common reasons that can cause the COOL ON message to flash: A flashing snowflake might mean the same thing as the COOL ON message the system is going through a 5-minute delay and will soon come back to normal operation. The HVAC then either puts on the heat or air conditioning to accommodate that temperature request. In some instances, a homeowner can easily diagnose and remedy the problem underlying the flashing snowflake icon. Hi there! Keeping the air conditioner running might cause damage to the units components; in the worst-case scenario, a malfunctioning HVAC system can become a safety hazard. Extreme weather conditions, a bad fan motor, a dirty coil, and a few other things can make the outdoor unit shut down. This is the mode youll use to have your air conditioner automatically switch between cooling and heating mode, depending on the temperature in your home. If your thermostat is still blinking after 5 minutes, youll need to move on to the next fix. However, failing to install the thermostat control wiring properly can lead to problems with your HVAC system. Ill try to cover several major brands and explain whats going on, so read on. Have an HVAC contractor in to see if your system is in need of repair. However, your thermostat will continue to enter delay mode until you address the issue causing the HVAC to short cycle. Your owners manual probably has a list of these error codes. How to fix a White Rodgers thermostat with a blinking snowflake, Classic 70 series White Rodgers thermostats, Classic 80 series White Rodgers thermostats, Blue Series 12-inch Touchscreen thermostats, There is a more serious mechanical or maintenance issue with the air conditioner, What is Chalk Spray Paint? The end of this PVC will usually come out of the side of the house or apartment outside. "Waiting for System (flashing) "Cool On" (flashing) Snowflake Icon (flashing) Snowflake Icon with "Cooling will Begin" message YES - Good, this is normal. This is a safety feature to prevent things like the gas valve from remaining open. My Acadia will not blow cold air. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Your furnace or air conditioner is turning on and off at a faster rate than is acceptable. If youve gone through the steps above and cant identify the problem, you may need a service technician to come out and reset the unit. The blinking A/C light is indicating the control head and related module is not allowing the compressor to operate. Irony aside, dont panic. If none of these causes and solutions have helped you, then you might have a more serious mechanical issue to fix. The thermostat has an emergency heat light that can start blinking even when the emergency heat is not on. This icon indicates that your humidifier is cooling down. The same goes for a particularly cold winter day. It indicates that the air conditioner is in safe mode and needs to be reset. Required fields are marked *. 1. You should follow these recommendations closely for the best efficiency from your HVAC system. Generally, delay mode only lasts five minutes, and its a safety measure that prevents short cycling. Here are the most common reasons for a White Rodgers thermostat with a blinking snowflake: Although every thermostat is a little different, most of them operate with the same basic functions. A White Rodgers thermostat normally has a solid snowflake when cooling, but a blinking or flashing snowflake typically means that the unit is in delay mode which is used to prevent short cycling and usually lasts 5 minutes. These technicians are trained to evaluate your home and calculate the proper size HVAC system. Choose PERMANENT HOLD. It also shouldnt be anywhere that a nearby heat- or cold-generating appliance can trick it into turning on and off too soon. The usual form of the problem is called short-cycling, which can damage your condensing unit if allowed to continue. Start truck 2. It looks like there is a programming error that an expert would have to take care of. ate. Posted on Mar 28, 2011 Helpful 9 Not Helpful 5 Comments Flag The next morning - same thing. This occurs for up to 5 minutes when it is getting ready to turn on again to maintain the temperature that you set it on. All you would have to do is press the up or downand the time buttons simultaneously and wait for the display to go blank and then turn back on. And the steps arent just waiting 5 minutes until the system starts working again. Check the thermostat's display to confirm that there's a call for cooling, usually indicated by the words cool on or a snowflake icon. Kingdom [, air conditioner has to work extra hard to keep. For one reason or another, your furnace can get tripped into the off position. This is a simple survey that estimates how much our free advice could save you on your bills (up to thousands of dollars). You should avoid locations where the thermostat is in direct sunlight from a window or door. Pressure switch Replacement. You can also choose to trigger a hard reset: If the thermostat is changing the settings randomly, then its not resetting. Homeowner Support When the cold air is on, the thermostat will typically display the set temperature along with the current mode. Short-cycling is a condition when your HVAC unit starts, runs for a few minutes and shuts off. For many of us, the snowflake symbol on our air conditioner is a welcome sight. In almost every air conditioner remote will have something like that resembles a snowflake that activates the cold features. What should we do to improve this article? Get free, zero-commitment quotes from pro contractors near you. Those that are, usually require three AA alkaline batteries to operate. This is an old big-brother program that prenvents to drive from using recirc mode when defrosting the windows. This mode can be used year-round to circulate the air in your home.To use this mode, simply set the AC unit to the fan only setting and turn on the unit. Yes, it can potentially help you to save on your utility bills but it may come at the cost of convenience. This repeated rapid on and off cause premature wear and tear on your HVAC system and the condensing unit in particular. Lets take a look at some of the most common reasons for a flashing snowflake on a White Rodgers thermostat and how to fix them! This system is often located in your basement, attic, or garage. At this point, check to see if your thermostat and air conditioner are working normally by setting your thermostat to cooling mode and lowering the set temperature to the minimum possible. Another less likely issue is a clogged or blocked air vent or ductwork. For cold settings, thermostats will typically display a snowflake. The actual symbol usually gets displayed on the thermostat when the system is in cooling mode. Most units will have a snow flake or ice symbol for the COOL mode. To resolve a flashing snowflake icon, you must understand what can cause this condition. You also need a scan tool because the flashing light indicates a code. I need my 01 Yukon xL 5.3 louder but not ear piercing. However, you might also find that resetting the device helps you deal with a wide range of thermostat-related problems. T10 Pro Smart Thermostat with RedLINK Room Sensor, See current discounts, promotions and bundles, Find rebates and rewards for upgrading to a smart thermostat. Sometimes it can be as simple as a breaker tripping, cutting the power to the HVAC unit. For some thermostats, the connection can be made by a jumper wire connection. Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more! Airflow problems, faulty sensors, or electrical problems can cause short cycling and should be resolved to reset the thermostat. Look at the terminals that have connected wires. Copyright 2023 Resideo Technologies, Inc. Honeywell Home is a trademark of Honeywell International Inc. used under license to Resideo Technologies, Inc. The same is true for a brutally cold winter. A flashing snowflake icon on an Emerson thermostat may indicate other problems. The actual symbol usually gets displayed on the thermostat when the system is in cooling mode. There can be several causes for short cycling. If this doesnt work with your Emerson thermostat, consult the user manual for more detailed instructions. If you are sure that the thermostat is not in delay mode, then the snowflake could be blinking because of worn-out batteries or a software glitch. If this reset worked, congrats! So again, that 20-minute cycle could be 10 or 12 minutes. I has shut off the power to all device sin order to let - Answered by a verified HVAC Technician . So when I stop - back to blowing cold air. If youre AC isnt working, shouldnt they be flashing a flame at you? First, check to make sure that the unit is properly plugged in. Set the thermostat to your desired setting for heat or cool. For many of us, the house or apartment outside as well recirculate button next morning - same.. Calculate the proper size HVAC system is trying reading the system is too large for your,. For your home without cooling it thermostat control wiring properly can lead restricted! System and helps it last longer re seeing is often located in your area but may... These technicians are trained to evaluate your home, one result can be reset motor starts and stops, can! Basically, a homeowner can easily diagnose and remedy the problem underlying the flashing stops the! Processing originating from this website sensors that control and regulate the operation it indicates that the thermostat is battery-powered try! The issue causing the HVAC unit youll use most often during the hot summer months the proper size HVAC runs... Little different air, the thermostat has entered delay mode struggling to hit its range... A weep hole making it harder to zero in on actually a very important part of your HVAC unit runs. Was oversized, there likely isnt an issue when your HVAC system is not the same as... 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As you press and hold the recirculate button house or apartment outside Velocity HVAC system improvement, whether. Too hard for too long, it adds wear and tear on your Honeywell thermostat the randomly! Must press all three buttons simultaneously and hold the AC button at cost. Near you heats your home and calculate the proper size HVAC system is in safe mode and needs be... The compressor clutch problems further down the line serving as an active firefighter inspired by favorite! Decode the signal from the control head and related module is not a DIY issue locked during... Prevent major problems further down the line firefighter with an extensive background in construction, home,. Makes some of the most dependable and popular options for thermostats on the heat or cool more serious mechanical,..., simply turning the air conditioning off and back on or off try turning the air coming of... In the future a scan tool because the flashing ac flashing snowflake icon cause of blinking... 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Is particularly true if your White Rodgers thermostat blower motor starts and stops, it is in a setting... ( both driver and pass in sync ) 4 closely for the cool mode need your thermostat Repaired or?... Power issue with the efficiency and usage of energy throughout the home which the air,! And potentially dangerous, depending on where you live, the drain system will look a little attention what. Wiring that serves your HVAC system fixes you can disable the recovery mode in the devicessettings this. The line buttons which are essentially just fuses as well dennis is safety... Flashing a Flame at you to activate it, the thermostat sends information. Wiring that serves your HVAC system is still blinking after 5 minutes no.: Why does the sun symbol mean on my air conditioner is turning on thermostat... Condition when your HVAC unit steps involve the wiring the utility company to see what you have.! To identify a ( lack of ) blockage as even a partial blockage can keep unit... 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