Cool blinking on thermostat

To reset the reminder: 600 Family Models - hold the Program and Time button down for 3 seconds. 700 Family Models will have a column of buttons on the left side of your thermostat – hold the second button from the top down for 3 seconds. 801 Model will have 2 buttons behind the door – hold down the one on the left (Fan Button) for 3 seconds.

2. The thermostat may be in the AUTO mode. Look for "AUTO" on the LCD display. If the Heat and Cool program temperatures are close, then the thermostat requires a larger room temperature change before changing from Heat or Cool. 3. There may be as much as a 4 minute delay before the Heat or Cool sys- tem turns On - wait and check.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 outl...White Rodgers thermostat troubleshooting; blinking snowflake. If the snowflake icon is flashing on the thermostat’s screen, the thermostat is in delay mode. The thermostat’s lockout feature is running to prevent the compressor from cycling too quickly. The blinking snowflake means the thermostat is on cool, but it is not cooling.A blinking snowflake on a White Rodgers thermostat typically means that the thermostat is in the “cool” mode and the ‘delay mode’ feature is active. This feature is designed to protect the compressor from starting too frequently, which can cause damage and reduce its lifespan. Under normal circumstance, delay mode doesn’t take more ...Honeywell Thermostat cool on blinking will be fixed by 1.Lowering thermostat setting,.2.check if the clock set or is the thermostat in...If the high limit switch is open due to overheating, it can cause the your Honeywell thermostat to flash “Heat On”. Troubleshooting will typically involve checking the high limit switch to ensure it is not tripped or stuck in the open position. If it is, allow the furnace to cool down and then reset the switch.November 19, 2022. When you see the “Cool on” light on your Honeywell thermostat blinks you perhaps don’t know whether it is “normal” or not. Probably you are used to seeing it blinking from time to time but now it is flashing continuously. As this flashing is now going on for a few hours, or even a few days, you start to wonder when ...Why is my Honeywell Thermostat Blinking Cool On? Five-Minute Compressor Delay. Low Thermostat Batteries. Power Outage. AC Unit Malfunction. Incorrect Thermostat Settings. Loose Wire Connections. Switching Modes. Faulty Thermostat Wiring. Blown Fuse. Low Refrigerant. How to Fix Honeywell Thermostat Cool On Blinking Light. 1.

Step 2: Bring down the temperature to the lowest degree. Next, you must determine if your unit is cooling any air at all or not. Here is what you need to do to check this: Ensure that the setting is set to “Cool”. Ensure that the fan setting is set to “Auto”. Set your thermostat’s temperature to the minimum degree.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 heatin...Installed ecobee 3 lite thermostat, simple, so I thought. labeled the wires and matched them to the book per the specs: R now went to RC. G to G, Y to Y, C to C, and O/B to O/B. But the system won't c …Check that all vents in your home are open and unobstructed. Move any objects that may be blocking the vents, such as furniture or curtains. After cleaning or replacing the filters and ensuring vents are open, turn your thermostat back on and set it to “cool.”. Wait a few moments to see if the air begins blowing.A thermostat can flash “cool on” without blowing air due to electrical surges and dying batteries. A “cool on” message can also appear if the thermostat logs out or times out on its own. Wait 5 minutes, restart your thermostat, and identify and replace fuse or wire damage to make it return to normal. Thermostats can also flash a “cool ...A blinking snowflake on a White Rodgers thermostat typically means that the thermostat is in the “cool” mode and the ‘delay mode’ feature is active. This feature is designed to protect the compressor from starting too frequently, which can cause damage and reduce its lifespan. Under normal circumstance, delay mode doesn’t take more ...In summary, when faced with the Honeywell Pro Series Cool On Blinking issue, it is essential to check the power source, perform a thermostat reset, and adjust the fan settings. By following these possible , you can troubleshoot and resolve the blinking light problem, restoring the proper functionality of your Honeywell Pro Series thermostat.If you’re looking to enhance the security of your home or office, setting up a Blink security system is a great choice. Blink offers affordable and easy-to-use security solutions t...

There’s a lot to be optimistic about in the Services sector as 2 analysts just weighed in on Vertex Energy (VTNR – Research Report) and Bl... There’s a lot to be optimistic a...In such cases, a simple Trane Thermostat Wi-Fi reset is all you need to get the system up and running. 1. Turn off the power to the HVAC system. Wait for about one minute. To ensure a successful reset, you can make use of a heat pump (if you have it). Use that to shelve the system for a few minutes.Why does my thermostat blink “Cool On”? Seeing the “Cool On” message blinking on your thermostat is not a cause for concern. It simply means that there is a time delay before the compressor starts, allowing for optimal cooling efficiency. Once the delay is complete, the compressor will kick in, and your home will be comfortably cool.Carrier thermostat cool on blinking message is, in fact, a helpful one. Whenever Your System Experiences A Delay Mode, The Thermostat Will Start Blinking The “cool On” Message. This Blinking Is Vital Because It Prevents Your Thermostat From Experiencing Short Cycling. The Duration Of This Blinking Message Would Be 5 …

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Amazon held an event this morning, and wow-oh-wow did they announce a lot. Smart thermostats! Flying security cameras! Robot companions! Didn’t tune in or have time to catch it all...In summary, when faced with the Honeywell Pro Series Cool On Blinking issue, it is essential to check the power source, perform a thermostat reset, and adjust the fan settings. By following these possible , you can troubleshoot and resolve the blinking light problem, restoring the proper functionality of your Honeywell Pro Series thermostat.In today’s fast-paced world, home security has become a top priority for many homeowners. With advancements in technology, there are now various options available to ensure the saf...The reason why Honeywell thermostat blinking cool on is maybe the thermostat devices taking delay time to prevent the AC from short cycling. However, the cool on flashing may indicate that the AC is pumping cool …A thermostat blinking “cool on” can be caused by various factors, such as electrical surges, dying batteries, or incorrect settings. It is essential to identify the root cause of the issue to resolve it effectively. Firstly, ensure that the thermostat is in “cool mode” and has the air vent set to “auto mode.” If the issue persists ...

Troubleshooting steps involve checking voltage, cleaning the thermostat and disk blade, and cleaning the drain line. For resetting the thermostat, you can select ‘mode’ and then ‘off’, flip the circuit breaker off and then on, and switch the mode to ‘auto’, ‘fan’, ‘cool’, or ‘heat’. When it comes to HVAC systems, it’s ... When the “Cool On” or “Heat On” indicator continues to flash for more than five minutes without hot/cold air coming in, it can indicate an issue with the HVAC system. If so, I recommend following the troubleshooting steps laid out below. 1. Wait 5-10 minutes.In this article, we will explore the possible reasons behind a blinking thermostat and provide you with some solutions to fix it. Understanding Thermostat Blinking. Thermostats typically blink the selected mode word (Heat, Cool) during a programmed wait time. This feature is built into the thermostat’s program and is usually adjustable.Nov 6, 2023 · Step 1: Identify the Issue. The first step in fixing a flashing snowflake on your thermostat is determining the cause. This will help you address the specific problem effectively. Common causes include low battery power, incorrect thermostat settings, sensor or wiring issues, or a system malfunction. November 19, 2022. When you see the “Cool on” light on your Honeywell thermostat blinks you perhaps don’t know whether it is “normal” or not. Probably you are used to seeing it blinking from time to time but now it is flashing continuously. As this flashing is now going on for a few hours, or even a few days, you start to wonder when ...Theres a lot to be optimistic about in the Services sector as 3 analysts just weighed in on Vertex Energy (VTNR – Research Report), Blink Charging... According to TipRanks.com, Day...If your thermostat is blinking heat on, the device might be in a 5-minutes delay state. Moreover, the thermostat might blink when there is a power loss or low battery. Besides, when the temperature of your AC reaches the set point, the thermostat might blink “Cool on”.Why is my Honeywell Thermostat Blinking Cool On? Five-Minute Compressor Delay. Low Thermostat Batteries. Power Outage. AC Unit Malfunction. Incorrect Thermostat Settings. Loose Wire Connections. Switching Modes. Faulty Thermostat Wiring. Blown Fuse. Low Refrigerant. How to Fix Honeywell Thermostat Cool On Blinking Light. 1.If you have a heat pump, set it to “heat” rather than “cool” or “automatic.” If the system has not been switched off, proceed to step 3. Step 3 – Check the thermostat settings. Two important settings on your thermostat can prohibit the thermostat to turn on the heat if any one of them is set incorrectly. Temperature settingsWhen your thermostat says “cool on” but there’s no air, it could be due to issues with your HVAC system like a tripped circuit breaker, a clogged filter, or a refrigerant leak. First, check your thermostat settings, ensuring it’s in “cool mode” and set to the correct temperature. If the settings are right, try resetting your ...The ‘Cool On’ blinking or flashing on your thermostat safeguards your HVAC system. This indicator activates a five-minute delay to protect the outdoor compressor from damage caused by turning on and off too quickly. This delay feature, especially common in Honeywell thermostats, prevents the compressor from short cycling, which can lead to ...

The display is flashing the word HEAT or COOL. Most newer Braeburn thermostat models will flash the word HEAT or COOL when the thermostat is calling for your heating or cooling system to run. When the call for heating or cooling is over, the word HEAT or COOL will become solid.

Crank thermostat down to the lowest temperature. The first step is to determine if your system is cooling at all and if it can control it. To check this, turn down your thermostat to its coldest setting. After setting it to the minimum temp, double-check the mode is set to ‘Cool.’. Also, make sure the fan setting is set to ‘Auto.’.If you have a heat pump, set it to “heat” rather than “cool” or “automatic.” If the system has not been switched off, proceed to step 3. Step 3 – Check the thermostat settings. Two important settings on your thermostat can prohibit the thermostat to turn on the heat if any one of them is set incorrectly. Temperature settingsFirst, verify that your thermostat is set properly. You can ensure that the system switch (which is found at the bottom right, behind the button panel door in most Lux thermostat models) is set to “heat” rather than at “cool” or “off”. Next, confirm that the fan switch (just to the left of the system switch in most models) is set to ...Feb 11, 2023 · 3. Cooling system requires service or thermostat requires replacement. Same procedure as diagnostic for No Heat condition except set the thermostat to COOL and lower the setpoint below the room temperature. There may be up to a five minute delay before the thermostat clicks in Cooling. Heat, Cool or Fan Runs Constantly. 1. Possible short in wiring. Also, I took the downstairs (working) thermostat upstairs and plugged it in and it seems to be working. I took the upstairs (not working) thermostat downstairs and plugged it and still get the flashing COOL signal. I want to check your suggested fix and try to 100% confirm it is the thermostat.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 heatin...3. The display is stuck- if this happens, the usual source for the problem is a mistake in the configuring process. When you see the display is stuck, you have to reset the thermostat. To do that, you just need to remove the power supply, wait a few minutes and then reconnect the power and re-configure the device.Why Is Honeywell Ac Blinking Cool On? The Honeywell AC blinks cool on because it indicates that the cooling mode is activated. Why Is My Thermostat Blinking Cool And On? The thermostat blinks cool and on because there may be a problem with the cooling system. Conclusion. To sum up, if you find your Honeywell thermostat blinking “Cool On ...In today’s fast-paced world, ensuring the safety and security of our homes is of utmost importance. With the advancements in technology, home security has become more accessible an...Override" and "cooling" is blinking on my thermostat but the air won't turn on. It is a rite temp thermostat and I'm - Answered by a verified HVAC Technician We use cookies to give you the best possible experience on our website.

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The display is flashing the word HEAT or COOL. Most newer Braeburn thermostat models will flash the word HEAT or COOL when the thermostat is calling for your heating or cooling system to run. When the call for heating or cooling is over, the word HEAT or COOL will become solid. In this video, we will walk you through troubleshooting a Honeywell thermostat with a blinking "Cool On" message. If you're having issues with your thermosta... If your thermostat is connected to WiFi (displays green bars), but is disconnected from the Trane Home account, please follow the instructions. Ensure thermostat is on a secure WiFi network. Turn WiFi off by pressing Menu→Settings→Network→Wireless, then “ON/OFF”. Leave WiFi off for at least 30 seconds.The thermostat in your home is a small but mighty system. Whether you own a furnace, air conditioner, heat pump, or any other kind of HVAC system, the thermostat is responsible for relaying messages to it so that it can properly heat or cool your home. That’s why, if your thermostat is not working, it can be a pretty big deal.Sep 19, 2023 · When COOL ON blinks, it usually indicates a cooling system delay. But when it flashes for over 5 minutes, the primary reasons are power outage, sensor issues, wrong thermostat settings, low batteries, dirty filters and coils, wire problems, and wrong mode selections. Here are the main reasons why your Honeywell thermostat is blinking “Cool On”: A power outage: A power outage or some other interruption associated with a power source can trigger the thermostat’s compressor to restart and activate the ‘Cool On’ icon to blink. Chaining the Set Temperature: Readjusting the temperature manually after ...There are 11 blink codes built into a Panasonic television, as of 2015, all of which relay the fault diagnostic circuit’s detection of errors within the TV. The blink codes vary fr...Don’t panic if you see “Cool On” flashing on your thermostat! It could be a simple fix like checking settings or power supply. But if you hear strange noises or have power issues, it’s time to call in the pros. The “Cool On” message on your thermostat could signal various issues, from a malfunctioning thermostat to system-related ...Honeywell Thermostats: A blinking snowflake or the word “heat/cool” blinking on a Honeywell thermostat indicates Delay Mode. The system should resume operation after 5 minutes. Emerson Thermostats: Emerson’s thermostat enters lockout mode, preventing the compressor or heat element from cycling too quickly.If your thermostat is blinking “cool on” one of three things has taken place. Someone tried to restart the compressor before the refrigerant had time to settle. A sudden change from cool to heat, or heat to cool. Changing the batteries in your system may also cause this to happen. Honeywell thermostats are equipped with a second line of ...The ‘Cool On’ blinking or flashing on your thermostat safeguards your HVAC system. This indicator activates a five-minute delay to protect the outdoor compressor from damage caused by turning on and off too quickly. This delay feature, especially common in Honeywell thermostats, prevents the compressor from short cycling, which can lead to ...When Should I Seek Professional Help For The Blinking Cool On My Honeywell Thermostat? You should seek professional help for the blinking cool on your Honeywell thermostat if you have tried basic troubleshooting steps and the issue persists, or if you are unsure about the best course of action to take. ….

Jul 12, 2021 · Crank thermostat down to the lowest temperature. The first step is to determine if your system is cooling at all and if it can control it. To check this, turn down your thermostat to its coldest setting. After setting it to the minimum temp, double-check the mode is set to ‘Cool.’. Also, make sure the fan setting is set to ‘Auto.’. 1. Check Thermostat Settings. 2. Check Your Thermostat’s Battery. 3. Set Your Thermostat to The Lowest Temperature. 4. Check If Both the Outdoor and Indoor Units Have a Power Supply. 5. Clogged Air Filters Could Cause Honeywell Thermostat Blinking Cool On. 6. Dirty Coils Can Cause Honeywell Thermostat Flashing “Cool On” 7.Aug 28, 2023 · 1. Wait For 10 Minutes. Before you decide to fix the Honeywell thermostat cool-on flashing error, you must wait for about 5 to 10 minutes. As there is a good chance that your thermostat is going through a restart or running some checks. Or it might be facing a slight delay or using the compressor protection feature. To fix a blinking snowflake, start by checking the thermostat settings. Ensure that the temperature and mode are correctly set. If the snowflake icon keeps blinking, it may be due to the temperature being set too low or the thermostat being in cooling mode. Adjust the settings accordingly to see if this resolves the issue.1. Check Thermostat Settings. 2. Check Your Thermostat’s Battery. 3. Set Your Thermostat to The Lowest Temperature. 4. Check If Both the Outdoor and Indoor Units Have a Power Supply. 5. Clogged Air …When the cool light is blinking on your thermostat, it means that the unit is not receiving enough power to operate. This could be caused by a number of things, including a tripped circuit breaker or a faulty power cord. If you suspect that the problem is with the power supply, you should first check the circuit breaker and reset it if necessary.Don’t panic if you see “Cool On” flashing on your thermostat! It could be a simple fix like checking settings or power supply. But if you hear strange noises or have power issues, it’s time to call in the pros. The “Cool On” message on your thermostat could signal various issues, from a malfunctioning thermostat to system-related ...A blinking ‘Cool On’ thermostat might be resolved by performing a reset and reprogramming the thermostat. To do this, consult your thermostat’s manual for instructions on resetting and reprogramming. It may involve a simple restart or a complete factory reset, which would erase all previously programmed settings.Mar 7, 2024 · It is important to troubleshoot the thermostat and the cooling system to determine the exact cause of the blinking light. Remember to check the thermostat settings, power source, and HVAC unit to address the issue effectively. Cool blinking on thermostat, If you have a heat pump, set it to “heat” rather than “cool” or “automatic.” If the system has not been switched off, proceed to step 3. Step 3 – Check the thermostat settings. Two important settings on your thermostat can prohibit the thermostat to turn on the heat if any one of them is set incorrectly. Temperature settings, The fix. If your thermostat is flashing cool on, wait for 5 minutes until the delay is over. Usually the thermostat delay should not take more than 5 minutes. However, if your thermostat is not blowing cold air after the delay period, there could be issues causing this problem. Let’s go to the next step to find out more., Thermostat is calling for cooling. As stated earlier, when the Braeburn thermostat begins to flash or ‘ blink’ this is normal on newer models of Braeburn thermostats. This simply means that the thermostat is calling for cooling. Time off delay is activated. Another reason for the Braeburn thermostat cool flashing is the time off delay …, flashing. Cool mode: When the room temperature rises above the set point by the number of degrees of the differential, the cooling will turn on and the icon will display. The cool will run until the cool setting is reached, cooling will turn off and Cool icon flashing Temporary Time Delay Override: 1- Select system mode (HEAT or COOL) 2- Press ..., Here is a simple trick to test your thermostat: By simply bypassing the thermostat. To test cooling attach Y, R and G, you might have to wait for 5 minutes before the AC kicks in. To test heating attach the W, R, and G wires. If your thermostat is malfunctioning, consider getting a replacement. Emerson thermostat not working after …, If your thermostat is blinking heat on, the device might be in a 5-minutes delay state. Moreover, the thermostat might blink when there is a power loss or low battery. ... Honeywell thermostat is a multifunctional thermostat that helps heating, cooling, ventilation, and AC system. This thermostat shows the temperature state readings on …, The blinking of cool on or thermostat blinking cool on is essentially your thermostat’s way of communicating a specific status. In most cases, this blinking is a normal part of the thermostat’s operation, indicating that the cooling system is in a delay mode to prevent short cycling., Blink Charging, an electric vehicle charger manufacturer, will be deploying EV chargers at General Motors dealerships across the U.S. and Canada, according to the company. The star..., Turn off the Thermostat: Locate the thermostat’s power switch or circuit breaker in your electrical panel. Turn off the power to the thermostat. Wait for a Few Minutes: Leave it off for about five minutes to allow any residual power to dissipate.; Turn the Thermostat Back On: Restore power to the thermostat by flipping the switch or circuit breaker back on., Troubleshooting and Fixing a Honeywell Thermostat Cool On Flashing. Before taking any complex step to fix this problem or hiring a technician, try fixing it yourself. There are simple steps to try, and they usually work, especially if the thermostat is in good working order. Start from the simplest ones and move to more complex issues. 1., On a Honeywell thermostat, a message that says ‘temporary’ indicates that the device is on a temporary hold. During this period, the thermostat will keep the temperature in your house at a certain setting. Once the temporary hold expires, the device will get back to its normal schedule. You get to decide when the temporary hold should …, Wait a few minutes for cooling to start. If cooling does not start, you might want to restart your thermostat. 4. Your Thermostat Needs a Reset. After trying out the above tips and your thermostat won’t cool then try resetting your thermostat. To reset a sensi smart thermostat follow these steps: Pull off the face of your thermostat from the ..., After 5 minutes Cool should turn solid and ac come on.The flashing indicates we are in a time delay compressor protection mode. Ask Your Own HVAC Question Customer reply replied 4 years ago, Cause: No Cool. The thermostat cooling often blinks continuously as a sign for the cooling system to run. That means your thermostat’s cooling system is most probably turned off. But it can also happen if the blown fuse or the furnace power is turned OFF. Solution. So as you can tell, the only way to solve the problem is to make the cooling ..., To fix a blinking snowflake, start by checking the thermostat settings. Ensure that the temperature and mode are correctly set. If the snowflake icon keeps blinking, it may be due to the temperature being set too low or the thermostat being in cooling mode. Adjust the settings accordingly to see if this resolves the issue., When Should I Seek Professional Help For The Blinking Cool On My Honeywell Thermostat? You should seek professional help for the blinking cool on your Honeywell thermostat if you have tried basic troubleshooting steps and the issue persists, or if you are unsure about the best course of action to take., If the batteries are dying, your thermostat could be blinking the “Cool On” message. When your thermostat doesn’t have enough power, it won’t be able to start …, Check that all vents in your home are open and unobstructed. Move any objects that may be blocking the vents, such as furniture or curtains. After cleaning or replacing the filters and ensuring vents are open, turn your thermostat back on and set it to “cool.”. Wait a few moments to see if the air begins blowing., A blinking snowflake light means the thermostat is in the cooling cycle but on standby since the required temperature has been reached. This is a protective measure for the system not to overworking itself and damage the compressor, fan or other critical cooling system parts., The “cool on” blinking indicator on a Honeywell thermostat is primarily a sign that the thermostat is in a delay mode. It is designed to protect your HVAC system by …, Honeywell thermostat cool on blinking is a very common issue for Honeywell users. If you do not know the proper troubleshooting methods, you can get tensed over something very normal, and you might even want to go for a Honeywell replacement. But there is no need for that as we wrote this troubleshooting guide hoping …, An improperly installed thermostat can result in various issues, including a blinking cool indicator without the cooling system functioning. Troubleshooting Steps. When your Honeywell thermostat is blinking cool on but not working, it can be frustrating. However, you can take several troubleshooting steps to try and resolve the issue., In this article, we will explore the possible reasons behind a blinking thermostat and provide you with some solutions to fix it. Understanding Thermostat Blinking. Thermostats typically blink the selected mode word (Heat, Cool) during a programmed wait time. This feature is built into the thermostat’s program and is usually adjustable., Aug 28, 2023 · 1. Wait For 10 Minutes. Before you decide to fix the Honeywell thermostat cool-on flashing error, you must wait for about 5 to 10 minutes. As there is a good chance that your thermostat is going through a restart or running some checks. Or it might be facing a slight delay or using the compressor protection feature. , Jun 1, 2022 · 3. The display is stuck- if this happens, the usual source for the problem is a mistake in the configuring process. When you see the display is stuck, you have to reset the thermostat. To do that, you just need to remove the power supply, wait a few minutes and then reconnect the power and re-configure the device. , There’s a lot to be optimistic about in the Services sector as 2 analysts just weighed in on Vertex Energy (VTNR – Research Report) and Bl... There’s a lot to be optimistic a..., Conclusion – Honeywell Thermostat Cool On Blinking. In most cases, a blinking “Cool On” indicator on a Honeywell thermostat simply means that there is a delay, and the system will start working normally after about 5-10 minutes. If the problem persists, try bypassing the thermostat or troubleshooting the system further. , Aug 29, 2022 · Why is my thermostat display showing “wait,” “waiting for equipment,” or flashing “cool on”? Each thermostat model has a different display message when a delay occurs. This delay can be up to five minutes under normal operating conditions. , There are 11 blink codes built into a Panasonic television, as of 2015, all of which relay the fault diagnostic circuit’s detection of errors within the TV. The blink codes vary fr..., Feb 11, 2023 · 3. Cooling system requires service or thermostat requires replacement. Same procedure as diagnostic for No Heat condition except set the thermostat to COOL and lower the setpoint below the room temperature. There may be up to a five minute delay before the thermostat clicks in Cooling. Heat, Cool or Fan Runs Constantly. 1. Possible short in wiring. , Check the circuit breaker to your equipment. Confirm the thermostat is set to Cool mode and the setpoint (the smaller number at the top of the thermostat display), is set to a temperature lower than the display temp (the larger number in the center of the display). Confirm the message "Cool On" is solid (not flashing) on the thermostat display., Here is a simple trick to test your thermostat: By simply bypassing the thermostat. To test cooling attach Y, R and G, you might have to wait for 5 minutes before the AC kicks in. To test heating attach the W, R, and G wires. If your thermostat is malfunctioning, consider getting a replacement. Emerson thermostat not working after …, Feb 22, 2022 · Why is the "Cool On," "Heat On," "Snowflake," or "Flame" blinking on the thermostat display? Last updated. 2/22/22. The thermostat has a built-in 5 minute delay to protect your equipment. If “wait” is in the screen or “cool on” is flashing – wait 5 minutes for the system to safely respond.