Cool on flashing on honeywell thermostat

If this is the case, the furnace won't start working even though the thermostat shows on. See what temperature the thermostat is set to check if the problem is in the described situation. 2. Clogged Filters And Fan Blades. The next problem HVAC systems owners often encounter when the Honeywell thermostat says heat on but the heat is not ...

Just purchased a honeywell rth6350/rth6450 thermostat to replace my old one. The wiring on the old one was as follows: R - red G - green Y - yellow W2- white X - black (1) E - black (2) O - blue orang …Aug 8, 2023 · If the flashing light on your Honeywell thermostat has been on for more than 5 minutes and there is no cooling,. In such a case, resetting the thermostat may resolve the problem. In this blog, we are going to outline the many measures you may take to address the difficulties with ‘Cool On’ on your Honeywell thermostat. Also, we will talk ...Ensure Everything Is on Power. If you notice your Honeywell thermostat not working, you may want to check your whole system. Check whether it is using power or not. This includes making sure the thermostat, air handler, and the outdoor unit are all running on power. This way, you may be able to narrow down the issue.Honeywell Thermostat Flashing "Cool On" Basics. A Honeywell thermostat is a user-friendly device designed to control and regulates indoor temperature settings in homes and businesses. It helps maintain comfortable and energy-efficient environments by allowing users to customize heating and cooling systems.Low Batteries. A blinking “Cool On” message can appear due to dying batteries, a power surge, or a power outage. Thermostat batteries last for an average of 10 months, so it is easy to tell when dead batteries are the culprit. Sometimes, a Honeywell thermostat can bounce back after a power outage without requiring a reset.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...

Oct 25, 2023 · Honeywell TH8321WF1001 Troubleshooting involves diagnosing and resolving any issues with the thermostat. ... The Honeywell TH8321WF1001 thermostat is a versatile device that allows you to control your HVAC system efficiently. ... Double-check the thermostat settings to ensure that the mode (cool, heat, or auto) and the desired …Installing your thermostat 9e Select your system type and touch Next. The system type determines other selections for completing initial setup. Use the checklist from Step 6A-d when making selections. 9f Touch Next after making selections on each screen. Next 9g Touch Done on the last screen.Sep 13, 2023 · If your Honeywell thermostat isn’t turning on the heat, it could be caused by a few different issues. The most common is a lack of power, which could be due to a tripped circuit breaker or blown fuse. Additionally, you may need to check that the fan switch is in the “On” position and that both batteries are fresh and inserted properly.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 a honeywell thermostat says waiting for equipment, it is an indication that the thermostat is in delay mode. Delay mode is a built-in feature on a HVAC system that works with your thermostat to prevent your compressor from starting too soon after a shut off, thereby preventing your HVAC equipment from damage. ... "Cool On" (flashing)Having a malfunctioning thermostat can disrupt the comfort and efficiency of your home’s heating and cooling system. When your Honeywell thermostat displays the “cool on” indicator but fails to regulate the temperature, it could indicate a range of issues, including sensor problems, wiring issues, or a faulty compressor.Step 1: Check your Honeywell thermostat’s mode. In some cases, your thermostat can switch to the “Setup Mode”, especially if there has been a recent power cut in your area. Check the settings to make sure your thermostat is in the correct mode. Moreover, you should also ensure that the correct time is set on the device.

PRO 1000 HORIZONTAL NON-PROGRAMMABLE THERMOSTAT Manual & Support. TH1210DH1001/U, TH1110DH1003/U, TH1100DH1004/U. Download Manual Download Installation Guide. Download Service Datasheet. PRO 1000 HORIZONTAL NON-PROGRAMMABLE THERMOSTAT Product Page.Also Check: Honeywell Hot Water Heater Status Light Blinking. So Why Does the Honeywell Thermostat Show "Heat On" Blinking? Honeywell thermostats have a blinking "Heat On" indicator for two main reasons: 1. Normal Delay Mode. When the "Heat On" light blinks on a Honeywell thermostat, this generally signals the thermostat is in a ...Thermostats. Take control of your home comfort and save on energy costs with a range of Honeywell Home thermostats. From smart WiFi thermostats with room sensors and humidification control, to programmable and non-programmable thermostats, Honeywell Home products meet a variety of needs. ProSeries ... Braukmann HCC100 T6 smart thermostat DT4 ...A Honeywell thermostat not working after battery change could be caused by misplaced batteries, programming that has been reset or a faulty thermostat. Fixing this problem may include checking if batteries were placed according to their respective terminals or reprogramming your thermostat. In the following chart lets take a quick look at what ...If your thermostat is blinking, there is likely a problem with the battery. The blinking is used as an alert that it's time to replace it before the battery dies. If it continues to blink after you've changed out the battery, there may be a bigger problem with your thermostat. Another reason your thermostat may be blinking is that you have a ...

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This is the quickest and easiest method. Simply follow the steps outlined below to reconfigure the thermostat to match your existing system. Step 1. Touch the menu icon (can be 3 horizontal lines at bottom of display) Step 2. Scroll down and touch "Advanced setup". Step 3. Then touch "modify configuration". Step 4.Sep 15, 2023 · Steps To Troubleshoot Issues With ‘Cool On’: Honeywell Thermostat. The ‘Cool On’ indicator flashing on your Honeywell thermostat should normally resolve itself within 5 minutes. However, if that does not happen, you can use the steps below to troubleshoot the issue and resolve the problem. Set Thermostat To Lowest Temperature SettingStage 1 Thermostat Meaning. Single-stage systems use one heating and cooling output level. As such, they use single-stage thermostats. It uses two-thirds of the compressor capacity while stage two uses the full compressor. But that description of the differences between stage 1 and stage 2 thermostats won’t help you unless you know what ...II. Cool On Blinking on Honeywell AC Thermostat A. Overview of the Cool On Blinking issue. The cool on blinking issue on a Honeywell AC thermostat is one of the most common problems reported by users. When the cool on indicator light blinks, it indicates that there is an issue with the cooling system or thermostat that needs attention.To factory reset this thermostat, first press the System button. Now you must press and hold the blank box that's in the center of the screen. When the number panel is displayed, set the number on the left to 0710 and the number on the right to one. Once this is done, press the Done button.

Jan 12, 2023 · 7 Steps to Troubleshoot a Honeywell Thermostat Flashing “Cool On” Message. 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.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. If you have ever faced a problem and are searching for solutions, this is the ...Price: $32.95 $46.95. You Save: $14.00 (29% Off) Add to Cart. Standard heat/cool manual thermostat. Precise temperature control for both heat and cooling systems. Mercury free thermostat. 4 wire setup. Can be used with central oil heating, electric furnaces & central electric cooling. Use in single transformer systems only.TH2110DV: For 1 Heat/1 Cool systems. TH2210DV: For 2 Heat/1 Cool heat pump systems only. (Pull thermostat from wallplate and turn over to find model number.) CAUTION: EQUIPMENT DAMAGE HAZARD. To prevent possible compressor damage, do not operate cooling system when outdoor temperature is below 50°F (10°C).Turn off your Honeywell Thermostat switch. Open the battery slot by pressing the door down and sliding it out. If this doesn't work, try inserting a coin or some similar object in the slot. Once you have opened the battery slot, slide the batteries out. Re-insert the batteries, but put them in a reversed position.When your Honeywell thermostat's 'Cool On' indicator blinks, it's not a cause for panic. This blinking signifies a delay designed to protect your heating and cooling equipment from short cycling, a phenomenon that can cause damage.Reason 3: Bad Wiring. If the batteries are replaced and the thermostat is still not turning on the AC, there's a high chance that it has some wiring issues. If that's the case, you will notice some strange behavior from your AC, apart from being unresponsive. The AC won't maintain the temperature set in the thermostat.Find the circuit breaker that controls it, and flip it off. Remove the cover: Take off the cover of your Honeywell thermostat. Most models have a cover that snaps off easily. Just pull it gently towards you. Find the battery compartment: Once the cover is off, you'll see where the batteries go.Honeywell 6000 Series: If your thermostat falls under the Honeywell 6000 Series category, make sure the thermostat is turned on. Then, press and hold the "Fan" button as well as the "Up" arrow. Hold these for about five seconds, then release them. Press the button on the bottom left until you see "39" on the display.Smart Response Learning. The T6 Pro 7-Day Programmable Thermostat learns your heating and cooling cycle times to deliver the right temperature when you want it. With precise temperature control, the thermostat can automatically change from heating to cooling to help maintain the temperature you like most. Intuitive Design.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.

Tighten Wiring Connections. Inspect wiring terminals on the thermostat and AC control board for looseness. Tighten all loose connections. 13. Cycle AC Unit Power. Turn off the power to the AC unit for 30 seconds, then turn it back on to reset the system and see if the "cool on" flashing light stops. 14.

Heat On / Cool On flashing on the screen: Compressor protection feature is engaged. Wait 5 minutes for the system to restart safely, without damage to the compressor. ... Honeywell T10 PRO Smart Thermostat Installation Guide (article) Honeywell FocusPRO 5000 Series Manual (article) Honeywell Lyric T6 Pro Wi-Fi Programmable Thermostat ManualSometimes, all you would have to do to get rid of the blinking ‘cool on’ message is reset the thermostat. If your thermostat has batteries, then insert those backward for 5 seconds to reset the device. To reboot other Honeywell Pro Series thermostats, you would have to: Turn the device on. Press and hold the ‘menu’ button for 5 seconds.Step 3: Reset the Thermostat. If the thermostat is still not turning on, perform a factory reset. This can resolve any software issues that may be causing the problem. Note: Performing a factory reset will erase all settings and restore the thermostat to its default state.Check the filter: A dirty or clogged filter could cause the red light to appear. Make sure to clean or replace the filter if necessary. Check the wiring: Make sure that all the wiring connections are properly connected and that there are no loose wires or damaged wires. Check the sensors: The sensors on your Honeywell HZ311 thermostat may need ...La boîte comprend : Thermostat T4 Pro. Système de montage UWPTM. Adaptateur d'installation standard Honeywell (adaptateur boîtier de raccordement) Plaque de couvercle décorative Honeywell - Petite; dimension 4-49/64 po x 4-49/64 po x 11/32 po (121 mm x 121 mm x 9 mm) Vis et chevilles. 2 piles AA.Related Article: Honeywell Thermostat Cool on Blinking. Rate this post. Adrian Simmons (Licensed Appliance Repair Expert ) Adrian is an ISCET licensed professional that has completed the National Appliance Service Technician Certification Exam and has the expertise to diagnose and repair any appliance. He is well-versed in the latest ...Confirm the message "Heat On" is solid (not flashing) on the thermostat display. Confirm your wiring is correct, and the wires have good contact in the terminals (tug gently on the wires) Check your jumper wire. To operate heating, the thermostat requires power to the R terminal. (If you have a wire in the RC terminal and no wire in the R ...Enter your Thermostat location. Then enter the Device MAC id and CR code. On successful registration of your thermostat device on the Total Connect Comfort registration page, a success message will pop up. You can also refer to the registration details on the Thermostat display screen under the Wi-Fi setup page.

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Nov 12, 2019 · Honeywell thermostat says "cool on" blinking or "heat on" flashing, but not working after changing batteries. Thermostat blinks Cool On or Heat On is a safet...Honeywell Th1110D2009 Troubleshooting. 1. Check the power source to make sure it is connected and working properly. 2. Make sure all connections are secure, including any wiring that connects the thermostat to your HVAC unit or other components of your home heating/cooling system. 3.If you use a touchscreen model, press the “Menu” button to access the settings. On settings, scroll through the menu to find the “Reset” or “Factory Reset” option. Once you find it, select it. Now, your thermostat should prompt you to input your password to confirm the reset. Input your correct password now.Temperature settings do not change. Make sure heating and cooling temperatures are set to acceptable ranges: Heat: 40° to 90°F (4.5° to 32°C). Cool: 50° to 99°F (10° to 37°C). "Cool On" or "Heat On" is flashing. Compressor protection feature is engaged. Wait 5 minutes for the system to restart safely, without damage to the ...Sep 26, 2023 · A critical aspect that can disrupt the smooth operation of your Honeywell thermostat equipment, leading to the “Honeywell thermostat blinking cool on” issue, is the condition of your indoor filter. Even if the rest of your thermostat system appears to be functioning correctly, a neglected indoor filter can wreak havoc on the entire setup.Read the operating manual on this page to properly set up the operation of the programmable thermostat (TH6110D1013, TH6110D1021 and TH6110D1005). This will allow you to understand the capabilities of the device. The document contains a 26 of pages in English with detailed descriptions and pictures of the Honeywell TH6110D FocusPro 6000 Series ...Lets start at the outdoor unit with thermostat calling for cool and after the 5 minute delay has finished and changed to solid "COOL". We will locate the wires in the outdoor unit coming from inside. Locate the one from R and Y and lets check between those 2 wires to see if we have 24 volts AC.This allows the thermostat to "learn" how long the heating and cooling system will take to reach the programmed temperature settings. So the temperature is reached at the time you set. For example: Set the Wake time to 6am, and the temperature to 70F. The heat will come on before 6am, so the temperature is 70F by the time you wake at 6am. The ...The "cool on" blinking indicator on a Honeywell thermostat is a sign that the thermostat is in a delay mode .This delay mode is designed to protect your HVAC (heating, ventilation, and air conditioning) system from short cycling, which is the rapid turning on and off of the system .. Here is the meaning and possible causes of the "cool on" blinking indicator:Sometimes, you might see the reading on the screen is blinking heat on. Generally, the Honeywell thermostat blinks for protection purposes. A blinking heat on signal indicates that a safety timer's tripping that will protect the compressor of your thermostat. Sometimes, it might indicate a low battery. ….

Easy Fixes for the “Cool On” Flashing Issue. Now that we have identified the potential causes, let’s explore seven easy fixes to resolve the “Cool On” flashing issue with your Honeywell thermostat: 1. Check Thermostat Settings: Ensure that the thermostat is set to the correct mode (cooling mode).Having a malfunctioning thermostat can disrupt the comfort and efficiency of your home’s heating and cooling system. When your Honeywell thermostat displays the “cool on” indicator but fails to regulate the temperature, it could indicate a range of issues, including sensor problems, wiring issues, or a faulty compressor.This allows the thermostat to "learn" how long the heating and cooling system will take to reach the programmed temperature settings. So the temperature is reached at the time you set. For example: Set the Wake time to 6am, and the temperature to 70F. The heat will come on before 6am, so the temperature is 70F by the time you wake at 6am. The ...Aug 8, 2023 · Fix Honeywell thermostat flashing cool on by turning it down to lowest temperature. Check the mode & the air filter, examine AC coils or reset your thermostatUsually, a Honeywell thermostat will enter Recovery mode when it needs to adjust from a mode that is energy-saving. When this happens, it will turn on your HVAC system before the time you scheduled a certain temperature, so it will get the chance to adjust gradually. For instance, if you set up your thermostat to offer you a temperature of 70 ...Fix 4: Update Firmware And Restart. To troubleshoot the Honeywell T5 thermostat, start by checking for firmware updates. Install the latest version if available. Next, turn off the power to the thermostat and then turn it back on to perform a restart. Give the thermostat some time to reset and reestablish its connection.1 About your new thermostat. 1.1 Features. 2 Quick reference to controls. 3 Quick reference to display screen. 4 Set the time and day. 5 Select the system setting. 6 Select the fan setting. 7 Save money by setting program schedules. 8 Energy saving settings for maximum cost savings.Four indicators are responsible for the functions (heat, cool, fan, and purge), and three — for the zones (zone 1, 2, and 3) in which the system operates. A green light indicates that the HVAC system is operating properly. However, if you see a solid or flashing red light on the Honeywell HZ311, there is a problem. In this article, we will ... Cool on flashing on honeywell thermostat, Sep 26, 2023 · A critical aspect that can disrupt the smooth operation of your Honeywell thermostat equipment, leading to the “Honeywell thermostat blinking cool on” issue, is the condition of your indoor filter. Even if the rest of your thermostat system appears to be functioning correctly, a neglected indoor filter can wreak havoc on the entire setup., Sep 19, 2023 · Verify Power Supply. To troubleshoot a Honeywell AC thermostat with a blinking cool on LED, start by verifying the power supply. Check the thermostat power source to ensure proper voltage supply. Inspect the power connections and make sure they are secure. If the wires are loose or damaged, tighten or replace them accordingly., Due to drained batteries, the heating or cooling feature of thermostats malfunctions. Go to your thermostat's display and see the battery level. Insert the batteries of the required voltage so that your thermostat performs well. Replacing the batteries can debug the Honeywell thermostat won't switch to cool. 4., As a business owner in Shreveport, LA, you know that investing in the right technology can make a huge difference in your bottom line. One of the most important investments you can..., Lets look at the jumpers on the rear of the thermostats circuit board. J7 needs to be set to GAS or ELEC based on your system type.8.5 GAS/ELECTRIC MODE J7 This setting changes how the system's blower fan (if applicable) is controlled while in HEAT mode, and with the Fan switch in the AUTO position., the message Cool On (or Heat On if you have a heat pump). When the safe wait time has elapsed, the message stops flashing and the compressor turns on. Built-in compressor protection Message flashes until safe restart time has elapsed. Adjusting keypad lockout 1 Press Menu on the thermostat. 2 Press or to go to LOCK. Press Select., Reasons a Honeywell thermostat keeps rebooting. Replace dead batteries, tighten loose wiring, or replace a failing transformer. Check installation and wiring, replace damaged wiring. Replace faulty high limit switch. Update the thermostat's software. Replace faulty sensor or relay., Step 3: Reset the Thermostat. If the thermostat is still not turning on, perform a factory reset. This can resolve any software issues that may be causing the problem. Note: Performing a factory reset will erase all settings and restore the thermostat to its default state., You have to have the installer program from Adobe before you can run the free install of Flash Player, according to What Is My Browser. To get this, open the Adobe website and sele..., Here is how to go about it. Press the "Menu" button on your thermostat. Press "Security Settings.". Select "Change Lock Mode" (This allows you to adjust your lock settings). Select the lock option you want to use. (Such as "Unlocked" for unrestricted access to thermostat settings, select "Partially Locked" to allow for ..., Jan 25, 2022 · Select your Home Wi-Fi network name and touch “CONNECT”. For hidden networks, touch the “OTHER” button to enter the network name/SSID manually. Enter the password for your Home Wi-Fi …, Okay, let's try this: first, turn the thermostat off, then remove the batteries from the thermostat and leave out until the display goes completely blank. Now, reinstall the batteries and turn the switch back to cool and lower the desired temp below the indoor temp. The 'cool on' may flash, but leave the thermostat alone for 5-10 minutes and ..., PRO 1000 HORIZONTAL NON-PROGRAMMABLE THERMOSTAT Manual & Support. TH1210DH1001/U, TH1110DH1003/U, TH1100DH1004/U. Download Manual Download Installation Guide. Download Service Datasheet. PRO 1000 HORIZONTAL NON-PROGRAMMABLE THERMOSTAT Product Page., But Honeywell thermostats are designed with state-of-the-art climate-control functions, so the average homeowner may not completely understand how everything works. Maybe when you go to adjust the temperature, you'll press a button by mistake and trigger an unfamiliar message or signal. Maybe you see the screen blinking even before you touch it., My Heat/Cool Thermostat operates the A/C only from demand heat position. This is an Old Miller/Nordyne (1994) Heating and Cooling system with a Split System Single Phase Oudoor A/C 230v that is installed in a Mobile Home of the same vintage. The heating section went inoperative last winter and I tried some troubleshooting with no luck, after ..., Low Batteries. A blinking “Cool On” message can appear due to dying batteries, a power surge, or a power outage. Thermostat batteries last for an average of 10 months, so it is easy to tell when dead batteries are the culprit. Sometimes, a Honeywell thermostat can bounce back after a power outage without requiring a reset., Turning off the Honeywell thermostat's permanent hold setting is easy. It is usually the same for turning off a temporary hold. Depending on your model, you can go ahead and press Run, Cancel, Run Schedule, Use Schedule, Remove Hold, or Cancel Hold. For other models such as the T4 Pro, press the +/- or up/down buttons first then press Cancel or ..., Verify the fan setting: Set the fan setting to "Auto.". This ensures that the fan will turn on automatically when the cooling system is activated. Double-check the mode and time settings: Ensure that the thermostat is correctly programmed with the desired mode and time settings. Incorrect settings can cause the "Cool On" message to appear., To unlock the thermostat, you would have to hold both of them down simultaneously. Then, hold the blank key (it's located at the bottom of the keypad). In a second or two, the display should change. In the middle of the screen, you'll find the up and down keys. Use them to change the numbers on the left to '0670'., 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. If you have ever faced a problem and are searching for solutions, this is the ..., Honeywell home thermostat. new batteries, programed, but flashing cool on in upper right corner of main screen. Model rth6360d1002 Contractor's Assistant: Where in your home is your Honeywell thermostat installed?, Sep 27, 2023 · The Honeywell thermostat cool on blinking issue is a common problem with air conditioning systems. When the thermostat display says “Cool On,” it means that the AC unit is working to pump cool air into the home. However, if the thermostat keeps blinking cool on for a long time and no cool air is felt, there may be an issue., 1. Inspect the Wiring. If your Honeywell thermostat wires are loose, or not inserted in the right terminals, the device may not turn on your heating system. So if your Honeywell thermostat won't turn on heat, the wires might be loose or inserted wrongly. Check and ensure the wires are inserted into the correct terminals., Stage 1 Thermostat Meaning. Single-stage systems use one heating and cooling output level. As such, they use single-stage thermostats. It uses two-thirds of the compressor capacity while stage two uses the full compressor. But that description of the differences between stage 1 and stage 2 thermostats won’t help you unless you know what ..., Honeywell AC thermostats have a cool-on blinking light that indicates the unit is working to cool down the room. This could be due to either an incorrectly set temperature or because of an issue with the thermostat itself. If you find your Honeywell AC thermostat's cool on light blinking, first check and make sure that you have selected a ..., Fix 4: Update Firmware And Restart. To troubleshoot the Honeywell T5 thermostat, start by checking for firmware updates. Install the latest version if available. Next, turn off the power to the thermostat and then turn it back on to perform a restart. Give the thermostat some time to reset and reestablish its connection., Low Refrigerant. How to Fix Honeywell Thermostat Cool On Blinking Light. 1. Lower Thermostat Temperature. 2. Check Thermostat Batteries. 3. Inspect Electrical …, Sep 15, 2023 · The Honeywell T4 thermostat’s blinking cool light might indicate a cooling issue. Conclusion. Troubleshooting the Honeywell T4 Pro thermostat can sometimes be a frustrating task. However, by following the steps outlined in this blog post, you can easily identify and fix common issues that may arise. Remember to check the power source, …, Stage 1 Thermostat Meaning. Single-stage systems use one heating and cooling output level. As such, they use single-stage thermostats. It uses two-thirds of the compressor capacity while stage two uses the full compressor. But that description of the differences between stage 1 and stage 2 thermostats won’t help you unless you know what ..., Check out this video that gives you the steps to change from heating to cooling., In a matter of minutes, the air should kick on and the snowflake will remain solid. If the blinking does not stop, the next step is to switch the dial to "off.". Perhaps the thermostat did not properly relay to the HVAC system. By moving the switch to "off" and then back to "cool," you can start the system up again., Fan Setting. - Verify the fan setting. It should be set to "Auto" rather than "On.". In "Auto" mode, the fan runs only when the cooling system is actively cooling the air. - "On" mode keeps the fan running continuously, which can circulate already cooled air, but it won't initiate cooling if the thermostat is set incorrectly., If the 'Cool On' light is blinking, mostly it means that the system is kickstarting and the safety timer has been tripped to prevent the thermostat's compressor from malfunctioning. ... Honeywell Thermostat Cool On Not Working: Easy Fix [2021] Honeywell Thermostat Not Communicating: Troubleshooting Guide [2021] ...