Learn more. There is no need to fret if you see a “Return” message on your Honeywell Thermostat. This is entirely usual and is key for the optimal performance of the device. It plays a fundamental role in the main characteristics of the equipment. The “Return” message blinks when it’s working in advance to reach set temperatures ...RECONNECTING A THERMOSTAT TO A WIFI NETWORK. If your device was previously connected, please remove the face plate from the wall plate for 30 seconds and then reconnect it. After. 2 minutes, check the following: WiFi Icon is present. Look for it in the top right or top left corners of the thermostat display. If the icon is present and does not ... 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. View and Download Honeywell 1-Heat/1-Cool - TH5110D1022 Large R operating instructions manual online. Non-programmable Thermostat. 1-Heat/1-Cool - TH5110D1022 Large R thermostat pdf manual download. Also for: Th5110d, Focuspro 5000, Th5100d1007/u.My own Honeywell thermostat pulled a fast one on me last summer. I remember the indoor temperature feeling like a sauna, while the thermostat insisted it was a cool 72 degrees. After consulting the user manual (found after a search of the interweb), I learned that a quick cleaning and recalibration fixed the issue. When Your Thermostat …The “Cool on” message on a Honeywell thermostat is also known as “delay mode”. It often flashes in the form of a blinking snowflake or as the word “wait’ as well. It’s a courtesy message to let you know that the AC will delay in coming on for approximately 5 minutes in order to protect your unit from short cycling which can cause ...CLICK LINKS BELOW FOR ITEMS IN/RELATED TO VIDEO🍒 Here's my thermostat https://amzn.to/3cMWO9X🍒 Upgrade to this one? https://amzn.to/3Sc8L9v🍒 This one al...Nov 16, 2023 · 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). Cool On Flashing. If your thermostat is blinking “cool on” one of three things has taken place. Someone tried to restart the compressor before the refrigerant …2. Common Issues with Honeywell Thermostat 2.1. Cool On Blinking. The Honeywell thermostat is flashing cool, which is a symbol that means there’s a problem. Your thermostat wants cool air, but the cooling system isn’t working correctly. It can be frustrating, especially on hot summer days when you want your home to stay nice and …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.The fan symbol on a Honeywell thermostat represents the fan mode. It indicates whether the fan is set to “auto” or “on” mode. If the fan symbol is illuminated, it means that the fan is set to the “on” mode and will run continuously, even when the temperature is not being regulated. If the fan symbol is not illuminated, it means that ...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 network. Touch “NEXT”. You will receive a “Success” message. Step2- Register your thermostat.To do this, find the various schedules on the display on your thermostat. Press the set button to get past the time and day. When you get to a scheduled time you want to cancel, press the hold button for about 5 seconds. Once the numbers on your screen changes to zero, press “Set” to lock in the changes.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. PRO 3000 1 Heat/1 Cool Non-Programmable Digital Thermostat. SKU: TH3110D1008/U. Simple Operation. This Honeywell Home PRO 3000 Non-Programmable Thermostat from Resideo offers basic operation such as a slide switch for selecting heat, cool, or operate the fan. The backlit digital display makes temperature and settings easier to read in various ... A blinking “Cool On” message can indicate various causes, such as dying batteries, a power surge, or a power outage. Thermostat batteries generally last for an average of 10 months, making it easy to identify when dead batteries are responsible for the blinking message. However, sometimes a Honeywell thermostat can recuperate after a power ... 7 Problems of Honeywell HZ311 Thermostat With Troubleshooting Guide. Problem 1: Incorrect Temperature Readings. Problem 2: Connectivity Issues. Problem 3: Unresponsive Controls. Problem 4: Heating or Cooling System Not Working. Problem 5: Display or Interface Issues. Problem 6: Short Cycling. Problem 7: Sensor Problems.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.’.Step one: Setting the time. Start by pressing and holding down the “SET” function until the date or time flashes. After display flashes, use arrow functions to alter and set the correct time. Honeywell Thermostats are equipped with arrow buttons that are essential and handy.As of 2015, Honeywell manufactures more than 60 thermostat models ranging from seven-day digital programmable thermostats to manual thermostats, and all models can be viewed on the...Check if the thermostat is set to “Heat” mode and if the “Heat On” button is blinking. This means that a safety timer for your thermostat’s compressor has been tripped. Once this stops the heat blinking, your thermostat should be able to maintain its heat setting again. The 4-5 minute blinking is the time delay.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 Setting If the Honeywell Thermostat says “Cool On”, set the temperature to the absolute lowest setting. After that, just re-install the Honeywell software and see if that changes anything. Tech Support 24/7. Ask an Appliance Repairman Online. Connect with the Expert via email, text or phone. Include photos, documents, and more.Honeywell thermostat indicates connection failure if there is an issue with the device’s connectivity. This problem can be resolved by troubleshooting the Wi-Fi connection or restarting the thermostat. ... Honeywell Thermostat Blinking Cool On But Not Working : Troubleshooting Guide. Next. How to Bypass Thermostat at the Control …Honeywell thermostats are known for their reliability and user-friendly design. However, like any electronic device, they can sometimes encounter issues that require troubleshootin...Honeywell controllers are a popular choice for many businesses in Shreveport, LA. They are reliable and easy to use, making them an ideal choice for controlling temperature and hum...Web connected thermostats are great, but they're expensive. If you want to make your own, blogger and engineer Nooganeer shows how to build one using a Raspberry Pi and an old iPho...Power outage or any interruptions in the power cause the thermostat to automatically switch to the setup mode. This is also one of the reasons why you find your Honeywell thermostat flashing cool on. Keep an eye on the clock and review all the settings accordingly. 3. Check Whether the Batteries Are Working.The battery of the thermostat is low. When the cool light on your Honeywell thermostat keeps flashing, it may mean that the batteries are running low. The new thermostat has separate lights that show when the battery is low, but the old one still shows when the battery is low by flashing a message. On average, thermostat batteries last for 10 ...This usually happens if it’s in delay and the flashing icon is an indicator. If you notice the flashing icon, give it five minutes, and it should be up and running. If you’ve done that and your Honeywell …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 ...Honeywell thermostat indicates connection failure if there is an issue with the device’s connectivity. This problem can be resolved by troubleshooting the Wi-Fi connection or restarting the thermostat. ... Honeywell Thermostat Blinking Cool On But Not Working : Troubleshooting Guide. Next. How to Bypass Thermostat at the Control …yourhome.honeywell.com RTH2300/RTH221 Series Programmable Thermostat Identify System Type This thermostat is compatible with the following systems: • Gas, oil or electric furnace • Central air conditioner • Hot water system with or without pump • Millivolt system • Central heating and cooling system • Heat pump without auxiliary ...On other models, you have to press and hold the Second and fourth black buttons simultaneously. Use the arrow buttons to change the number on the lower-left corner of the screen to 0670. Press the arrow buttons again to get the number “0”. Press “DONE” to confirm. To unlock the thermostat using the code: Press “MENU”.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.Jun 25, 2023 · 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. View and Download Honeywell 1-Heat/1-Cool - TH5110D1022 Large R operating instructions manual online. Non-programmable Thermostat. 1-Heat/1-Cool - TH5110D1022 Large R thermostat pdf manual download. Also for: Th5110d, Focuspro 5000, Th5100d1007/u.Aug 8, 2023 · If your Honeywell thermostat is set to cool, but not working, the most likely cause is a problem with the wiring or power supply. Check that all wires are connected securely and that you have sufficient power (a working battery if it uses one). If everything appears normal, then you may need to reset the thermostat by pressing and holding down ... Verify that the thermostat is switched to cool mode and has a cooling set point below the room temperature reading. Check the thermostat display for cooling, …1-Week Programmable Thermostat Support; 5-2 Day Programmable Thermostat Support; Single-stage Programmable Thermostat Support; Pro 2000 Horizontal Programmable Thermostat Support; T6 Pro Smart Thermostat Support; T5/T5+ …The “Cool on” message on a Honeywell thermostat is also known as “delay mode”. It often flashes in the form of a blinking snowflake or as the word “wait’ as well. It’s a courtesy message to let you know that the AC will delay in coming on for approximately 5 minutes in order to protect your unit from short cycling which can cause ...If your Honeywell thermostat won’t stop flashing ‘Cool On’, follow these steps to troubleshoot: Reset the Thermostat: First, try resetting the thermostat. This can often resolve any minor technical glitches. Check the Wiring: Check the wiring between the thermostat and your HVAC system for any visible damage.When the “Cool on” light blinks on your Honeywell thermostat, it’s not necessarily a sign that there is something that needs fixing. When the light blinks only for a few minutes and then turns off or becomes a solid light, it means your air conditioning unit has started to work.Jan 25, 2023 · Contents hide 1 Honeywell Home RTH221B Programmable Thermostat 2 Identify System Type 2.1 ATTENTION: MERCURY RECYCLING NOTICE 3 Customer Assistance 4 INSTALLATION 4.1 Install Batteries 5 Set fan operation switch 5.1 Advanced Installation 6 About your new thermostat 6.1 Thermostat controls 6.1.1 Display screen 6.2 Set the time and day 6.3 Built-in compressor protection 6.4 […] CLICK LINKS BELOW FOR ITEMS IN/RELATED TO VIDEO🍒 Here's my thermostat https://amzn.to/3cMWO9X🍒 Upgrade to this one? https://amzn.to/3Sc8L9v🍒 This one al...Troubleshooting guide: Why is your Honeywell thermostat flashing 'Cool on'? Get answers to fix HVAC issues fast...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 …1-Week Programmable Thermostat Support; 5-2 Day Programmable Thermostat Support; Single-stage Programmable Thermostat Support; Pro 2000 Horizontal Programmable Thermostat Support; T6 Pro Smart Thermostat Support; T5/T5+ …Is you house HVAC thermostat blinking "cool on" or "heat on" and does not turn on the furnace or air conditioner? This is most often caused because power was...Simply press the center button on the front of the thermostat, under where it says “unlock.”. Next, enter the four-digit passcode. The default password on this model is “1234”. From here, use the plus/minus buttons to change the number up and down. When you get to the correct number, hit the “select” button.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.Feb 16, 2023 · 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. Feb 22, 2022 · 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. 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; 5. Clogged Air Filters Could Cause Honeywell Thermostat Blinking Cool On; 6.View and Download Honeywell 1-Heat/1-Cool - TH5110D1022 Large R operating instructions manual online. Non-programmable Thermostat. 1-Heat/1-Cool - TH5110D1022 Large R thermostat pdf manual download. Also for: Th5110d, Focuspro 5000, Th5100d1007/u.With most Honeywell thermostats, the batteries are the only source of power, so the thermostat will not be able to operate if they are not functioning properly. Finally, the third potential reason is that your Honeywell thermostat may be malfunctioning due to a faulty wire or component.The first thing you want to check when your honeywell thermostat is flashing a red light is look at the settings on your thermostat and ensure that you have not turned on emergency heat. On most thermostats that are connected to zone controllers or equipment monitors, when emergency heat is manually turned on, it will flash a red light …Aug 4, 2023 · 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 ... Contents hide 1 Honeywell Home RTH221B Programmable Thermostat 2 Identify System Type 2.1 ATTENTION: MERCURY RECYCLING NOTICE 3 Customer Assistance 4 INSTALLATION 4.1 Install Batteries 5 Set fan operation switch 5.1 Advanced Installation 6 About your new thermostat 6.1 Thermostat controls 6.1.1 Display screen …Remove your thermostat from the wall, and open the battery holder on the side of your thermostat. Remove the old batteries and clean the inside of the holder. Insert the fresh set of batteries and close the battery holder. Remount the Honeywell thermostat on the wall again. Ensure that it clicks into position.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.Jan 17, 2024 · Turn on the power to the system and the thermostat by flipping the circuit breaker or the disconnect switch to the ON position. Check the thermostat and the system and see if they work properly. Make sure the thermostat is set to the correct mode and temperature and the system is not flashing heat on anymore. Wait 5-10 minutes. Your thermostat could be facing a slight delay in restarting and activating …Turn on the power to the system and the thermostat by flipping the circuit breaker or the disconnect switch to the ON position. Check the thermostat and the system and see if they work properly. Make sure the thermostat is set to the correct mode and temperature and the system is not flashing heat on anymore.The fan symbol on a Honeywell thermostat represents the fan mode. It indicates whether the fan is set to “auto” or “on” mode. If the fan symbol is illuminated, it means that the fan is set to the “on” mode and will run continuously, even when the temperature is not being regulated. If the fan symbol is not illuminated, it means that ...How often do you hear from customers who say their Honeywell thermostats are blinking “cool” or “off”? If you’re having trouble with your Honeywell thermostat, don’t worry – you’re not alone. Honeywell has been around since 1884, and they’ve been innovating ever since. The company was founded by Charles F. Brush, who wanted to createWhat Does Honeywell Thermostat Cool On Blinking Mean? The honeywell thermostat “cool on” blinking means that the device is in operational mode. This basically means that your thermostat is working to regulate the temperature. The AC unit in your home is pumping cool air into the room and trying to cool the temperature.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.Common Reasons for Honeywell Thermostat Blinking Cool On. System Starting Up The Honeywell cool on blinking is often seen when the system is just starting up. It’s a brief pause to ensure the compressor doesn’t cycle too quickly, usually lasting no more than 5 minutes.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 ...Make sure function 38 is set to 1, then proceed to function 39. Use the up or down arrow to change function 39 function to 0 then press done. WiFi setup will then be displayed on the screen.*. Step 2 – Connect the thermostat to your home WiFi (via an internet browser on your mobile device) After connecting to the thermostat WiFi ...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.The “Cool on” message on a Honeywell thermostat is also known as “delay mode”. It often flashes in the form of a blinking snowflake or as the word “wait’ as well. It’s a courtesy message to let you know that the AC will delay in coming on for approximately 5 minutes in order to protect your unit from short cycling which can cause ...Reason 7. Low on Refrigerant/ Refrigerant Leak. A refrigerant leak or low levels of refrigerant in your Honeywell thermostat can lead to short cycling. In this situation, short cycling occurs when the low-pressure switch shuts off the system when it …1-Week Programmable Thermostat Support; 5-2 Day Programmable Thermostat Support; Single-stage Programmable Thermostat Support; Pro 2000 Horizontal Programmable Thermostat Support; T6 Pro Smart Thermostat Support; T5/T5+ …Mar 16, 2023 · The fan symbol on a Honeywell thermostat represents the fan mode. It indicates whether the fan is set to “auto” or “on” mode. If the fan symbol is illuminated, it means that the fan is set to the “on” mode and will run continuously, even when the temperature is not being regulated. If the fan symbol is not illuminated, it means that ... Return is when you get back home, and Sleep is for the sleeping period. When your thermostat reads “Return,” it means that the Return schedule is currently working. Return programming makes sure that your home is at an ambient temperature when you get back from work. It follows the Leave time period where the temperature is …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.If the Honeywell Thermostat says “Cool On”, set the temperature to the absolute lowest setting. After that, just re-install the Honeywell software and see if that changes anything. Tech Support 24/7. Ask an Appliance Repairman Online. Connect with the Expert via email, text or phone. Include photos, documents, and more.Reattach the thermostat cover: Once the new battery is inserted, snap the thermostat cover back into place. Turn the power back on: Finally, turn the power back on to the thermostat by flipping the circuit breaker back on. After replacing the battery, wait for a few minutes to see if the low battery warning message or symbol disappears.Final Thoughts. 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 air into your home. The blinking is supposed to go away within 5 minutes.
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.. Apply for food stamps oregon
To make life easy, we’ve pulled together a list of the top Honeywell thermostat instruction manuals to get you back up and running! Note: Updated May 2023 with manuals for the latest Honeywell Thermostat models RTH8800WF2022 & RTH9600WF along with a few others that were missing from our list. Show Table of …Leave the unit for a while and check whether the system is going to start cooling or not. Check other thermostat settings – something might have made your thermostat switch back to setup mode. Also, check the time on the device, as wrong settings can make the ‘cool on’ indicator start blinking. Replace the batteries or check …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” but not working, there are a few possible causes and solutions. First, check the power source and make sure it’s properly ...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.Apr 29, 2021 · 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. As of 2015, Honeywell manufactures more than 60 thermostat models ranging from seven-day digital programmable thermostats to manual thermostats, and all models can be viewed on the...To troubleshoot a Braeburn thermostat that’s not cooling; Check if it’s set to cool mode and if the system is in delay. Verify that the furnace power switch or circuit breakers are not off or tripped. Inspect the thermostat wiring for loose wires or broken connections. Ensure that the thermostat is configured for the correct system type.The blinking of the “Cool On” indicator on a Honeywell AC thermostat indicates that the cooling system is running. This can be due to various factors such as a temporary power interruption or a faulty connection.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 defense in addition to the delay timer. If you try to start your HVAC system before the set delay time, the thermostat will flash cool on and won’t allow you to turn ...The Honeywell ST9400C manual is an essential resource for anyone who owns or operates a Honeywell ST9400C programmable thermostat. This comprehensive guide will help you understand...Nov 19, 2022 · When the “Cool on” light blinks on your Honeywell thermostat, it’s not necessarily a sign that there is something that needs fixing. When the light blinks only for a few minutes and then turns off or becomes a solid light, it means your air conditioning unit has started to work. Oct 4, 2021 · The blinking “Cool On” message on a Honeywell thermostat display indicates that the system is restarting, batteries need replacing in the control panel, or a fault with the system. If the blinking persists for more than five minutes, contact a technician to perform diagnostics. The “Cool On” indicator message on a Honeywell thermostat ... Here’s how to fix it: Make sure the thermostat is set to the desired temperature for heating. Try to change your thermostat settings manually. This can be done by pressing the “Up” arrow. After that, press the option that says “Switch to Permanent Hold.”. Your thermostat setting will then switch by matching the outdoor temperature.Common reasons behind wrong readings in your Honeywell thermostat are wrong location or calibration, sensor problems, outdated firmware, wiring issues, or old thermostats. To fix it, find the right location, recalibrate well, update the firmware, fix the sensor issues, and correct the wire connections. When your Honeywell thermostat …Verify that the thermostat is switched to cool mode and has a cooling set point below the room temperature reading. Check the thermostat display for cooling, …A blinking snowflake on a Honeywell thermostat is mostly caused by activated delay mode or an activated saver switch (if you are subscribed to one). This issue can be fixed by simply waiting for the delay time to elapse which is typically about 5 minutes or switching the saver switch off, respectively. Also read: Honeywell thermostat blinking ...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 ...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.Honeywell thermostat indicates connection failure if there is an issue with the device’s connectivity. This problem can be resolved by troubleshooting the Wi-Fi connection or restarting the thermostat..