22.4 "Cool On" or "Heat On" is flashing 23 Electrical Ratings 24 5-year limited warranty 25 Related Manuals: User Guide. Package Includes: T4 Pro Thermostat UWP™ Mounting System Decorative Cover Plate Screws and Anchors ... Pro Series Thermostat Honeywell T6 Pro Programmable Thermostat2 Thermostat Controls. 3 Programmable Thermostat. 4 To Adjust Program Schedules. 5 Adjusting Keypad Lockout. 6 Battery Replacement. 7 Troubleshooting. Download this manual. See also: Instruction and Installation Manual. T6 Pro.If your thermostat does not have this auto-updating capability or the date is not enabled, you will need to manually adjust the time and date on your thermostat. Please follow the steps in the links bellow, according to the thermostat family model that you own. 9000 family and VisionPro.This 7-Day Programmable Honeywell Home Thermostat is easy to install and operate, ... Our Accessibility Statement. Beat the heat and save this season on a smart home thermostat. Search Button Find a Pro. Toggle navigation Home Products ... T6 Pro Smart Thermostat Support; T5/T5+ Smart Thermostat Support;How to unlock a Honeywell pro series thermostat that's locked. TH6220u2000. We tried resetting it with changing the - Answered by a verified HVAC Technician ... The thermostat is showing a flashing year date and a low battery condition on my Honeywell thermostat and the air conditioning of course has stopped ... fan on and off for cool or ...Will resetting my Honeywell thermostat fix a blank screen? • Is your Honeywell thermostat showing a blank screen? Don't worry, we've got you covered! In this...Here's how to replace the batter in a Honeywell T4 Pro Programmable thermostat.HONEYWELL TH4110U2005/U HONEYWELL-TH4110U2005/U-T4 Pro Thermostat, Programmable or Non-Programmable, 1H/1C, White. 4.6 out of 5 stars 266. 21 offers from $37.03. Honeywell TH6220U2000/U T6 Pro Programmable Thermostat, 2 Heat / 1 Cool Heat Pump Or 2 Heat / 2 Cool Conventional, 2.27" x 6" x 5", White, Model:ITBD-3570150.Select "Schedule Reset". PERFORMING A HOMEKIT RESET. Press the Menu Icon. Scroll down to "Thermostat Information. Record the "Date Code". Press the "back" arrow, then scroll down to "Installer Options". Enter the Date Code when prompted to "Enter your password". Select "Reset". Select "HomeKit".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 compressor (see page 4).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.Step 1: Check Temperature Differential. To begin, press the "Menu" or "Settings" button on your Honeywell thermostat. Use the arrow keys or touchscreen to navigate to the temperature setting. Ensure your desired temperature is just a short distance from the current room temperature displayed on the thermostat's screen.Feb 13, 2021 · My thermostat is TH411OU2005. Honeywell home pro series. i think it is programable. i just want to set the temperature, but i can't because it keeps talking about time and fans and other stuff. can yo … read moreResetting the Honeywell thermostat to the default factory setting will delete all your saved settings. Follow the steps below to reset the Honeywell Vision Pro 8000 series. Press the “MENU” button. Go to the “PREFERENCES” tab. Scroll down and click on “RESTORE TO FACTORY DEFAULT.”. Tap “YES” to confirm the factory reset.® TH5000 Series 1 69-1923EFS—01 ENGLISH About your new thermostat ... Congratulations on the purchase of your new Honeywell thermostat. It has been designed to give you many years of reliable service and easy-to-use, ... Heat On/Cool On (If flashing, see page 9) System setting Heat/Cool/Auto/Off/ Em Heat (see page 7) Fan settingIf you have a Honeywell Pro Series thermostat, you may have noticed that the “cool on” indicator is blinking. This is normal behavior and indicates that the thermostat is in cooling mode. The reason the light blinks is because the thermostat is constantly making minor adjustments to maintain the set temperature.This thermostat is equipped with a clear and easy-to-read digital display, allowing you to easily program and adjust the temperature settings. It offers both heating and cooling modes, ensuring optimal comfort year-round. The Honeywell TH6210U2001/U thermostat is also compatible with a wide range of HVAC systems, making it suitable for most homes.To check the underline code behind the warning sign, follow these steps below: Step 1: The alert icon appears on the Home screen. Step 2: Press Menu, and then press until the display shows ALRT. Step 3: Press 'Select' to display which alert (s) are present. Step 4: The message REPL (REPLACE AIR FILTER) appears.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 ...Honeywell Home TH3210U2004 - T3 Pro Non-Programmable Thermostat (2H/1C)- The PRO series provides non-programmable thermostats for 24 Vac conventional and heat pump systems or 750 mV heating systems. Features Footprint covers the same space on the wall as the legacy PRO 3000 model. UWP: Uses the same wall plate system as the rest of the T Series portfolio.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...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.Reduce the temperature setting on the thermostat to the minimum possible value. Set your gadget to the lowest temperature possible and ensure that the ‘Cool’ mode is selected. In case, if your Honeywell Thermostat indicates cool on but no air is coming out. You should verify that the fan setting is set to Automatic.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.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.how do i unlock a Honeywell Pro Series Home Thermostat Model TH4210U20022 serial # 2104JC531955 ... The thermostat is showing a flashing year date and a low battery condition on my Honeywell thermostat and the air conditioning of course has stopped ... My thermostat is stuck with both the fan and cool on. I can't increase or reduce the temperature.We noticed that our A/C wasn't working and checked our Honeywell Pro Series model TH411OU2005 Thermostat. The Cool On was flashing and didn't stop flashing. ... We have a Honeywell Focus Pro 5000 series thermostat. I have turned on the heat and the Auxiliary heat display shows on the panel.If you need to reset your Honeywell Home Pro Series thermostat, the process is quite simple. First, locate the control panel on the front of your thermostat and press down firmly for at least 3 seconds until all buttons appear on the display screen. Once they do, look for a button labeled “Reset” or “System Reset” and press it once to ...Contents hide 1 Honeywell Home T4 Pro Thermostat Wiring Diagrams 2 WIRING DIAGRAMS 2.1 Stage Cool Only 3 Transformer System, 1H/1C: Oil Furnace 3.1 Hot Water Boiler, Heat Only 3.2 Hot Water Heat with Power Open/ Power Closed, Series 20 Zone Valve 4 2H/1C: Heat Pump with Electric Aux Heat 5 References: Honeywell Home T4 […]Whenever Cool On is flashing, it just means that a command was sent to your unit outside, and it will kick in within 2-5 minutes. It is simply a safety measure not to damage the compressor. ... On my Honeywell Home Pro Series thermostat there 3 things going on. 1. Cool on is flashing in top left corner.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 …If your Honeywell thermostat isn't displaying the cool option, it might be because you lack a cooling system like an air conditioner or a heat pump. Ensure you have an air conditioner installed. To troubleshoot, attempt setting your thermostat to defrost and observe if the condenser unit engages. If the outside condenser unit doesn't ...Press and hold the Fan Button and Up Arrow for about 5 seconds to change the screen. Press Back Button or Next Button until 39 appears on the left. Press the Up or Down Arrows to change the number on the right to 0. Press Done Button. "WiFi Setup" will appear on the thermostat screen after 1-2 minutes. To reconnect the thermostat to WiFi.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.Connected to your existing WiFi, the T6 Pro Smart Thermostat is already part of the family. Integration with your Apple Home and Amazon Echo lets you adjust your temperatures as easily as you change songs on your playlist. This smart home thermostat also works with your heating system's stages, up to 3 Heat/2 Cool with a heat pump.Thermostat non programmables. Termostatos no programables. PRO 1000 Series. This manual covers the following models: TH1100D: For 1-Heat systems TH1110D: For 1-Heat / 1-Cool systems. TH1210D: For 2-Heat / 1-Cool heat pump systems. (Remove the thermostat from its wallplate to find the model number.) CAUTION: EQUIPMENT DAMAGE HAZARD.Replacing thermostat batteries Install fresh batteries when the REPLACE BATTERIES warning begins flashing. The Replace Batteries warning flashes about 60 days before …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.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.Blinking “cool on” and no cold air being. 2 year old house, Pro series. Just today. 80 in the house. Replaced - Answered by a verified HVAC TechnicianA 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 ...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.This will take up to 3 minutes. My Lyric's display is not lighting up at all. 1. Reference your photo and documentation of your previous thermostat's wiring and confirm that there weren't any errors in your Lyric wiring. 2. Confirm that the provided AAA Lithium battery is still installed in your Lyric. Confirm that your wires are properly labeled.Is your thermostat repeatedly resetting, even when you haven’t touched it or adjusted the settings? In this case, the thermostat may be on hold. Expert Advice On Improving Your Hom...To reset your Honeywell t4 Pro thermostat, follow these steps: 1. Locate the “MENU” button on the thermostat. 2. Press and hold the “MENU” button until the screen changes. 3. Navigate to “RESET” using the arrow buttons. 4. Select “RESET” and confirm the reset by pressing “YES” when prompted.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 programmable thermostat comes with simple ..."Cool On" or "Heat On" is flashing. Compressor protection feature is engaged. Wait 5 minutes for the system to restart safely, ... Download Honeywell FocusPRO 5000 Series Manual. Advertisement. Related Manuals for Honeywell FocusPRO 5000. ... Honeywell T10 PRO Smart Thermostat Installation Guide (article) Honeywell Programmable …The reason the light is flashing is that the power outage has switched the thermostat back to setup mode. When a Honeywell thermostat is in setup mode it normally causes the "Cool on" light to blink. If the thermostat shows you that it is in setup mode you just have to set your thermostat again and the problem will be solved automatically.1. Verify the thermostat is wired correctly. 2. Make sure the thermostat is configured correctly for the heating/cooling system type. 3. Verify the wiring is connected correctly and securely to the thermostat. If the above information has been verified and the issue is still present, contact a HVAC professional.Last updated. 2/22/22. The temporary hold setting is when you change the temperature setting to a different temperature and it stays at that setting until the next schedule change. The permanent hold setting holds the temperature setting you have chosen for an indefinite time. This overrides your scheduled settings.In case of difficulty. 69-2798EFS—01 12. Temperature settings do not change. Make sure heating and cooling temperatures are set to acceptable ranges: • Heat:40°to90°F(4.5°to32°C). • Cool:50°to99°F(10°to37°C). "Heat On" or "Cool On" is flashing. • Compressor protection feature is engaged.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.Oct 25, 2023 · If you need to reset your Honeywell Home Pro Series thermostat, the process is quite simple. First, locate the control panel on the front of your thermostat and press down firmly for at least 3 seconds until all buttons appear on the display screen. Once they do, look for a button labeled “Reset” or “System Reset” and press it once to ...Step 1 – Set to Thermostat’s Lowest Temperature Setting. When troubleshooting your thermostat’s “cool on,” the best way to start is by setting the temperature at the lowest setting. Check to see whether the thermostat can control the temperature, and if not, try modifying the controller settings.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 programmable thermostat comes with simple ...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 ...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...The thermostat operates between 20-30 VAC, "supplied" to the R/RC terminals and "returning" through the C terminal. A C wire, connected to C on the equipment, is required for the thermostat to power itself. Verify the furnace / air handler door is closed, the power switch is on, and the breakers are on. Confirm you have a C wire in the C terminal.Page 10: Thermostat Mounting. Thermostat mounting 1.Push excess wire back into the wall opening. 2. Close the UWP door. It should remain closed without bulging. 3. Align the UWP with the thermostat, and push gently until the thermostat snaps in place. 4. Turn the power on at the breaker box or switch.Option 1: Soft Resetting Procedure. Sometimes, all it takes is a soft reset to get your Honeywell Thermostat Pro Series back on track. Think of it as a gentle nudge to remind your thermostat who's in charge. With just a few simple button presses, you can clear minor issues and restore your thermostat to its optimal state.I have a Honeywell pro-series. the temp is set for 78 (cool) but the room temp is 88. on the right of the screen is a - Answered by a verified HVAC Technician ... The COOL is on solid during what the thermostat thinks is cooling. When it is off = no operation. When flashing it is in delay. ... my honeywell thermostat Focus pro 5000 has the word ...Solution: Honeywell Thermostat Fan Won t Turn Off. It is not unusual to find which Cool On flashing on your thermostat , the it tends on happen at the wrong time. Fortunately, there are some getting steps for checking the cause of the problem and repair steps you can take.1 Common Issues With Honeywell Pro Series Thermostats. 1.1 Thermostat Not Working. 1.2 Blank Screen Or Unresponsive. 1.3 Thermostat Not Heating Up. 2 Troubleshooting Solutions. 2.1 Check Power Source And Batteries. 2.2 Inspect Circuit Breaker. 2.3 Ensure Indoor Unit Doors Are Closed. 2.4 Restart The Thermostat.Here's an easy four step process to resetting your thermostat after a power outage. 1. Turn off your thermostat. Before doing any other troubleshooting, start by finding your thermostat and turning it off. You don't want your thermostat to be on and signaling the system when completing the later steps in our process that involve electricity.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. If you have ever faced a problem and are searching for solutions, this is the ...Pro T701 Thermostat Flashing Cool on . If your Pro T701 thermostat is flashing “COOL” on the display, it indicates that your AC system has been turned off. This could be because you manually switched the system off, or because something in the HVAC system is malfunctioning.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.Lowering the temperature of your thermostat can do more than reduce your energy bill (although we think that benefit is so awesome that it still made the list). Dropping temps just...Last updated. 8/29/22. Why is my thermostat display showing “wait,” “waiting for equipment,” or flashing “cool on”? Each thermostat model has a different display …Make sure the temperature is set lower than the Inside temperature. Wait 5 minutes for the system to respond. 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). "Heat On" or "Cool On" is flashing.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 ...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 ...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.10 DIY Ways to Fix Honeywell Thermostat Cool On Blinking. Here are 10 common troubleshooting tips to stop your Honeywell thermostat from blinking Cool On: 1. Wait 10 Minutes; As mentioned if the blinking Cool On goes away after 5-10 minutes, the system likely just needed time to start up and begin cooling your home.Honeywell Home TH1110D2009 - T1 Pro Non Programmable Thermostat, 1H/1C Heat Pump, 1H/1C Conventional- The soft key controls (with a 2.37 sq. in. display) of the T1 Pro Thermostat have an easy-to-read LED back light. It's simple to install, easy to read and looks elegant. All these make it an ideal choice for any homeowner concerned with comfort, quality and aesthetic appeal.<br> <br><b>T1 Pro ...Share This Guide. 9 Reasons Your Honeywell Thermostat Won't Turn on AC System. 1) Low Batteries (On Selected Models) How to replace Honeywell thermostat batteries. 2) Bad Thermostat Wiring. 3) Tripped Circuit Breakers. How to reset tripped circuit breakers. 4) Misconfigured Thermostat. 5) Thermostat Compatibility Issues.Sep 15, 2023 · Change the temperature to the lowest possible. The first thing you should do is to make sure if the thermostat can regulate the temperature or not. Adjust the controller settings and see if the cooling works. Now set the temperature to the lowest possible while the mode is set to ‘Cool’ and the fan setting is on ‘Auto’.Contents hide 1 HONEYWELL T4 Pro Programmable Thermostat 2 Optional Cover Plate Installation 3 Power options 3.1 UWP Wiring terminal designations 3.2 Wiring conventional systems: forced air and Hydronics 4 Thermostat mounting 4.1 Installer setup (ISU) 5 Specifications 5.1 Electrical Ratings 6 Reference HONEYWELL T4 Pro Programmable Thermostat Package Includes T4 Pro Thermostat UWP™ MountingA 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 ...The Honeywell th ermostat red light might pop up due to a range of common issues. Firstly, check the battery - a low battery can trigger the red light. Secondly, ensure that the heating or cooling system is functioning correctly; disruptions can also cause the red indicator. Thermostat malfunctions or wiring problems might be behind the red ...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 ...Oct 25, 2023 · If you need to reset your Honeywell Home Pro Series thermostat, the process is quite simple. First, locate the control panel on the front of your thermostat and press down firmly for at least 3 seconds until all buttons appear on the display screen. Once they do, look for a button labeled “Reset” or “System Reset” and press it once to ...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 ...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.HONEYWELL TH4110U2005/U HONEYWELL-TH4110U2005/U-T4 Pro Thermostat, Programmable or Non-Programmable, 1H/1C, White. 4.6 out of 5 stars 266. 21 offers from $37.03. Honeywell TH6220U2000/U T6 Pro Programmable Thermostat, 2 Heat / 1 Cool Heat Pump Or 2 Heat / 2 Cool Conventional, 2.27" x 6" x 5", White, Model:ITBD-3570150.Step 1: Check Temperature Differential. To begin, press the "Menu" or "Settings" button on your Honeywell thermostat. Use the arrow keys or touchscreen to navigate to the temperature setting. Ensure your desired temperature is just a short distance from the current room temperature displayed on the thermostat's screen.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.Oct 4, 2023 · In summary, when faced with the Honeywell Pro Seri, Here are the steps you can take to troubleshoot your th, If your Honeywell thermostat is flashing “Cool On,” it means that the unit is turned on, but cooling is, This Cool Only Honeywell Home Econostat has a sleek design and an integrated thermometer and temperature setting , The filter can improve the system’s performance or cause extensive damage when clogged , Honeywell/pro series Th4110u2005 is not working. It was fine and then my husband who has very limited, Opening your Honeywell thermostat is a fairly simple and quick task. There are two different kinds , The Honeywell AC thermostat cool on blinking issue c, To troubleshoot a Braeburn thermostat that's not cooli, Resetting your T5 Thermostat is an easy process that can , On my Honeywell Home Pro Series thermostat there 3 things going on, Honeywell® T6 Pro Programmable Thermostat ^ White ^ 4.06W x 4.06", With the WiFi 9000 Color Touchscreen Thermostat, you gain access to a , To install a Honeywell thermostat, remove the old thermost, Locate solutions to some of the most frequent Honeywell thermostat er, Press and hold the Fan Button and Up Arrow for about 5 seconds, Honeywell FocusPRO 5000 With Auto changeover (heat/coo, To activate cool mode on your thermostat, tap Mode on the devic.