Honeywell pro series flashing cool on

T725. Pro1 Technologies. P.O. Box 3377 Springfield, MO 65808-3377 Toll Free: 888-776-1427 Web: www.pro1iaq.com Hours of Operation: M-F 9AM - 6PM Eastern. Table of Contents. Table of Contents Thermostat Operation Thermostat Quick Reference Programming Warranty Information.

Honeywell pro series flashing cool on. 1-800-468-1502. 2. Introduction. The Honeywell T6 Pro Z-Wave Programmable Thermostat is a Z-Wave Plus certi- fied thermostat capable of controlling up to three heat and two cool stages of heat pump, (incl. dual fuel heat pump systems) and up to two heat and two cool stages of conventional system (3H/2C HP, 2H/2C Conv.)

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 ...

Make sure power switch at heating & cooling system is on. Make sure furnace door is closed securely. Wait 5 minutes for the system to respond. 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). Compressor protection feature is engaged.What "Cool On" Blinking Means: The "Cool On" blinking on a Honeywell thermostat indicates it is in a delay mode, often a safety feature, before activating the air conditioner.; Common Causes for Blinking: Power loss, recent power outage, and thermostat's internal checks are the common causes for the blinking message.; Quick Fixes Available: Resetting the thermostat and checking the ...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. May 27, 2010 · 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 ... Look along the top of the thermostat and locate the button which reads 'press'. Press down on the button. This will release the battery pack area, which will rotate outward, and then should slide completely up and out. Remove the old batteries and dispose of them properly. Replace with new batteries.

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 ...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.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.Summary of Contents for Honeywell Home T1 Pro. Page 1 T1 Pro Product TH1110D2009 Information TH1010D2000 Built-in compressor protection Thermostat controls Damage can occur if the Message flashes until safe …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.control. This feature is NOT displayed if feature 200 is set to Cool Only. 218 = Reversing Valve O/B 0 = O (O/B in Cool) 1 = B (O/B in Heat) Note: This option is only displayed if the Heat Pump configured. Select whether reversing valve O/B should energize in cool or in heat. 220 = Cool Stages / Compressor Stages (200=Conv / 200=HP) 0, 1, 2If you're experiencing the Honeywell thermostat dispassionate on flashing issue, it are some troubleshooting steps that can help. Read this blog publish for more info. 914-666-9100

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.If the sensor status light starts flashing red, this means the battery charge is critically low, with only 2-3 weeks of use remaining. ... This series covers models Focus Pro, TH5110D, TH5320U & TH5220D. ... 1000 & 2000 Series. Honeywell 1000 and 2000 series thermostats are popular among those who are on a budget. These two series are widely ...If you're experiencing the Honeywell thermostat dispassionate on flashing issue, it are some troubleshooting steps that can help. Read this blog publish for more info. 914-666-9100The modes are only Heat, Cool and Off. I press the Menu and there is no "PROG" available. ... I have a Honeywell Home Pro Series Model # T*****5 and I just bought this home is doesn't display the PROG under the menu button and I can tell it must be on a schedule because it keeps changing the s ...I HAVE A HONEYWELL THERMSTAT MODEL RTH221 AND I CHANGED THE BATTERIES BUT THE COOL ON BUTTON IS NOT FLASHING ITS JUST - Answered by a verified HVAC Technician. ... Is my Honeywell home pro series model # TH4210u2002 compatible with the Honeywell home model# ***** ...

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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. 1.2) You have a conventional heating system. Another reason a honeywell thermostat will not display the cool option is that you don’t have a cooling system such as an air conditioner or a heat pump. Be sure that you have an air conditioner. You can try setting your thermostat to defrost and check if the condenser unit will engage.4000. Series. Programmable Digital Thermostat. User Guide. Read and save these instructions. Your new thermostat is pre-programmed. Just set the time and day. For help please visit yourhome.honeywell.com Press to set desired temperature. Note: Set SYSTEMswitch to the system you want to control (Heat or Cool).Honeywell TH6220WF2006/U Lyric T6 Pro Wi-Fi Programmable Thermostat with Stages Up to 2 Heat/1 Cool Heat Pump or 2 Heat/2 Cool Conventional . Connected, simple and smart, the T6 Smart Thermostat and adapts to your lifestyle. It can learn your preferred comfort levels over time and heats or cools on schedule. ... Honeywell TH6320ZW2003 T6 Pro ...Older Honeywell thermostats will also have a tougher time reading the temperature accurately. Your Honeywell thermostat providing an inaccurate reading is not a random occurrence. It’s a symptom of a problem you will have to address sooner rather than later. Find out how to correct your inaccurate Honeywell thermostat by reading on.

Heath : To get into the menu press and holf the up arrow and the fan button untill the display changes. Then press the next button until you get to option 15 and on the right side will be a 5 that is the 5 minute delay. Use the up and down arrows to change the 5 to 1 if you want the comprete.r delay to be 1 minu.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 T6 Pro Wi-Fi Programmable Thermostat 2 Thermostat Features 3 Thermostat overview 3.1 Resideo App overview 4 Adjusting the temperature 5 Schedule overrides 5.1 Adjusting the temperature in Auto mode 5.2 Selecting system mode 5.3 Setting the fan 6 Connecting to a WiFi network 6.1 Disconnecting and reconnecting to a WiFi […]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. Heat and cool settings must be at least 3 degrees apart. The thermostat will automatically adjust settings to maintain this 3-degree separation (called "deadband"). The 3-degree separation between heating and cooling set temperatures is fixed, and cannot be changed. Press system button until screen displays "Auto". Honeywell PRO 1000 Series User Manual View and Read online. Est. reading time 4 minutes. PRO 1000 Series Thermostat manuals and instructions online. ... When "Heat On" or "Cool On" is flashing, compressor protection is engaged. Select the system setting * Model TH1110E1000 has a larger display than shown in image.7. Check Circuit Breaker/Fuse. If the Honeywell thermostat goes out in the aftermath of a power surge, fuse blowout, or circuit breaker tripping incident, it will not switch back on after changing its batteries unless you go through the process of replacing your house's blown fuse or resetting your home's relevant circuit breaker.1. Verify that the thermostat is set to cool and is calling for cooling, usually indicated by the words "cool on," a snowflake icon, or a shimmering snowflake icon. If the room temperature is below the cool set point, the thermostat display should indicate a call for cooling. 2. Confirm that the circuit breakers are on.Summary of Contents for Honeywell Home T1 Pro. Page 1 T1 Pro Product TH1110D2009 Information TH1010D2000 Built-in compressor protection Thermostat controls Damage can occur if the Message flashes until safe • System status • Indoor temperature compressor is restarted restart time has elapsed. information setpoint too soon after shutdown. 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.

14″ Leather Pull-on. Structural and Proximity Boot. Made in the U.S.A. Berry Compliant (Model 5050B) Widths: D, E, EEE Full and half sizes 5 to 16. Certifications: NFPA 1971 - Structural FF NFPA 1992 - Liquid Splash. Honeywell PRO Series Proximity BT5050B are designed for unencumbered performance, agility, and safety. Comfortable and lightweight.

Works with Your Favorites. Connected to your existing WiFi, the T6 Pro Smart Thermostat is already part of the family. Integration with your Apple HomeKit and Amazon Echo lets you adjust your temperatures as easily as you change songs on your playlist. This thermostat also works with your heating systems stages, up to 3 Heat/2 Cool with heat pump.To check your air conditioner, switch it to "COOL," and make sure the fan is set on AUTO. Turn it down to around 60 degrees and wait five minutes. ... Troubleshooting a Honeywell smart thermostat is similar to a programmable one, so you can follow many of the same steps. Also, the great thing about smart thermostats is that generally, if ...Make sure the breaker is in the "ON" position or replace any blown fuses. If the thermostat is battery-powered, check the battery statu s and replace the batteries if necessary. Sometimes, cooling issues can arise if the Honeywell ProSeries thermostat is not correctly connected to the power source.If you see Honeywell thermostat flashing cool on, give it a time, around 15 to 20 minutes. Just turn everything off and wait. After the minute has passed, try to turn it on again. If nothing happens, contact the manufacturer’s customer service. But if the system works again, you know that you only need to give it time.Jul 8, 2023 · I have a Honeywell home pro series, the cool on is flashing but the ac will not come on. TH411OU2005. For the last - Answered by a verified HVAC Technician If you return from a vacation and find your Honeywell thermostat repeatedly flashing “cool on,” there’s no need to be alarmed. This occurrence can often be attributed to a power outage during your absence. When such an interruption happens, your thermostat may revert to setup mode, leading to the persistent blinking of the “cool on ...Looking for a way to set sail without having to spend a ton? You'll want to check out Carnival's latest flash sale — but you're going to need to act fast. Looking for a way to set ...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 create

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The thermostat’s Lyric Honeywell T6 Pro Series Smart Programmable Thermostat has auto-changeover. Based on the room temperature and the heating and cooling set points, the thermostat can switch between heating and cooling as needed. If your thermostat does not have “auto” as an option, it has not been set up for auto-changeover.It's blowing out hot air when it is on cool. Honeywell pro series. For an hour We put it back on factory settings to - Answered by a verified HVAC Technician ... Im replacing a honeywell pro series with yhe smart wifi 9585. I have a heat pump system and my wires are labeled as follows red wire R, green wire G, blue wire C, yellow wire Y ...Apr 3, 2014 ... Troubleshooting Honeywell Zone Board Brand new install on new construction and a home inspector said the compressor wouldn't run.View and Download Honeywell PRO TH3000 Series owner's manual online. Pro TH3000 Series Non-Programmable Digital Thermostats. ... Page 6 Operating Manual Current inside temperature Temperature setting tf "Heat On" or "Cool Low battery warning (see page 9) On" is flashing, com- pressor protection engaged (see page 8). System Status • Cool On ...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 …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 Honeywell thermostat series: Type of battery used: Honeywell 8000 series: 3 AAA batteries: Honeywell 6000 series: 2 AA batteries: Honeywell 5000 series: 2 AA batteries: Honeywell 4000 series: 2 AA batteries: Honeywell 3000 series: 2 AA batteries: Honeywell 2000 series: 2 AA batteries: Honeywell 1000 series: 2 AA batteriesIf you replaced the batteries on your CT3200, CT3300, T8112, T8132 thermostat and are still getting the LOW BAT message, follow these steps: 1. Remove the batteries from the thermostat and place them in the opposite / wrong / incorrect position in the thermostat place the (+) on the (-) and vice versa). 2. Leave the batteries like that for …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 … ….

2/22/22. If your thermostat is newly installed and the heat pump worked for cooling with the previous thermostat, check the following: 1. Verify that the thermostat is set to cool and is calling for cooling, usually indicated by the words "cool on," a snowflake icon, or a shimmering snowflake icon. If the room temperature is below the cool set ...Honeywell TH6210U2001/U T6 Pro Programmable Thermostat, 2 Heat / 1 Cool Heat Pump Or 1 Heat / 1 Cool Conventional: Amazon.com: ... Honeywell Home Large Cover Plate & Electrical Box Adaptor for T-Series Thermostats (THP2400A1080), White. $21.98 $ 21. 98. Get it as soon as Wednesday, May 1.Filtered Cool Moisture; Filter Free Cool Mist; Filter Free Warm Mist; Dual Comfort Cool + Warm Mist; ... Honeywell takes pride in ensuring effective air cleaning performance. To help ensure stated product performance and effectiveness, use only Genuine and Certified Honeywell replacement filters. ... Allergen Plus Series HEPA Consoles. Model ...View and Download Honeywell Home T6 Pro user manual online. Programmable Thermostat. T6 Pro thermostat pdf manual download. Also for: Th6320u2008, Th6220u2000, Th6210u2001. ... Off/Cool/Auto/EM Heat (emergency heat) • Menu. Press to display options. Start here to set a program. ... Thermostat Honeywell Home T6 Pro Series Installation ...Turn ON the thermostat. Press the PROGRAM button thrice. The reset button is located inside a small hole on the front panel of the thermostat and to the right of the buttons. Use a sharp object (toothpick, paperclip, or pin), put it in the hole, and press the button for about 5 seconds. Now, your thermostat has been reset.To set a Honeywell thermostat for your AC, start by setting the temperature you want the room to be. Then press 'SET' and use the arrows keys to adjust either up or down until it reaches your desired temperature. Next, press 'RUN'. This will activate the AC in order to reach that temperature. To turn off the AC completely, press 'OFF'.Summary of Contents for Honeywell Home T1 Pro. Page 1 T1 Pro Product TH1110D2009 Information TH1010D2000 Built-in compressor protection Thermostat controls Damage can occur if the Message flashes until safe …If you're experiencing the Honeywell thermostat cool on flashing problem, there are einigen troubleshooting steps such can helped. Read this blog post for more info. 914-939-4350Turn 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. Honeywell pro series flashing cool on, 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 …, The blinking "Cool On" means the cool cycle is in delay (5 minute by default). If it's continually blinking then either the thermostat is bad, or there's a short in the low voltage wiring that's causing it to reset everytime it tries to come back on (basically resetting itself over and over). 2. Reply. Effective-Brush9301., 1. Verify that the thermostat is set to cool and is calling for cooling, usually indicated by the words "cool on," a snowflake icon, or a shimmering snowflake icon. If the room temperature is below the cool set point, the thermostat display should indicate a call for cooling. 2. Confirm that the circuit breakers are on., The "Cool on" light will blink when the HVAC signals the air conditioning unit to start and will blink for up to about 5 minutes while the system is working through all its elements and startup phases. The light will turn off or become solid as soon as the air conditioning works properly. If you have had a power outage, it might also blink., Verify your thermostat’s wiring. Check that the wires are connected securely to the terminals. Remember, the color of the wires only relates to the terminals they are connecting. Reference: The Y terminal on your thermostat controls the primary (1st stage) cooling. (Or the Y and O/B terminal if you have a heat pump system) In addition, the G ..., Press SET CLOCK/DAY/SCHEDULE, then adjust time Press SET DAY, then select current day. FocusPRO. ®TH6000 Series 7 69-1921EFS—01. About your new thermostat. ENGLISH Press the FAN button to select Auto or On. In "Auto" mode (the most commonly used setting), the fan runs only when the heating orcoolingsystemison., Make sure power switch at heating & cooling system is on. Make sure furnace door is closed securely. Wait 5 minutes for the system to respond. 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). Compressor protection feature is engaged. , It's blowing out hot air when it is on cool. Honeywell pro series. For an hour We put it back on factory settings to - Answered by a verified HVAC Technician ... Im replacing a honeywell pro series with yhe smart wifi 9585. I have a heat pump system and my wires are labeled as follows red wire R, green wire G, blue wire C, yellow wire Y ..., The filter can improve the system’s performance or cause extensive damage when clogged with a significant amount of dirt. If the Cool On indicator flashes on your Honeywell thermostat, turn the air conditioner off and inspect the filter. A clogged air filter restricts the airflow into and out of the system, causing a malfunction., Sep 29, 2021 · 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 on” message if it is working hard to produce cool air. This can happen even if there isn’t an ... , PART 1 of 2 - Covering TH4110U2005/U and all T4 T5 T6 Push botton thermostat devices. Part 2 will cover FULL programming of device of a 7 day schedule and ot..., Hot flashes are a common symptom of menopause, but they can also be a symptom of anxiety. How do you know what’s causing your hot flashes? You can find out here. Figuring out what’..., To determine if thermostat is the issue. remove wires from thermostat. Tie red, yellow and green together and see if unit will stay on. If so, problem is thermostat.If not we need to find what is causing the unit to shut down.It can be a pressure switch, float switch or …, 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. , The Honeywell AC thermostat is displaying a blinking "Cool On" indicator. In this situation, it is important to troubleshoot the issue to identify the cause and find a solution. ... Read More Honeywell Pro Series Thermostat Fan Won't Turn Off: Troubleshooting Tips. Thermostat Solutions. Adt Thermostat Not Working: Troubleshooting and ..., Contents hide 1 Honeywell Home T6 Pro Wi-Fi Programmable Thermostat 2 Thermostat Features 3 Thermostat overview 3.1 Resideo App overview 4 Adjusting the temperature 5 Schedule overrides 5.1 Adjusting the temperature in Auto mode 5.2 Selecting system mode 5.3 Setting the fan 6 Connecting to a WiFi network 6.1 Disconnecting and …, 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 ..., 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..., or call Honeywell Customer Care toll-free at 1-800-468-1502. This manual covers the following models: TH5110D:For 1 Heat/1 Cool systems. TH5220D:For up to 2 Heat/2 Cool systems. TH5320U:For up to 3 Heat/2 Cool systems. MCR29404(Remove battery holder to find model number) FocusPRO. ®TH5000 Series 1 69-1923EFS—01. ENGLISH., Heat and cool settings must be at least 3 degrees apart. The thermostat will automatically adjust settings to maintain this 3-degree separation (called "deadband"). The 3-degree separation between heating and cooling set temperatures is fixed, and cannot be changed. Press system button until screen displays "Auto". , If your Honeywell thermostat isn't working after you replace the batteries, here are the top 4 things you need to do, in order: Double-check the installation. Examine the batteries. Test the fan. Reset the thermostat. Let's take a look at each of these steps in detail., Page 1: Thermostat Controls. 3000 Digital Thermostat Series User Guide Read and save these instructions. For help please visit yourhome.honeywell.com Thermostat controls Temperature adjustment Press the up or down buttons until you reach the desired temperature. NoTe: Make sure the SYSTEM switch is set to the system you want to control (Heat or ..., A Honeywell thermostat blinks "cool on" if the batteries are dying, the blower motor is bad, or the air filter is dirty. The message can also appear if the thermostat was improperly installed or if the wires are damaged. Honeywell thermostats also display a "cool on" message if the compressor needs 5 minutes to reset., 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.’. , Heat and cool settings must be at least 3 degrees apart. The thermostat will automatically adjust settings to maintain this 3-degree separation (called "deadband"). The 3-degree separation between heating and cooling set temperatures is fixed, and cannot be changed. Press system button until screen displays "Auto". , Wait 5-10 minutes. Your thermostat could be facing a slight delay in restarting and activating …, Hi, I have a Honeywell thermostat (Model 32207501-002 Rev. B) and even though it's in the "cool" position, fan is on "auto", and the temperature setting is HOLD 75 degrees, it is not turning on at all …, 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., Hello I have a Honeywell T4 Pro that was flashing "Cool On" on the right side of the screen. Nothing seems to help I did replace the batteries and it stopped blinking and now it is solid "Cool On" When I run the test it does kick the AC on. So the AC itself is fine. It seems like it is something with the thermostat. It has fresh batteries., Customer: HONEYWELL PRO SERIES JA: ... I have a Honeywell T4 Pro that was flashing "Cool On" on the. Hello I have a Honeywell T4 Pro that was flashing "Cool On" on the right side of the screen. Nothing seems to help I did replace the batteries and it stopped blinking and now it is solid "Cool On" Whe ..., 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 ..., The FAN selection key has two or three positions: Auto, On, and on select models, Circ (Circulate). The Auto position will allow the system fan to operate whenever the heating or cooling system is turned on by the thermostat. The fan will not blow air unless there is a call from the system. This is the normal setting for a system fan., We would like to show you a description here but the site won't allow us.