Honeywell thermostat pro series cool on flashing

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.

Step 2 – Check to See if the Thermostat or the Clock are Set. Your thermostat could go into setup mode if you had a recent power outage or no power for a while. This can cause the “cool on” indicator to keep blinking. So, if you did have a power outage, the first thing to do is check your settings.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.Flashing cool on. Contractor's Assistant: Do you know the model of your Honeywell thermostat? How old is it? 3 years old, honeywell home pro series. Contractor's Assistant: How long has this been going on with your Honeywell thermostat? What have you tried so far? Turned off circuit breakers for ac and furnace, turned back on, new batteries in thermostat, cleaned ac unit yesterday, today fan ...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.How to lock Honeywell 6000 thermostat. Go to “Up” and “Down” buttons to the right of the LCD display on your Honeywell thermostat. Tap “Up” and “Down” until you get to the desired temperature on the display. Press the button beneath “Hold” on the LCD display. “Permanent Hold” will appear on the screen. Your thermostat is ...

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.Programming Honeywell Pro 3000 Thermostat. Honeywell Pro 3000 Thermostat User Guide: Jones Air Conditioning And Electric. 3920 Progress Ave. | Naples, FL 34104 | 239-596-5855. "Measure Success One Customer At A Time". AC Lic # CAC1813838 Elec Lic # EC0002113. Serving the Naples, Marco Island, Bonita Springs, Estero & San Carlos Park areas!Also Read - Honeywell Thermostat Cool On Blinking (Here's How To Fix) Is it bad if the thermostat goes into recovery mode? No, it is not bad if your thermostat goes into recovery mode. It is a good thing that shows that your thermostat is working properly and efficiently. Recovery mode is a feature that helps you save energy and money ...In summary, when faced with the Honeywell Pro Series Cool On Blinking issue, it is essential to check the power source, perform a thermostat reset, and adjust the fan settings. By following these possible , you can troubleshoot and resolve the blinking light problem, restoring the proper functionality of your Honeywell Pro Series thermostat.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.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 thermostat installed on your Mercury Sable's 3.0l engine is what allows coolant to flow from the radiator to the engine. When the thermostat goes out, your engine temperature w...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+ Smart …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.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.Adaptive Intelligent Recovery:The T6 Pro Smart thermostat learns your heating and cooling cycle times to make sure the system delivers the temperature you want, when you want it. 4. Mode. Touch to select system mode: • Auto (if enabled) • Heat • Cool • Off • Em Heat (Emergency Heat) Menu.

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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.Have a Honeywell T4 Pro thermostat. Does not display anything but flashing 2023 in upper LH corner and select in lower - Answered by a verified HVAC Technician ... Honeywell home pro series thermostat. It's not even 2 years old ... Honeywell ProSeries display reads "Cool On" "Fan On" "Permanent Hold" and temp reads 25 degrees. ...Your local energy company may be giving away free smart thermostats—here’s how to get one. There’s no such thing as a free lunch, but there is such thing as a free smart thermostat...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 ...

Adaptive Intelligent Recovery:The T6 Pro Smart thermostat learns your heating and cooling cycle times to make sure the system delivers the temperature you want, when you want it. 4. Mode. Touch to select system mode: • Auto (if enabled) • Heat • Cool • Off • Em Heat (Emergency Heat) Menu.From https://www.justanswer.com/ythiJACUSTOMER-63s3by4n-: HVAC Technician: I have a honeywell pro th4000 series system.JACUSTOMER-63s3by4n-: HVAC Technician:...View and Download Honeywell Home T4 Pro Series manual online. Programmable Thermostat. T4 Pro Series thermostat pdf manual download. Also for: Th4110u2005, Th4210u2002. ... Press Select to enter System Test. 3 Use to change between Heat, Cool, Fan, Em. Page 18: Troubleshooting Troubleshooting If you have difficulty with your thermostat, please ...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+ Smart Thermostat SupportWhat I see: This stock responds well to economic recovery....AAPL Lucky break. I touched on this in my Market Recon column this morning. I got lucky. Last week. I mean it makes sen...20 Apr 2020 ... Honeywell Pro Series Thermostat Battery Replacement (BATT) ... How to Use Your Honeywell T4 Pro Thermostat ... HVAC Thermostat Blinking Cool On But ...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+ Smart Thermostat SupportFollow in these steps. Step 1. Go to the thermostat configuration and enter the correct system type and change the reversing valve setting. Step 2. Remove the thermostat cover from the wall and don’t forget to take a snap of the current wiring (you may need to restore your wiring to the current one.) Step 3. 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. 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.

Locate solutions to some of the most frequent Honeywell thermostat errors and how you can repair them. ... "Cool On" or "Heat On" is Blinking. ... Honeywell T6 Pro Smart Programmable Thermostat (TH411OU2005) 164—Heat pump requires service. Reach Service Experts Heating, Air Conditioning & Plumbing at 866-397-3787 for support.

Try Resetting the Thermostat to Factory Settings. 1. Honeywell Lyric Y Family. You must press the reset button and wait for 5-10 seconds, later release the button. 2. Honeywell 4000/6000/8000. Press and hold the "Reset" button for 5-10 seconds. Release the "Reset" button. 3. 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. 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 ...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 Setting1. Check Thermostat Settings. 2. Check Your Thermostat’s Battery. 3. Set Your Thermostat to The Lowest Temperature. 4. Check If Both the Outdoor and Indoor Units Have a Power Supply. 5. Clogged Air Filters Could Cause Honeywell Thermostat Blinking Cool On. 6. Dirty Coils Can Cause Honeywell Thermostat Flashing “Cool On” 7.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.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.All Honeywell thermostats that have batteries store the batteries in the control panel. Locate the batteries by removing the battery compartment tray or cover or by removing the unit's faceplate. Carefully extract the batteries, and replace them. Be sure to place the batteries in the correct orientation. The battery-powered control unit of ...

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Summary of Contents for Pro T721. Page 1 Operation Manual Operation Manual... Page 2 T721 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 Page Caution Table of Contents Thermostat Operation Thermostat Quick Reference Equipment ...PRO 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 SYSTEM switch to the system you want to control (Heat or Cool). Fan Switch is used to control your ...Contents hide 1 Honeywell Home RTH6360 Series Programmable Thermostat 2 Included in your box 3 Tools you will need 4 Removing your old thermostat 5 Set date and time 6 System Setup 7 System Setup options 8 System operation settings 8.1 System modes: 8.2 Fan operation settings 9 Program Schedule 9.1 To adjust program schedules. […]My Honeywell Home Pro Series thermostat is offline and there is no display. I have two thermostats and the other one is working fine. ... Cool on is flashing in top left corner. 2. A triangle is light in middle of top of display. ... We just installed a Honeywell Pro TH8000 thermostat and it is blowing hot air when it is set to cool ...A Honeywell thermostat will go blank, in case the device is off (there is no power, the circuit breaker had tripped, the batteries are dead), there are issues with the wiring, or the safety switch had tripped. Low display brightness can also be the root cause of the problem. Why Does Honeywell Thermostat Go Blank?. The thermostat might …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.In conclusion, troubleshooting issues with a Honeywell non-programmable thermostat can be frustrating, but with the right steps, you can quickly resolve common problems. This comprehensive guide has provided troubleshooting tips for various issues, including incorrect temperature readings, unresponsive controls, system malfunctions, battery ...PRO 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 SYSTEM switch to the system you want to control (Heat or Cool). Fan Switch is used to control your ...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...View and Download Honeywell Home T3 Pro user manual online. T3 Pro thermostat pdf manual download. Also for: Th3110u2008, Th3210u2004, Th3210u2004/u, Th3110u2008/u. ... (Heat, Off, Cool) or Fan. settings options. Table of Contents ... Thermostat Honeywell Home T6 Pro Series Installation Instructions ManualSep 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’. 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... ….

Thermostat controls. The screen will wake up by pressing any of the three buttons. If powered by the C wire, the screen stays lit for 45 seconds after you complete changes. If powered by battery only, the screen stays lit for 8 seconds. Depending on how your thermostat was installed, the screen light may always be on.If you need to reset your Honeywell Pro Series thermostat, the process is simple. First, locate the Reset button on the thermostat’s control panel. It should be located near the bottom of the device and may have a “Reset” label above or below it. Once you’ve located it, press and hold down for 10 seconds until all settings are restored ...To set up a weekly schedule on your Honeywell Home Pro Series thermostat, follow these steps: Press the Menu button. Select Schedule. Select the day of the week that you want to program. Select the time period that you want to program. Set the desired temperature. Repeat steps 4 and 5 for each time period that you want to program.Honeywell Pro Series. About a year old, Front cover says "Honeywell - Answered by a verified HVAC Technician ... I am trying to switch from heat to cool. it doesn't do anything. there is a lock symbol at the bottom. I pushed that and got a request for a pin. ... display says unlock at the bottom of the display — it's a pro series Honeywell ...Return mode starts flashing whenever the Honeywell thermostat is preparing in advance for the "Return" or "Home" schedule periods. ... PRO 4000 and RTH 2300 Series. Programmable thermostats. Schedule Mode: 5+2; ... 10 Steps to Fix a Honeywell Thermostat Flashing Cool On or Heat On. Disclaimer: You are responsible for your own safety. ...How to unlock a Honeywell pro series thermostat that's locked. TH6220u2000. We tried resetting it with changing the - Answered by a verified HVAC TechnicianLa 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.I have a Honeywell home pro series, the cool on is flashing but the ac will not come on. ... On my Honeywell Home Pro Series thermostat there 3 things going on. 1. Cool on is flashing in top left corner. 2. A triangle is light in middle of top of display. 3.The FocusPRO® thermostat has an easy-to-read backlit digital screen paired with a simple push-button interface. The easy installation means more jobs, done quicker; which adds up to more profits for you.. Wireless connectivity. WiFi access with TCC app when RedLINK® Gateway is used. Relocate a thermostat or upgrade equipment without running ...Honeywell YRTH series thermostat troubleshooting. Display is blank. Make sure fresh AA alkaline batteries are properly installed. Cannot change system setting to Cool. Check Function 0170: System Type to make sure it is set to match your heating and cooling equipment. Fan does not turn on when heat is required. Honeywell thermostat pro series cool on flashing, Never use sharp instruments, such as a pencil or pen, to press touchscreen keys. To prevent damage to the thermostat, always press keys with your fingertip. This manual covers the following models. TH8110U: For 1 Heat/1 Cool systems. TH8320U: For up to 3 Heat/2 Cool systems., To adjust program schedules (RTH221) Press SET until Set Schedule is displayed. Press s or t to set your Wake time (Mo-Su), then press SET. Press s or t to set the temperature for this time period, then press SET. Set time and temperature for the next time period (Leave). Repeat steps 2 and 3 for each time period., 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)., 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., How to lock Honeywell 6000 thermostat. Go to "Up" and "Down" buttons to the right of the LCD display on your Honeywell thermostat. Tap "Up" and "Down" until you get to the desired temperature on the display. Press the button beneath "Hold" on the LCD display. "Permanent Hold" will appear on the screen. Your thermostat is ..., 5/2-day programmable thermostats. 5/2 thermostats let you create two different schedules: one for the weekdays and one for the weekends. 🏆 Our pick: Honeywell RTH2300B. Honeywell programmable thermostats without Wi-Fi or smart features usually retail for about $50-70. Programmable thermostats are ideal for:, If Heat On or Cool On is flashing, compressor protection is engaged. Pull at bottom to remove thermostat from wallplate. Turn thermostat over, insert fresh AA alkaline batteries, then reinstall thermostat. Cool On 75Inside 75Set To Message flashes until safe restart time has elapsed. 33-00300EFS-05 Input: 24 V~ @ 60 Hz, 1.0 A Electrical Ratings, 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..., 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..., 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., The thermostat is a piece of our home we instinctively trust.We rely on it all the time to ensure that we can get comfortable as we relax.Unfortunately, that trusty thermostat could also be the source of confusion and frustration inside your home.One morning, you may find the temperature to be chilly even though your Honeywell thermostat is saying something different., 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., 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..., 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..., 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., Here’s How to Fix It. What does the Honeywell thermostat “cool on” indicator mean? If your Honeywell thermostat displays a “Cool On” message, it simply …, PRO TH3000 Series Non-Programmable Digital Thermostat 69-1776ES-1. ... If "Heat On" or "Cool On" is flashing, com-pressor protection is engaged (see page 8). Low battery warning ... PRO TH3110D / TH3210D 13 Honeywell warrants this product, excluding battery, to be free from defects in the workmanship ..., When troubleshooting a Honeywell thermostat blinking cool on but not working issue, it is essential to check the thermostat settings. Start by adjusting the temperature settings to ensure they are accurately reflecting your desired comfort level. Additionally, examine the mode settings to verify that the system is set to cool mode. ..., To reset the reminder: 600 Family Models - hold the Program and Time button down for 3 seconds. 700 Family Models will have a column of buttons on the left side of your thermostat - hold the second button from the top down for 3 seconds. 801 Model will have 2 buttons behind the door - hold down the one on the left (Fan Button) for 3 seconds., 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+ Smart Thermostat Support, 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, usually indicated by the words “cool on” or a snowflake icon. If these icons are flashing, the thermostat is in delay mode, which can last up to 5 minutes., About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ..., In conclusion, troubleshooting issues with a Honeywell non-programmable thermostat can be frustrating, but with the right steps, you can quickly resolve common problems. This comprehensive guide has provided troubleshooting tips for various issues, including incorrect temperature readings, unresponsive controls, system malfunctions, battery ..., Possible reasons a honeywell thermostat keeps going up to 85 degrees. Cause. Fix. Low Battery. Replace battery. Active program Schedule. Use hold function to override a schedule or clear schedules. Faulty wiring. Ensure C wire is connected., 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., View and Download Honeywell Home T4 Pro Series manual online. Programmable Thermostat. T4 Pro Series thermostat pdf manual download. Also for: Th4110u2005, Th4210u2002. ... Press Select to enter System Test. 3 Use to change between Heat, Cool, Fan, Em. Page 18: Troubleshooting Troubleshooting If you have difficulty with your thermostat, please ..., Honeywell FocusPRO 5000 With Auto changeover (heat/cool) Auto Changeover is a feature used in climates where both air conditioning and heating are used on the same day. When the system is set to Auto, the thermostat automatically selects heating or cooling depending on the indoor temperature. Heat and cool settings must be at least 3 degrees apart., Why is my Honeywell Thermostat Blinking Cool On? Five-Minute Compressor Delay. Low Thermostat Batteries. Power Outage. AC Unit Malfunction. …, 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., On my Honeywell Home Pro Series thermostat there 3 things going on. 1. Cool on is flashing in top left corner. 2. A triangle is light in middle of top of display. 3. Top right corner by Wi-fi there is … read more, 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., Gently pull the thermostat away from the wallplate, remove the battery and replace it with a new one. To tell if your Lyric has AC power, gently pull the thermostat away from the wallplate and look at your wiring. If you have a wire in the C terminal, you should have AC power and your Lyric's screen should not go blank., Download this manual. PRO 2000 Series. PROGRAMMABLE THERMOSTATS. TH2110DV1008, TH2210DV1006. THIS MANUAL COVERS THE. FOLLOWING MODELS: TH2110D: For 1-Heat / 1-Cool systems. TH2210D: For 2-Heat / 1-Cool heat pump systems. (Remove the thermostat from its wallplate to find the.