Honeywell home cool on blinking

Curious about your Honeywell thermostat's blinking 'Cool On' indicator? Decode the signal, troubleshoot, and keep your cooling system in check effortlessly. ... The 'Cool On' blinking serves a crucial purpose: it's all about safeguarding your heating and cooling equipment. This delay, which can last up to five minutes under normal ...

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.Why Is My Honeywell T4 Thermostat Cool On Blinking? The Honeywell T4 thermostat’s blinking cool light might indicate a cooling issue. Conclusion. Troubleshooting the Honeywell T4 Pro thermostat can sometimes be a frustrating task. However, by following the steps outlined in this blog post, you can easily identify and fix …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.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 SettingIf 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.

SKU: RTH221B1039/U1. Easy to Install and Program With the Honeywell Home 1-Week Programmable Thermostat from Resideo, you can customize comfort to fit your weekly schedule. It's easy to install and works with all standard home HVAC systems. SELECT A MODEL: 1-Week Programmable Thermostat.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. Cool Only Thermostat- Dual Scale Fahrenheit and Celsius Heat Only - 50-90 F 15-30 C for Vdc and millvoltage systems Heat Only Thermostat - 45-95 F Dual Scale Fahrenheit and CelsiusBlink’s co-founders have been working in security and automation for a number of years, and they observed that there was a strong overlap between developer operations (DevOps) and ...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.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 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.

SKU: RTH221B1039/U1. Easy to Install and Program With the Honeywell Home 1-Week Programmable Thermostat from Resideo, you can customize comfort to fit your weekly schedule. It's easy to install and works with all standard home HVAC systems. SELECT A MODEL: 1-Week Programmable Thermostat.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 …If you own a Honeywell AC, you know how important it is to keep your home cool and comfortable during the hot summer months. However, if you notice that your Honeywell AC cool on light is blinking, it can be a cause for concern. In this blog post, we will provide you with some troubleshooting tips to help you fix the issue and keep your home cool.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. Additional troubleshooting: Confirm that your wires are properly labeled. You can trace the wires back to the heating ...Honeywell thermostat cool on blinking flashing the honeywell thermostat " cool on" or the snowflake is blinking, that indicates the thermostat is in delay mode and it can hold up to 5 minutes. If the heating/cooling system is providing warm air when it s in cooling mode, complete the following steps: Make sure the thermostat is configured ...

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The thermostat has a built-in compressor protection (minimum off timer) that prevents the compressor from restarting too early after a shutdown. The minimum off timer is activated after the compressor turns off. The thermostat keeps the compressor off for a few minutes before restarting, to prevent equipment damage.Sometimes, you might see the reading on the screen is blinking heat on. Generally, the Honeywell thermostat blinks for protection purposes. A blinking heat on signal indicates that a safety timer's tripping that will protect the compressor of your thermostat. Sometimes, it might indicate a low battery.How to Reset Honeywell Thermostat. Resetting your Honeywell thermostat is a simple and painless process. Begin by pressing the reset button on the side of the thermostat, then wait for the display to clear. Next, press and hold down both the “up” and “down” buttons until all segments of the display flash twice.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.On most thermostats, the blinking cool means that the unit is in delay mode (usually 5 minutes) or the system isn't actually running. If your thermostat is blinking in cool instead of being solid This could be due to. Blocked Drain (Float switch is killing voltage to thermostat) Break in the thermostat wire between the airhandler/furnace ...Honeywell Thermostat Troubleshooting Guide (2024 Update) Thermostats play a crucial role in setting the indoor temperature. While there are slight deviations between models, design, ease of installation, and maintenance are usually the main factors for most customers. Honeywell is a trusted brand known for its innovative and user-friendly devices.

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 …Here's Why The 'Cool On' Indicator Is Blinking On Your Honeywell Thermostat & How To Fix ItA loose wire is one of the common reasons behind the Honeywell thermostat blinking the HEAT ON. When the thermostat blinks the HEAT ON, your device is in a 5-minute delay to give you heat. But more than 5 minutes is abnormal. The device increases the delay when the wires are loose and fail to signal your HVAC properly.If so, your thermostat may go into setup mode that can result in blinking Cool on indicator. You may also check and reconfigure the clock settings to make it set accordingly. Inspect the indoor AC filter. In theory, it is recommended to change the AC filter approximately once every three months. A dirty or clogged filter will make any unit to ...The blinking cool on your Honeywell thermostat indicates a potential issue with the cooling system, such as low refrigerant or a faulty compressor. Why Is My Honeywell Thermostat Showing A Blinking Cool But No Ac? If your Honeywell thermostat is showing a blinking cool but no AC, it could be due to a problem with the cooling …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 […]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. A blinking "Cool On" indicator on a Honeywell AC thermostat can indicate various problems, such as a wiring issue, a faulty temperature sensor, or a ...Honeywell Thermostat Cool On Blinking. honeywell thermostat cool on blinking. Wi-Fi Day Programmable Thermostat. ... -pole 15 Amp Line Voltage 120/240-volt TEP Series 5-2 Day Electronic Programmable Thermostat in White TEP362DW The Home Depot. DUAL-LITE LOT of EVHC6IDP-0-WM Bases EVODW Double Remote Heads New.Wait 5-10 minutes. Your thermostat could be facing a slight delay in restarting and activating …My honeywell thermostat is blinking Cool On, and my AC fan not blowing or any cold air coming out, Dont know where the - Answered by a verified HVAC Technician. We use cookies to give you the best possible experience on our website. ... Customer: we bought brand new home & moved 12/2018 JA: ...The year is flashing in top of screen select is at bottom but none of the buttons - Answered by a verified HVAC Technician We use cookies to give you the best possible experience on our website. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them.

However, if your Honeywell thermostat has been blinking for more than 5 minutes and you still cannot feel any cooling, resetting the thermostat can fix the issue. In this article, I discuss the different steps you can take to resolve the issues with ‘Cool On’ on your Honeywell thermostat and explain the different problems that may have ...

Resetting Honeywell Smart/Lyric Round Thermostat. Step 1: Press the Cloud Icon and hold it. Step 2: Press the Down Arrow button until Reset appears on the screen. Step 3: Select Reset to complete factory reset. Now your device has been successfully reset to factory default settings.The Honeywell thermostat system says wait on cool when it is prolonging an activation of your HVAC system. Most commonly, this is done to protect the HVAC system compressor. The compressor is responsible for circulating the refrigerant through your unit and helping it to cool down the air that enters your home. If your air conditioner has been ...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.Usually, a Honeywell thermostat will enter Recovery mode when it needs to adjust from a mode that is energy-saving. When this happens, it will turn on your HVAC system before the time you scheduled a certain temperature, so it will get the chance to adjust gradually. For instance, if you set up your thermostat to offer you a temperature of …WIFI 9000 COLOR TOUCHSCREEN THERMOSTAT Manual & Support. TH9320WF5003/U. Download Manual Download Installation Guide. Download Service Datasheet. WIFI 9000 COLOR TOUCHSCREEN THERMOSTAT Product Page.Turn off your thermostat, open the battery compartment on the front, and remove the batteries. Put the new batteries in the compartment and slide the protective plate over them. Place the thermostat back on the wall, turn it on, and check to make sure that the new batteries work. In a lot of ways, replacing the batteries on a Honeywell ...4 days ago · 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 ... First check that the thermostat is set to the Heat position. Make sure the temperature is set higher than the Inside temperature reading. Also check the circuit breaker and reset if necessary. Make sure that the furnace door is closed securely. If "wait" is in the screen or "heat on" is flashing - wait 5 minutes for the system to ...

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Another thing thing you want to check when honeywell is flashing a red light is check that your AC condenser unit is turning on and the fan is spinning. If the fan is not spinning you may have a defective fan motor. A defective fan motor is replaceable. But you will need to test it for continuity to ensure it is one causing the problem.On some Honeywell models, you can also set a time for the temporary hold to expire. For example, if the regular program is set for 65 degrees until 5:00 p.m., but you want to raise the temperature to 68 degrees until 3:00 p.m., you can set 3:00 p.m. as the time to change back to 65 degrees.To reset the system's schedule, press the System button. Next, hold the blank box that's in the center of the screen. When the numbers panel comes up, enter 0165 on the left and the number one on the right. Now press Done and your thermostat should have a reset schedule.Stage 1 Thermostat Meaning. Single-stage systems use one heating and cooling output level. As such, they use single-stage thermostats. It uses two-thirds of the compressor capacity while stage two uses the full compressor. But that description of the differences between stage 1 and stage 2 thermostats won't help you unless you know what ...When the thermostat light (Emergency Heat Light) is flashing or on during normal operation (whether in the cooling or the heating mode, but not the Emergency Heat mode), this usually indicates that the outdoor unit is "locked-out". This means the outdoor unit has shut itself off because of a problem, and it sends a signal to the thermostat ...System Diagnostic Mode. 8 Steps of Honeywell hz311 Troubleshooting Red Light. Step 1: Check the Manual. Step 2: Power Cycling. Step 3: Inspect Zoning Dampers. Step 4: Thermostat Connection. Step 5: Wiring Issues. Step 6: System Settings. Step 7: System Diagnostics.The blinking cool on your Honeywell thermostat indicates a potential issue with the cooling system, such as low refrigerant or a faulty compressor. Why Is My Honeywell Thermostat Showing A Blinking Cool But No Ac? If your Honeywell thermostat is showing a blinking cool but no AC, it could be due to a problem with the cooling …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.Low Batteries. A blinking "Cool On" message can appear due to dying batteries, a power surge, or a power outage. Thermostat batteries last for an average of 10 months, so it is easy to tell when dead batteries are the culprit. Sometimes, a Honeywell thermostat can bounce back after a power outage without requiring a reset.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. Additional troubleshooting: Confirm that your wires are properly labeled. You can trace the wires back to the heating ... ….

The T1 Pro Non-Programmable Thermostat comes with the standard UWP mounting system. The soft key controls (with a 2.37 sq. in. display) and the easy-to-read LED back light make this thermostat from Resideo one of the best choices in temperature control on the market. SELECT A MODEL: T1 Pro Non-Programmable Thermostat - 24 Vac.Cool On: Cooling system is on. Heat On: Heating system is on. Aux On: Auxiliary heat is on. (Only for heat pumps with this capability [select models only].) When Heat On or Cool On is flashing, compressor protection is engaged (see page 14). Current day/time (see page 6) Current program period Wake/Leave/Return/Sleep (see pages 9-10) Set ScheduleFIND THE USER GUIDE FOR YOUR THERMOSTAT. First, let's identify your device. Select the product you're having trouble with from the options below. komfort. komfort. valve-sizing. rondostat-videos. brochure-l5-emea.WIFI SMART COLOR THERMOSTAT Manual & Support. RTH9585WF1006/W, RTH9585WF1004/U. Download Manual. WIFI SMART COLOR THERMOSTAT Product Page.The most common problem is that your compressor needs 5 minutes to cool down if your Honeywell thermostat is blinking “Cool On”. Otherwise, you may need to …If your Honeywell thermostat is clicking on and off, it could indicate a problem with the thermostat or with the HVAC system. Some possible causes include: Low batteries: If the thermostat's batteries are low, it may make clicking sounds as it tries to power on. Dirty or faulty contacts: If the thermostat's contacts are dirty or faulty, it ...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.When it comes to controlling the temperature of your home or office in Shreveport, LA, Honeywell controllers are the best choice. Honeywell controllers are reliable and easy to use...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.A loose wire is one of the common reasons behind the Honeywell thermostat blinking the HEAT ON. When the thermostat blinks the HEAT ON, your device is in a 5-minute delay to give you heat. But more than 5 minutes is abnormal. The device increases the delay when the wires are loose and fail to signal your HVAC properly. Honeywell home cool on blinking, First check that the thermostat is set to the Heat position. Make sure the temperature is set higher than the Inside temperature reading. Also check the circuit breaker and reset if necessary. Make sure that the furnace door is closed securely. If “wait” is in the screen or “heat on” is flashing – wait 5 minutes for the system to ..., Home security is a top priority for homeowners. With the rise in crime rates, it’s important to have reliable and effective security measures in place to protect your loved ones an..., The T1 Pro Non-Programmable Thermostat comes with the standard UWP mounting system. The soft key controls (with a 2.37 sq. in. display) and the easy-to-read LED back light make this thermostat from Resideo one of the best choices in temperature control on the market. SELECT A MODEL: T1 Pro Non-Programmable Thermostat - 24 Vac., 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., Confirm the message "Heat On" is solid (not flashing) on the thermostat display. Confirm your wiring is correct, and the wires have good contact in the terminals (tug gently on the wires) Check your jumper wire. To operate heating, the thermostat requires power to the R terminal. (If you have a wire in the RC terminal and no wire in the R ..., The Honeywell AC thermostat cool on blinking issue can be resolved through a series of troubleshooting steps. Start by inspecting the thermostat wiring for any potential issues. Start by inspecting the thermostat wiring for any potential issues., My thermostat is flashing cool on.That's normal for many thermostats when the air conditioner is engaged.I don't want the air conditioner engaged.Maybe you t..., Advanced Troubleshooting for Honeywell Pro Series Cool On Blinking. If you’re experiencing the Honeywell Pro Series Cool On Blinking issue, don’t worry – there are several advanced steps you can take to resolve the problem. In this section, we will explore three key areas: inspecting the wiring connections, checking for software …, If you have a Honeywell T5 thermostat, then you may have noticed that it appears to be flashing or blinking cool. This is actually quite common and can indicate a few different issues. First of all, the thermostat might need batteries replaced, as its low battery warning system will cause the screen to flash 'cool' when the power supply is ..., When the thermostat light, Emergency Heat Light, is flashing, this is a way for your outdoor unit to let you know that it is "locked-out" and there is a problem. It is most often the case that your indoor unit does not know there is a problem and keeps running. Occasionally, resetting the system will solve the problem., Most Honeywell thermostats blink when in a time delay for cooling (or heating if it is a heat pump). This time delay feature protects the compressor from cranking too soon following a short off cycle or a power outage. The "cool on", "heat on", snowflake or flame icon will be blinking if this is the case. Honeywell Wireless Thermostat ..., By following the guide below, you can identify and resolve the problem, ensuring your home stays cool and comfortable during hot summer months. Page Contents. 1 Understanding Your Honeywell Thermostat; ... The Honeywell AC thermostat cool on blinking issue can be resolved through a series of troubleshooting steps. Start …, 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)., 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 ..., 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., A full WiFi Reset can be performed one of two ways: When registered with the Resideo App - Login, select the thermostat, then select the settings icon in the top-right corner. The "Reset WiFi" option is located at the bottom of the screen. Follow the prompts in the app to reconnect, or to connect your thermostat to another WiFi signal., Learn more about Honeywell Home Thermostats from Resideo at: https://bit.ly/3mD8GLwInstall and program your thermostat with these easy to follow step-by-step..., 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., If your Honeywell thermostat is flashing "Cool On," it means that the unit is turned on, but cooling is not currently required. This can happen if the room temperature is already at or below the set point. The fan will still run, but the compressor will not come on until the room temperature rises above the set point., May 4, 2022 · Confirm the message "Cool On" is solid (not blinking) on the thermostat display. Confirm your wiring is correct, and the wires have good contact in the terminals (tug gently on the wires) Check your jumper / R wire. Thermostats get power on the R and Rc terminals.If you have a wire in the R terminal, and no wire in the RC terminal, use the ... , 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 ..., Blink Charging (BLNK) stock is on the move Wednesday after the company announced plans to take on potential naked short sellers. BLNK joins list of companies taking on illegal shor..., 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., If this is the case, the furnace won't start working even though the thermostat shows on. See what temperature the thermostat is set to check if the problem is in the described situation. 2. Clogged Filters And Fan Blades. The next problem HVAC systems owners often encounter when the Honeywell thermostat says heat on but the heat is not ..., 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 ..., Honeywell Home uses an algorithm that fixes deadband at 0 °F; Number: 365. Description Cool 1 CPH (Cooling cycle rate stage 1) Options (factory default in bold) 1 - 6 CPH (3 CPH) Note: This ISU is only displayed when Cool /Compressor Stages is set to 1 or more stages. Cycle rate limits the maximum number of times the system can cycle in a 1 ..., Not all thermostats have this feature, so check your manual to see if yours does. If not, your problem could be something else. Solution: If you have a battery tester, take out your batteries and test them. Replace if necessary. If not, replace them anyway and see if that stops your thermostat from blinking. 3., First check that the thermostat is set to the Heat position. Make sure the temperature is set higher than the Inside temperature reading. Also check the circuit breaker and reset if necessary. Make sure that the furnace door is closed securely. If “wait” is in the screen or “heat on” is flashing – wait 5 minutes for the system to ..., The Honeywell thermostat cool on blinking issue is a common problem with air conditioning systems. When the thermostat display says "Cool On," it means that the AC unit is working to pump cool air into the home. However, if the thermostat keeps blinking cool on for a long time and no cool air is felt, there may be an issue., Despite the recent robust numbers on US housing, the looming fiscal cliff is still very much front and center. In post-earnings conference calls today, global manufacturing giants ..., To wrap it up, if you find the purge light on your Honeywell mini zone controller blinking, it indicates a potential issue with the discharge air sensor or other components of the system. Remember to ensure that the discharge air sensor is securely attached and consider replacing it if necessary. Additionally, check for any loose connections ..., Sometimes, all you would have to do to get rid of the blinking 'cool on' message is reset the thermostat. If your thermostat has batteries, then insert those backward for 5 seconds to reset the device. To reboot other Honeywell Pro Series thermostats, you would have to: Turn the device on. Press and hold the 'menu' button for 5 seconds., 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 ...