Honeywell cool on blinking

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.

Honeywell cool on blinking. 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.

If your thermostat is blinking, there is likely a problem with the battery. The blinking is used as an alert that it's time to replace it before the battery dies. If it continues to blink after you've changed out the battery, there may be a bigger problem with your thermostat. Another reason your thermostat may be blinking is that you have a ...

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 ("Waiting for Equipment" is not displayed ...If your thermostat is blinking "cool on" one of three things has taken place. Someone tried to restart the compressor before the refrigerant had time to settle. A sudden change from cool to heat, or heat to cool. Changing the batteries in your system may also cause this to happen. Honeywell thermostats are equipped with a second line of ...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...T4 Pro Programmable Thermostat, 1 Heat/1 Cool. SKU: TH4110U2005/U. Simple Control with Smart Learning. Easy to install and intuitive to use, the T4 Pro Programmable Thermostat learns how long it takes your system to reach the desired temperature and activates the system earlier to help you feel comfortable sooner. SELECT A MODEL:Product Finder. Start your search with category name, product name, part number, etc.Just came home to a cold house. The Honeywell zone unit Hz311 is flashing purge. Then the heat tried kicking on. Purge not flashing, heat light is red, zone one green and zone 2 & 3 red. Igniter sound … read more7 Problems of Honeywell HZ311 Thermostat With Troubleshooting Guide. Problem 1: Incorrect Temperature Readings. Problem 2: Connectivity Issues. Problem 3: Unresponsive Controls. Problem 4: Heating or Cooling System Not Working. Problem 5: Display or Interface Issues. Problem 6: Short Cycling. Problem 7: Sensor Problems.

The Thermostat shows cool on blinking. No fan, no compressor. - Answered by a verified HVAC Technician ... Hello, I have a Honeywell EIM with a TH6320R 1004 Thermostat. The Thermostat shows cool on blinking. No fan, no compressor. Note: I had waited 5-10 minutes since power-up. Thanks for your advice and insights!My Honeywell zone system has a blinking light for the cool 1 my Honeywell zone system has a blinking green light for the cool 1 setting. zone 1 and zone 2 are showing red … read moreIf the thermostat is blinking cool on but not working, this could indicate a power issue. Make sure to follow these steps to troubleshoot the problem and resolve it. Step 2: Check Thermostat Settings. When troubleshooting a Honeywell thermostat blinking cool on but not working issue, it is essential to check the thermostat settings.Sep 15, 2023 · To set your Honeywell Thermostat to permanent hold, you need to first press the + or – button and adjust the temperature. The thermostat will display ‘temporary hold’ along with a flashing setpoint temperature. While the temperature is flashing, press the ‘hold’ button and change it to permanent hold. I was trying to take a nap on an ...Good morning, Quartz readers! Good morning, Quartz readers! What to watch for today Obama hears from the 1% on how much tax they want to pay. The US president will meet with chief ...

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.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 ...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 Setting7 Problems of Honeywell HZ311 Thermostat With Troubleshooting Guide. Problem 1: Incorrect Temperature Readings. Problem 2: Connectivity Issues. Problem 3: Unresponsive Controls. Problem 4: Heating or Cooling System Not Working. Problem 5: Display or Interface Issues. Problem 6: Short Cycling. Problem 7: Sensor Problems.The 7800 SERIES Relay Module should start the INITIATE sequence. Let the sequence advance to PILOT IGN (status is displayed on the Keyboard Display Module, if used), PILOT LED turns on, ignition spark should occur and the pilot should light. If the pilot ignites, the FLAME LED is energized. Go to step 7.If your Honeywell thermostat is displaying a “Cool On” message and blinking, but the unit is not actually cooling, there are several potential causes. First, check to make sure that the batteries in the unit …

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Related Article: Honeywell Thermostat Cool on Blinking. Rate this post. Adrian Simmons (Licensed Appliance Repair Expert ) Adrian is an ISCET licensed professional that has completed the National Appliance Service Technician Certification Exam and has the expertise to diagnose and repair any appliance. He is well-versed in the latest ...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 system’s ...When a Honeywell thermostat blinks on and off, it can be a sign of a problem that requires attention. Understanding why the thermostat is blinking can help homeowners diagnose and fix the issue. Common Causes of Blinking. There are several common causes of a Honeywell thermostat blinking on and off. One possible cause is …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.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.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.

I just changed the option..waiting for it to come on now The "cool on" is flashing HVAC Technician: HVAC Guru , HVAC TECH replied 6 years ago OK make sure you have the crossover valve set to the right one it is 0 or 1 depending on the wiring to the outside unit.My Honeywell zone system has a blinking light for the cool 1 my Honeywell zone system has a blinking green light for the cool 1 setting. zone 1 and zone 2 are showing red … read moreIf your Honeywell thermostat is blinking cool, it may indicate a problem with the cooling system. This issue could be due to a malfunctioning sensor or a lack of power to the cooling system. It’s important to troubleshoot the thermostat and the cooling system to identify and resolve the issue. A blinking cool indicator on your Honeywell ...Hi, I have a multi-zone residential setup using the Honeywell Z311. When I call for the AC from the thermostat, the AC unit outside starts up and then stops after a minute or so. Sometimes shorter, sometimes longer. It's doing it on both zones. There is a flashing cool light on the honeywell z311 when this occurs. "Blinking when 45°F (7°C) DATS low limit mode has been reached."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.To troubleshoot the refill light issue, start by checking the float. Make sure it’s moving freely and not stuck in one position. If the float is stuck, try cleaning it with a soft cloth and some water. If the float is not the issue, check the sensor. Make sure it’s clean and free of any debris.HoneywellThe 7800 SERIES Relay Module should start the INITIATE sequence. Let the sequence advance to PILOT IGN (status is displayed on the Keyboard Display Module, if used), PILOT LED turns on, ignition spark should occur and the pilot should light. If the pilot ignites, the FLAME LED is energized. Go to step 7.

Resetting a Honeywell thermostat is simple and only takes a minute or two to complete. Either refer to your Honeywell control manual to reset it or follow the guide below that outl...

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.If the Honeywell Thermostat says "Cool On", set the temperature to the absolute lowest setting. After that, just re-install the Honeywell software and see if that changes anything. Tech Support 24/7. Ask an Appliance Repairman Online. Connect with the Expert via email, text or phone. Include photos, documents, and more.Honeywell FocusPRO 5000 User Manual View and Read online. Est. reading time 5 minutes. FocusPRO 5000 Thermostat manuals and instructions online. ... "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. 5-year limited warranty.In a matter of minutes, the air should kick on and the snowflake will remain solid. If the blinking does not stop, the next step is to switch the dial to “off.”. Perhaps the thermostat did not properly relay to the HVAC system. By moving the switch to “off” and then back to “cool,” you can start the system up again.Use the up and down buttons on your Honeywell thermostat to adjust the temperature to warmer or cooler. Try not to go below 68 degrees if you are trying to set the temperature to be cooler than 70 degrees. Between 65 and 68 degrees is where you start to run the risk of frozen coils, short circuits and overheating.. The limiting menu will allow you to adjust the high-temperature limit and cool ...Honeywell thermostat alert no power from heat cool system. If you have a Honeywell Thermostat Vision Pro 8000, you may experience some problems with it from time to time. Here are some tips for troubleshooting your Honeywell Thermostat Vision Pro 8000: 1. If the display is blank, make sure that the power is turned on.Generally, the device should stop blinking “cool on” after 5 minutes, signalling that cool air has been restored and that the HVAC system will continue functioning normally. Sometimes, this may also occur if your AC unit has lost power. Hence, there can be two main reasons why your Honeywell thermostat is blinking cool on:Generally, the device should stop blinking “cool on” after 5 minutes, signalling that cool air has been restored and that the HVAC system will continue functioning normally. Sometimes, this may also occur if your AC unit has lost power. Hence, there can be two main reasons why your Honeywell thermostat is blinking cool on:

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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 moreAnother common reason for the Honeywell thermostat flashing cool on is the system maintenance band, also known as the deadband, differential, or temperature swing. This delay, typically lasting a few minutes, is designed to assist your system and prevent wear. Many thermostat models utilize the maintenance band to prevent unnecessary strain on ...Understanding the Delay and Duration of "Cool On" Blinking; When you see the Honeywell thermostat "Cool On" blinking, it indicates a delay mode. This delay is designed to protect your heating and cooling equipment from short cycling, which can cause damage. The delay can last up to five minutes under normal operating conditions.Again, if it does not, this may be what's causing your Honeywell thermostat not heating up your living quarters. For heat pump systems, a faulty or badly wired changeover valve may also cause weak heating. In this case, your HVAC system may deliver chilled air though the thermostat is really calling for heat. 6.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 common issues that may arise. Remember to check the power source, ensure ...Heat/Cool/Auto/Off/Em Heat (see page 7) Fan setting Auto/On (see page 6) Current program period Wake/Leave/Return/Sleep (see pages 8-9) Set Clock/Day/Schedule (see pages 5 & 9) Current inside temperature Recovery (see page 15) Low battery warnings (see pages 16-17) System status Heat On/Cool On (If flashing, see p. 15) Auxiliary heat (Only for ...Honeywell zone panel turning on cool of instead of heat. Ask Question Asked 6 years, 5 months ago. Modified 6 years, 5 months ago. Viewed 5k times ... At that point the thermostat was blinking heat on, then solid heat on, then auxiliary heat came on and then the system would turn off. Now, it goes through the same sequence on the thermostat but ...To help clean the system, you can add a small amount of vinegar to the water tank and run the air cooler in evaporative cooling mode for 15 to 30 minutes; then, drain the tank of the vinegar water and refill with fresh, clean water, running on evaporative cooling mode for another 15 to 30 minutes. This will help to break down the calcium deposits.Sep 26, 2023 · 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 ...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.) ….

WIFI SMART COLOR THERMOSTAT Manual & Support. RTH9585WF1006/W, RTH9585WF1004/U. Download Manual. WIFI SMART COLOR THERMOSTAT Product Page.2. There's More Water Around the Base than In the Tank. Maybe you did refill your humidifier's tank, set it down, and then left for work. Maybe you then came home, moved the humidifier, turned it on, only to have it turn back off. You then looked at the tank and noticed it's empty.When a Honeywell thermostat blinks on and off, it can be a sign of a problem that requires attention. Understanding why the thermostat is blinking can help homeowners diagnose and fix the issue. Common Causes of Blinking. There are several common causes of a Honeywell thermostat blinking on and off. One possible cause is …The blinking "Cool On" message on a Honeywell thermostat display indicates that the system is restarting, batteries need replacing in the control panel, or a fault with the system. If the blinking persists for more than five minutes, contact a technician to perform diagnostics. The "Cool On" indicator message on a Honeywell thermostat ...All Honeywell thermostats, no matter the type of model, have a symbol showing you when the air conditioning is turned on. It can be a snowflake or it may say "cool on.". When the air conditioner is actually running it will be a steady symbol, but you may notice it flashing at times. This indicates that your HVAC system is in a delay mode.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 ...Jan 16, 2022 · Honeywell “cool on” blinking is basically an indicator that tells that the thermostat is under operational mode to cool the temperature. It takes around 5-7 minutes to completely operate. Just leave your thermostat for a couple of minutes and cool on flashing on thermostat would automatically go away.If not using Wi-Fi you can set the time/date as follows: 1. Page 12 2. Scroll to and select "Wi-Fi" 3. Tap "Choose Network" 4. Select a network Choose Wi-Fi Network Connect to the Honeywell Home App 1. Open the Menu 2. Tap "Connect App" 3. Follow the on-screen instructions Connect 1. Select thermostat model 2.Your trusted advisors, are here to unravel the mysteries and guide you through the intricacies of reset the Honeywell thermostat. Airdonerighthvac. Montgomery County PA 267-297-6791. Main Line PA 215-596-0334. Menu. Air Conditioning. ... Read More: Honeywell Thermostat Cool On Blinking How To Fix. Honeywell Thermostat Reset: A Reset Revolution. Honeywell cool on blinking, Wenn you're experiencing the Honeywell thermostat cool on flashing problem, there been some troubleshooting steps that can helps. Go this blog post for more info. ... If you're experiencing the Honeywell thermostat cool on wink problem, there are multiple troubleshooting steps that may help. Read this blog post for more info. 914-666-9100 ..., 3.7 Battery Replacement Indicator. An icon appears when the batteries need replacement. This icon will flash for 120 days, then the thermostat. will cut power to the heating/cooling unit. The icon disappears. once the batteries are replaced. After replacing the batteries, readjust the time and day (see section. 5.1)., Specific Honeywell thermostat models display a flashing 'heat on' message when they're signaling for heat but waiting for the system to start heating. This delay, known as delay mode or time off delay, safeguards your HVAC system from short cycling. Typically, this delay mode lasts 3-5 minutes. However, extended delays might indicate an ..., The "Cool On" message displayed concurrently with blinking means your Honeywell thermostat is calling for cool air but the system is not responding as expected. Essentially, the thermostat is doing its job of trying to activate cooling when the set temperature rises above the current room temperature., But, like any electronic device, they can encounter issues from time to time. One such issue is the “Cool On Blinking” error, which indicates a problem with the cooling system. 2. Common Issues with Honeywell Thermostat 2.1. Cool On Blinking. The Honeywell thermostat is flashing cool, which is a symbol that means there’s a problem. …, We're coming to the end of another Evil Week here at Lifehacker and, as usual, it's been loads of fun. Gaze into the face of evil with us for just a while longer, though. And whate..., Clean The Unit. This may seem like an unlikely and unnecessary solution, but it is not very uncommon either. If the inner components or the thermostat gets dirty or clogged for some reason, it can malfunction and the green light can have issues. So you can try cleaning up the unit properly., Honeywell “cool on” blinking is basically an indicator that tells that the thermostat is under operational mode to cool the temperature. It takes around 5-7 minutes to completely operate. Just leave your thermostat for a couple of minutes and cool on flashing on thermostat would automatically go away., If it still will not respond it probably took a power spike and will have to be replaced. If less than 5 years old Honeywell will provide a replacement. Take back where it was purchased from or contact Honeywell at number on link below., 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 ..., Check the Battery. If your the screen on your thermostat is blinking, it may just mean that the battery is low, and this is simply your unit's way of telling you to replace its batteries before it dies entirely. If this is the case, unscrew the thermostat from your wall and replace its batteries. If the unit continues to blink, you may have a ..., 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 ..., Just came home to a cold house. The Honeywell zone unit Hz311 is flashing purge. Then the heat tried kicking on. Purge not flashing, heat light is red, zone one green and zone 2 & 3 red. Igniter sound … read more, The display is flashing the word HEAT or COOL but no air is coming out of the vents or the air is not the right temperature. When the word HEAT or COOL flashes it indicates that the thermostat is telling the heating or cooling system to run. If the heating or cooling system is not running then there most likely is a problem within the system., The "Cool On" message displayed concurrently with blinking means your Honeywell thermostat is calling for cool air but the system is not responding as expected. Essentially, the thermostat is doing its job of trying to activate cooling when the set temperature rises above the current room temperature., I have a Honeywell thermostat. Flashing "cool on". About every 5 minutes the outside unit kicks on for a few seconds - Answered by a verified HVAC Technician ... The flashing is a time delay so that everytime it shuts off and back on we have a delay before outside comes back on.As soon as it comes on and starts making water float trips it again ..., The fix. If your thermostat is flashing cool on, wait for 5 minutes until the delay is over. Usually the thermostat delay should not take more than 5 minutes. However, if your thermostat is not blowing cold air after the delay period, there could be issues causing this problem. Let’s go to the next step to find out more., If the unit runs after 3 to 5 minutes of blinking (depending upon your settings) then the thermostat is waiting for the minimum off timer to expire. This is a reliability feature built into the thermostat to prevent the compressor from running for a short amount of time before turning off and then starting soon after again., My honeywell t4 pro series has a flashing "cool on" and I have used all of the suggestions and still the - Answered by a verified Home Improvement Expert ... My honeywell t4 pro series has a flashing "cool on" and I have used all of the suggestions and still the compressor does not turn on. Contractor's Assistant: How old is your Honeywell unit ..., Just a quick video showing you how to access the HVAC System Setting Switch. This is the switch which will allow you to change your HVAC over from Air Condi..., Wait for 10 seconds and turn the knob again to set it on the 'hot' setting for 10 seconds. Lastly, turn the knob to 'pilot' for 10 seconds. Restart the water heater and see whether the 7 times blinking issue is resolved or not. If the issue of the Honeywell water heater blinking 7 times is not resolved even after resetting the heater ..., Jun 10, 2022 · If you see a cool on blinking on your thermostat it means that there is fault in the thermostat wiring or the battery is dying. The Cool On message also appears on screen when AC gives a 5 minutes cooldown time to the compressor or if blower motor is not working properly. A dirty Air Filter can also be the reason for cool on blinking on thermostat., 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 your Honeywell thermostat is set to cool, but not working, the most likely cause is a problem with the wiring or power supply. Check that all wires are connected securely and that you have sufficient power (a working battery if it uses one). If everything appears normal, then you may need to reset the thermostat by pressing and holding down ..., Turn off your Honeywell Thermostat switch. Open the battery slot by pressing the door down and sliding it out. If this doesn't work, try inserting a coin or some similar object in the slot. Once you have opened the battery slot, slide the batteries out. Re-insert the batteries, but put them in a reversed position., Honeywell thermostats are one of the most popular thermostat models in the market today. These thermostats come with a "Cool On" indicator that indicates the status of the device. However, some users reported that their Honeywell thermostat keeps on blinking, and they are not able to set the desired temperature. If the same Honeywell ..., Jul 12, 2021 · On some occasions, a Honeywell thermostat can be in the wrong setting. For instance, if there was a recent power outage, this can cause your thermostat to switch to the ‘Setup’ mode. This can lead to the dreadful Honeywell cool on flashing problem. If you notice the system is in the ‘Setup’ mode, make the necessary change., 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., Jun 10, 2022 · If you see a cool on blinking on your thermostat it means that there is fault in the thermostat wiring or the battery is dying. The Cool On message also appears on screen when AC gives a 5 minutes cooldown time to the compressor or if blower motor is not working properly. A dirty Air Filter can also be the reason for cool on blinking on thermostat., Read also: New Honeywell Thermostat Blowing Hot Air On Cool. Malfunctioning condenser fan. If your Honeywell device has a red light flashing, here are a couple of things to check. First, make sure your AC condenser unit is turning on, and the fan is spinning. If the fan isn't spinning, it might mean there's an issue with the fan motor, and ..., Shopping >honeywell pro series heat on blinking OFF-78% Save on branded products with the best sales and offers on this page! Shop furniture, bedding, jewelry, clothing, shoes, electronics and more with free worldwide shipping!, 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.