Honeywell Thermostat Flashing Cool On: Quick Fix

Your Honeywell thermostat will send you a message “cool on,” which means your AC will push some cool air into your house. But if your thermostat is flashing for an extended period, something is wrong, and you must fix that. To fix this problem, have a look at the below steps.

How To Fix Honeywell Thermostat Flashing Cool On?

As we stated earlier, it is a prevalent issue. If your thermostat is blinking cool and goes on and stops after 5 minutes, and then the air is restored, there is nothing to worry about. But if it lasts for a more extended period, try to fix this problem. This message can also pop up if your AC losses power.

These are some ways to fix your thermostat:

1. Turn Your Thermostat Down To The Lowest Temperature:

• The first step is to do the coldest setting on the thermostat.
• Then check again that it is turned to the minimum temperature.
• After that, check your fan settings. It should be on ‘Auto.’
• After making adjustments wait for 1 hour; if you feel cold air, it’s okay. If not, then try the next step below.

2.Check The Mode On Your Thermostat

This is very important to investigate because if your thermostat switches to the ‘setup’ mode, it will create a flashing problem. Your Honeywell thermostat can sometimes switch to the ‘setup’ mode, so you must look after this.

Also, you need to check your thermostat’s time to update it on time. So check this thing regularly.

Change your thermostat battery.

It is essential to check from time to time whether your thermostat needs to change the battery or not. Check the ‘low battery indicator’ message; if yes, change your battery.

Usually, when batteries need to be changed, it will show a ‘cool on’ message.

Make sure your AC unit has power.

3. Check Air Filter

You need to check the air filters whether it is dirty or not. If it is dirty, clean it because this can cause a decrease in the durability of your AC unit. Also, this can lead to a high electricity/energy bill.

4. Examine AC Coils

The dirty AC coils will also cause cool-on flashing trouble; just like filters, you must check them. They can bring dirt into them with time, making a barrier to proper airflow. Bringing dirt on coils will lead to a massive problem in the whole system.

5. Reset your Thermostat

Another way is to reset it. We all know that if any device is not working well, we must reset it. Just like that, you can reset your thermostat to make it work again.

By doing this, it can vanish all the records, so it’s better to note down all of them.

6.Ensure Your AC Unit Has Power

After checking your thermostat, it could be an excellent decision to check your AC power if you feel it is okay. Maybe there will be a problem with your AC.

Check all the wiring, power supplies, and sockets also. Appropriately check that your AC is getting the proper power supply.

You can also check the circuit breaker and blow a fuse, and it could be easier for you to find the actual problem.

Note: Don’t forget to check your AC filters if needed. Change them also.

Fixing Honeywell Thermostat Flashing Cool On But No AC:

what to do if the Honeywell thermostat flashes cool on but no AC? You can do various techniques to fix this, but some are mentioned in the beginning. The rest of the techniques we will explain here.

Setting up your thermostat to the lowest temperature.

You can follow the steps we have mentioned above.

1.Change The Batteries

For this also, you can follow the same steps mentioned above.

2.Reset your Thermostat

We have mentioned the same steps above to fix this problem. If you can’t fix the problem with the above techniques, don’t worry, we have another technique too.

3.Check The Mode On Your Thermostat

This may vary according to the brand and model so try to analyze before you fix the problem with this technique.

• First of all, click on the ‘mode’ option. Then the heat mode will appear on the screen.
• Then fix your temperature according to your wants.
• After fixing your heat mode again, click on mode. Your cold mode will appear.
• Fix your temperature according to your wants again. Now after fixing the heat and cold mode. Click on the mode option again to turn the device off. Now you are done.

Flashing Cool On And Return:

Fixing Honeywell thermostat flashing cool on And return can be tricky. For flashing cool on the message, you can fix that through the above techniques. For the return message, you can fix this by the below steps. There are four segments- wake, leave, return and sleep. Wake is a segment when you are waking in the morning.

Leave means you are not occupying your house. Return means you are now getting back home and sleeping for the sleeping period.

Now, how to fix the ‘return’ problem in your thermostat.

1. The very first step is to set the date and time. For this, click on the set button, date and time will start displaying. Now set them with the help of arrow buttons. Now press set to finish.
2. Now, the next step is to set the weekdays. For this, click on the Settings button and then set the schedule. Now set the Monday-Friday wake-up schedule, click next, then set the temperature. Now you are done.
3. After this, you have to set the weekend now. Follow the same steps as mentioned above. You need to take care according to the option you have chosen.
4. Now click on the done button; if you want to make changes, you can do that again by clicking on the settings button.

Honeywell Thermostat Th5110d1006 Flashing Cool On:

You can try to fix this by the above techniques, but the resetting technique will differ from model to model. Let’s understand the resetting procedure. Like other machines and gadgets, we know it may need to be reset if it’s not working correctly.

1. First of all, turn off the power supply of your thermostat.
2. Now, take out the batteries and insert them in the wrong way, negative on the optimistic on the opposing side.
3. Wait for 5-6 seconds, take them out, and correctly set the batteries. Now you are done, your thermostat will start working again.

Note: Resetting your thermostat will vanish all the programming; it will be an excellent suggestion to remember them.

Final Talk

This article is a brief description of the excellent segment in the thermostat. People usually can’t find a proper tutorial, but we tried to solve this problem here. I hope this article will help you solve your thermostat problem.