How to Check AC Thermostat?

Hi there, I live in Mumbai, and the temperature outside has started to get hotter and hotter as the summer season is just a month away. So, before the summer set in, I decided to check the AC thermostat to see if it was working properly or not. Thus, I can help you learn how to check thermostat on AC unit. Keep reading to know all the details.

How do I Test My AC Thermostat?

Here are a few ways through which you can test the thermostat. 

1. A very simple way to test the thermostat is to turn it on and check if the room cools or not. If you observe that the room temperature hasn’t dropped or is consistent, then there is an issue with your thermostat.

2. Another thing you can do is check the battery of the thermostat. If you see that the battery is low, pull out the thermostat off the wall. Do this by sliding the thermostat upwards and removing it from the mounting plate. Open the casing and replace the old batteries with new ones.

3. Use a thermometer by keeping it in the room and turning on the AC. Wait for a while, and then check the temperature on the thermometer. It should ideally be lower than the time you started. If that is not the case, there is a problem with the thermostat.

This is how to check if AC thermostat is working. I hope this helps you.

If you are wondering how to check AC thermostat, I suggest you use these basic troubleshooting techniques to determine if your air conditioner has failed or the thermostat is to blame before calling an air-conditioning and heating repairman when your air conditioner won't turn on in the middle of the summer. 

How to check window AC thermostat?

Your issue might simply be a dead battery in a programmable thermostat or a thermostat that has reached the end of its useful life. Follow the steps ahead to understand how to check thermostat.

1. Verify the thermostat switches. Check to see if the thermostat is set to "on." Ensure that it is configured to "cool" or "A/C." On a programmable thermostat, look for override programmes that might be the cause of the A/C not responding.

2. If necessary, remove the old cells from programmable thermostats. To make sure the thermostat is powered, swap out the old batteries with new ones.

3. Place a helper near the furnace while you stand by the thermostat. Set the thermostat to the "heat" position. If necessary, use a pair of walkie-talkies to connect with the thermostat and the furnace. A furnace reacts to a thermostat right away, but an air conditioner might not.

4. Slowly raise the thermostat's temperature setting. Tell your assistant that you are turning up the heat. The thermostat ought to click. The furnace should emit a sound to let your helper know it has received a command from the thermostat to turn on. The thermostat needs to be replaced if your helper cannot detect the thermostat making a sound.

5. Cut the power to the furnace. Snap off the thermostat's cover to reveal the wires. You are not at risk for an electric shock because the thermostat sends signals to the furnace and air conditioner via a 24-volt low-voltage transformer, but it never hurts to turn off the power to the appliance.

6. Use your smartphone or a digital camera to take a picture of the thermostat's wire connections. The terminal screws with the letters "W" and "R" or "Rh" loosened.

7. Both the cable from the "R" or "Rh" termination screw and the cable from the "W" terminal screw should be removed. To get around the thermostat, connect the end of these two wires together. Reset the furnace breaker, then wait for the furnace to roar. The thermostat needs to be replaced if your assistant notices a sound coming from the furnace.

This is the process of

how to check AC thermostat.