It’s a hot day and you want the air conditioner to cool your home, but it doesn’t work. If your home’s air conditioner won’t work, it is the first place you should start checking. The Emerson Smart Thermostat is the center of a home’s cooling system. If there is any trouble with the thermostat, it could affect the air conditioner and cause more problems than it already has. 

Common A/C problems are faulty thermostats or incorrect settings of the thermostat. Fortunately, it is easy to diagnose and fix, so you don’t need an expensive service call. Keep reading to find out how. But, if you are uncomfortable fixing it by yourself, you can call for a professional HVAC repair service

How Do I Know My Thermostat Has Gone Bad?

Like other HVAC equipment, the thermostat doesn’t have a specific lifespan, but the device can last about 10 years depending on the model and type of thermostat. Overtime, the system would slowly malfunction because of wiring issues and ageing. 

Here, we would show you guides on how to know if your thermostat is bad and how to troubleshoot this situation.

Thermostat Screen Isn’t Responding

If your thermostat screen isn’t displaying anything, it means that it’s probably broken, which can be because you have trouble setting your preferred temperature. To quickly fix, you can factory reset the system or turn it off and on. If this method improves nothing, simply call the Emerson thermostat support team.

The Air Conditioner Stops Turning On

A wiring fault can cause a disruption of electrical signals being sent to your home’s cooling system. If that’s the case, you could open the thermostat cover and check if all wires are connected firmly in their respective positions. If it doesn’t work, it’s time to call a professional HVAC technician.

Air Conditioner Runs Continuously and Won’t Turn Off

Is your air conditioner running constantly without turning off? It either means the wire is wearing thin or the thermostat wasn’t adjusted. You could simplify, calibrate the thermostat and check the wiring. You could also seek help from an A/C specialist. 

Irregular Temperature in the House

The uneven temperature in the house is a sign of a faulty thermostat. The air conditioner could turn on and off, affecting the cooling in the house. One part of the house would be cool, while other parts would be hot. The solution is for you to check the thermostat settings or contact the HVAC technician.  

Unresponsive System

Keep on eye if the thermostat isn’t responding. If the unit isn’t able to adjust temperature or show any response, it shows that it is broken down and it needs immediate attention. 

How to Troubleshoot Your Emerson Smart Thermostat

Tech repairing a thermostat

If you noticed the problems on your thermostat, here are steps to troubleshoot your bad thermostat.

Test Thermostat

If your air conditioner doesn’t turn on, proceed through the following steps to test the thermostat:

  1. Don’t use the app, and work directly on the thermostat. Setting it to Cool mode.
  2. Increase the set factor to a few degrees above the room temperature.
  3. You should hear a soft click sound from the thermostat and the background would glow blue or the thermostat will show “Cooling” under the set temperature. 
  4. It would take up to 5 minutes for it to cool.
  5. If you can hear the cooling trying to come on, raise the temperature above room temperature.
  6. You would hear another soft sound and the thermostat would no longer display the “Cooling” or the background would switch to grey. 

Now, let’s take a look at resting the thermostat.

Rest the Smart Thermostat

The smart thermostat is the latest model that includes features for smart home integrations. It allows you to use voice commands with Alexa, Siri, and Google assistant. 

It’s designed to save house electricity with the flexible schedule, remote access and geo fencing.

Allows checking your user manual before resetting your smart thermostat, for it has the best advice. 

Check Batteries

The thermostat might malfunction due to low batteries. To check your battery, here are the steps:

  1. Pull the thermostat at the bottom to remove it from the plate.
  2. Flip it over and remove the 2 AA batteries 
  3. Wait a few minutes till the screen goes blank
  4. Insert new 2 AA batteries, then reinsert it back on the wall plate.

Check the battery icon and if the bar is full, you can retry the thermostat test operation. 

WiFi Reset

Resting your thermostat using the Wi-Fi method, it is best to check Emerson’s service. 

The process requires the app being installed either on an android or an IOS. Therefore, it is best to visit their site and check their advice to prevent issues.

You can check their detailed instructions, by clicking here.

Schedule Reset

If you would want to schedule your thermostat reset, you could either use the app or work on the system directly. 

To do so directly, you can follow these steps:

  1. Press on Menu
  2. Select on Schedule 
  3. Check if the schedule is on
  4. Make your preferred changes 
  5. Click on Save, and your schedule would be changed.

On the app, you can reset the schedule but it requires the Wi-Fi reset, which depends if you installed the app on an android or IOS. 

You can check Emerson’s site for more information, guiding you how to reset schedules on the app.

Check Wiring Connections

Confirm each wire is labeled and installed properly. If the thermostat still isn’t working, it’s time to pick your phone and call a professional. They could test and identify which wire requires repairing. 

You can check out their detailed instructions on installing the wires and follow their guide here.


If you would like to learn more about your Emerson Smart Thermostat, take a look at this article.