trane thermostat not cooling

Asking why is your Trane thermostat not cooling? You’ve come to the right place!

In most cases, your Trane thermostat will be restricted from cooling due to clogged filters or problems with the ACs of your household.

However, there are still some specifics that are related to the thermostat’ software and functions and we’ll take a look at them as well.

Your Trane thermostat isn’t cooling due to clogged air filters or restricted ACs in your home. An issue with the HVAC system will also stop the thermostat from cooling as well as a flipped safety switch. Incorrect thermostat settings may also be preventing the thermostat from cooling.

Let’s now review what the users have to say about this problem and why their thermostat is not cooling.

Why Is My Thermostat Not Cooling?

Since the Trane thermostat in your setup is only the control unit of the system, the cooling/heating functions are being operated by the device.

The execution and the cooling itself will be performed by the ACS. An issue with the HVAC system or the ACs will also prevent your thermostat from enabling the cooling.

Knowing that here’s what’s preventing your Trane thermostat from cooling:

1. The Safety Switch Is Flipped

When the safety switch is flipped, your HVAC system’s functionality will be temporarily suppressed.

2. Clogged Air Filter

A dusty or clogged air filter will also prevent your Trane thermostat from cooling normally.

3. Wrong Thermostat Settings

If you’ve configured the settings of your Trane thermostat incorrectly, it may be unable to cool for a certain amount of time.

4. AC Problem

If the power supply to your ACs is cut, the cooling you set on your Trane thermostat will not be executed.

5. Broken Thermostat

There’s a chance that your thermostat has started to malfunction and it no longer can control your HVAC system’s cooling and heating modes.

Those were the most frequently reported causes in regard to your Trane thermostat’s cooling mode. If you wish to solve the issue, keep reading to learn what are the best solutions and methods to approach the problem with.

How To Fix Trane Thermostat Not Cooling?

fix trane thermostat not cooling

With the causes now revealed, you should know better what is going on with your thermostat.

For your own sake, make sure to follow the order of our solutions and test your thermostat after each fix attempt.

Note: Ensure that all of your ACs that generally do the cooling in your household are connected to power sources before proceeding.

Here’s how to fix your Trane thermostat’s cooling in easy-to-follow solutions:

Solution #1 Manually Allow Cooling Mode On Trane

Chances are that you’re not setting the temperature settings on your Trane thermostat correctly.

If that’s the problem, you should manually configure the temperature of your device until your system starts cooling.

Here’s how to enable your Trane thermostat for cooling in easy steps:

  1. Go over to your Trane thermostat and press the “System Mode” button.
  2. From the available options, (Heating, Cooling, and Auto), choose Cooling.
  3. Wait for your Trane thermostat to operate the HVAC unit to start cooling.
Note: Keep in mind that if you keep the thermostat at Auto mode, this may be the reason why your cooling is not working.

Solution #2 Power Cycle The Thermostat

power cycle thermostat

If adjusting the temperature manually didn’t work, you should perform a power cycle on your thermostat to fix the issue.

The power cycle practically discharges the electricity out of your Trane thermostat and is done by ejecting and then inserting the batteries.

Here’s how to power cycle your Trane thermostat in easy steps:

  1. Go over to your Trane thermostat.
  2. Pull the front panel towards you.
  3. Expose the 3 batteries inside of your thermostat.
  4. Eject all of the three batteries inside of your thermostat.
  5. Standby for 5 minutes until the power cycle is complete.
  6. Re-attach the batteries and install the compartment back onto your thermostat.
  7. Test.
Note: Make sure to position the batteries with the appropriate sides facing the electric poles.

Solution #3 Clean HVAC Air Filters

One of the reasons that your Trane thermostat and HVAC system don’t cool is clogged air filters.

Over time, the air filters in your HVAC system setup will get full of dust, and dirt and may even get clogged, hence, cooling will become impossible.

Here’s how to clean your HVAC system’s air filters in easy steps:

  1. First, go over to your thermostat and disable any mode you’ve activated.
  2. Go to the HVAC system’s unit service panel.
  3. Open it to find the filter.
  4. Use running water to clean the filter completely.
  5. Allow your HVAC system’s air filter to dry completely before enabling the thermostat’s mode again.
Important: If you enable the system before the air filter has dried up completely, there may be a danger of short-circuit or shock.

Solution #4 Replace Trane Thermostat Batteries

replace batteries

There could be a problem with your Trane thermostat’s batteries. Thermostat units are well-known to be less functional as their batteries run out of charge, so replacing them may just solve the issue.

Here’s how to replace your Trane thermostat’s batteries in easy steps:

  1. Go over to your thermostat.
  2. Eject the front panel the same way you did in solution #2.
  3. Take out the 3 operating batteries.
  4. Grab a replacement set from the nearest store.
  5. Insert them into the thermostat.
  6. Test.
Notice: Only use a fresh set of batteries for your Trane thermostat. Don’t insert units that were previously operating on a different device.

Solution #5 Reset Trane Thermostat

trane thermostat reset

If none of our solutions solved the issue with your Trane thermostat so far, we suggest performing a factory reset on the device.

This will solve all software bugs or glitches that your thermostat has and fix the cooling mode if the fault is within the device in the first place.

Important: Your HVAC system MUST BE IDLE before resetting your Trane thermostat.

Here’s how to factory reset your Trane thermostat in easy steps:

  1. Go over to your household’s circuit breaker box.
  2. Locate the switch for the entire HVAC system.
  3. Flip the switch to the OFF side.
  4. Keep the switch flipped for approximately 30 seconds.
  5. Turn the switch back to the ON side.
  6. Your thermostat will now commence a boot session, after which it will be reset.

Keep in mind that all software configurations, settings, and modes your Trane thermostat previously had will now be reverted to factory defaults.

Re-apply all the settings you had on your thermostat and enable the cooling mode. Check if the issue is solved now.

Thus,to fix a Trane thermostat that won’t cool, power cycle the device and make sure all ACs are plugged into the power source. Flip off the safety switch in HVAC system and replace thermostat’s batteries.

Read Next: How To Fix Trane Thermostat Blank Screen?

Bottom Line:

Now that you know why the Trane thermostat not cooling, we hope that you will be successful in solving the problem with our trusty solutions.

If the warranty of your thermostat is still intact, consider delivering it to Trane so they could do a check-up on what’s gone wrong.

Nicole B