Trane Thermostat Touch Screen Not Working (Blank Screen Fix)

If you are dealing with a trane thermostat touch screen that’s not working,  not responding  or has a bank screen, then this is a perfect troubleshooting guide for you. 

The most likely cause for Trane thermostat blank screens are dead batteries or problems with the power source. To fix the problem, try replacing the batteries if your thermostat uses batteries. If you can access the circuit breaker, try flipping it on and off to power cycle your thermostat and get it running again.

If your trane thermostat is displaying a blank white screen like in the image above, you need to power cycle your thermostat.

How to power cycle to your thermostat:

Step 1: Ensure your HVAC system is not running.  If it is, please turn it off.

Step 2: Locate the switch for your thermostat in the breaker box.

Step 3: Flip the switch to the OFF position for 20-30 seconds.

Step 4: Return the switch to the ON position

However if neither of the above solve the problem, there could be other issues causing this problem, let’s look at these issues and how to fix them.

Trane thermostat blank screen causes

Possible causefix
Dead batteriesReplace batteries
POwer interruptionReset circuit Breaker
Issues with WiringInspect wiring
Blown fuseReplace 3 amp fuse
Open float switchDrain water

Dead batteries

This is the most common reason your Trane thermostat screen would go blank. If you have not changed your thermostat batteries in a while, consider changing them. You would normally see a low battery warning.

If, by any chance, you missed the low battery warning (which happens quite often), your thermostat would eventually fail to turn on.

Get a good renowned thermostat such as Energizer, Panasonic, Philips, or any other reputable battery brand.

Power Issues

If low batteries are not an issue or if your thermostat doesn’t use a battery but is powered by the power source, you can power cycle your thermostat by following the steps I have given above.

Issues with thermostat wiring

Once you have verified that low batteries or power sources are not the issue, then inspect your Trane wiring or check the manual.

If one or more wires are not connected or are loosely connected, it can cut power to your thermostat and cause it to go blank.

Ensure that the C common and the R wire are securely and tightly connected.

Red also: Carrier infinity thermostat blank screen

Blown fuses 

After you have verified that the wiring is okay and there are no loosely connected wires, but the problem persists, you may have blown fuses.

To diagnose blown fuses, get a multimeter to check the voltage. If you do, check the red wire on the thermostat terminal strip inside the blower service compartment to ground (any bare sheet metal on the furnace will work for that). 

The second thing to check is the low-voltage fuse inside the air handler. It’s usually stuck right on the board, and it will be a purple 3 amp fuse.

You’ll need to replace blown fuses to bring back your system to run again.

Tripped float switch /Open furnace door

Another reason for your Trane thermostat blank screen would be a tripped float switch. A float switch prevents flooding by cutting power to your HVAC system when water reaches a certain level.

A float switch would be attached directly to the PVC drain line coming out of the unit, and it will have 2 wires running back inside the air handler/furnace.

The first thing to check would be if the drain is stopped up or if excess water has collected. Drain all the water and check if your system turns on again.

Read also: How to fix lennox thermostat blank screen


Trane thermostat touch screen not responding

Physical Damage to the Touch Screen

Accidental drops, impacts, or exposure to moisture can lead to physical damage to the touch screen.

 Cracks, scratches, or other forms of damage can interfere with the touch screen’s functionality, making it difficult or impossible to register touch inputs properly.

Firmware or Software Glitches 

Sometimes, touch screen issues can arise due to firmware or software glitches within the thermostat’s system. 

These glitches can cause the touch screen to freeze, lag, or become unresponsive. It’s important  to check for any available updates or patches provided by Trane to fix these issues.

Final thoughts

To wrap up, that is all you need to know about the possible causes for a Trane thermostat touch screen not working or one with a blank screen.

I hope you have fixed the problem after reading this guide. If the problem persists, it’s probably because the thermostat itself is defective and may need a replacement.

Before you consider getting a new thermostat, get a second opinion from Trane support.

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