Honeywell Thermostat Blank Screen? [7 Fixes]

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Did you just come back home and discover that your Honeywell thermostat screen is blank? It is not uncommon to have a Honeywell thermostat blank screen, and, in many cases, the issue can be fixed by yourself before calling in HVAC professionals. 

Shortly in this guide, we’ll be looking at what causes the Honeywell thermostat blank screen and what you can do to fix the issue before calling in professionals. Doing it yourself could definitely save you some bucks.

Also read: Honeywell Thermostat Heat Not Working [7 Fixes]

Troubleshooting A Honeywell Thermostat Blank Screen

Thermostat blank screen
A man checking a thermostat

When dealing with a Honeywell thermostat with no display issue, you will want to find out if your thermostat is connected to power. So, the following are the things you need to check first when you are experiencing a thermostat no display issue:

1. Is Your Thermostat Connected to Power?

The first thing you want to do is find out if your thermostat is connected to power. Most thermostats rely on power from your home’s electrical supply.

If your thermostat’s screen goes completely blank, no power reaches the unit. Two things could prevent power from reaching your thermostat. These include:

  • Loose wires
  •  Tripped circuit breaker for your thermostat

Check for any tripped circuit breakers for your unit and if it is non, try looking out for loose wires connecting to your thermostat.

2. Dead Batteries

If you are using one of the thermostats that rely on batteries for power, it’s high time you take a closer look at your batteries because they might be dead.

Usually, Honeywell thermostats will flash a low battery warning message 1-2 months before they are completely dead. But in cases where you have been away from home, you might have missed that message, and the best thing to do now could be to swap your dead thermostat batteries with new ones.

3. Is Your Furnace Door Closed Properly?

If your thermostat relies on power from your home’s electricity supply, you should check if the furnace door is open. Most furnaces have door switches that cut off power when the door is open or not properly closed.

A furnace door that is not closed correctly could cut the power supply to your thermostat. If everything is fine with your furnace door and your Honeywell thermostat screen is blank, another issue could be causing the problem. Let’s look at the next step of our troubleshooting.

Also read: Honeywell Thermostat Flashing “Cool On” [7 Easy Fixes]

4. Loose Connections Could Be Why Your Honeywell Thermostat Screen Is Blank

Loose wires in the wiring of your HVAC system could be the reason for your Honeywell thermostat blank screen. An HVAC system is made up of several complex wires, and for the system to work properly, each of these wires has to be correctly and firmly connected.

If there are any loose connections, some components of your heating system will simply not turn on. Make sure to check if all wires are firmly and properly connected to your thermostat.

5. Is Your Thermostat Wiring OK?

You may be looking for a loose wire connection when the problem lies with a wrong or incomplete thermostat wiring.  Incomplete thermostat wiring could be the reason for your Honeywell thermostat no display issue.

Make sure that the C-wire is connected. This wire supplies power to your thermostat. You should also make sure all other wires are connected. You can learn more about thermostat wiring here.

 6. Blown Out Fuse Could Cause Honeywell Thermostat No Display

 Honeywell thermostats come with built-in fuses.  The fuses will blow out when there are power surges to protect your unit from damage. When this happens, power will be cut off to your thermostat, which could cause your Honeywell thermostat blanks screen issue.

Check if there are blown-out fuses. Replacing a blown-out fuse is an easy task that you can carry out yourself.

7. Consider Replacing Your Thermostat

After you have tried all the tips in this article and your thermostat won’t display a thing, maybe consider replacing your thermostat. Typically, thermostats have a lifespan of about 10 years.

If you notice your thermostat demanding attention now and then, it could be a sign that it served its purpose in your home and needs replacement.  Not sure how to replace your thermostat? Its best to call in a local HVAC guy who can recommend what kind of thermostat is compatible with your HVAC system.

FAQs

How can I fix a Honeywell thermostat screen not responding?

A Honeywell thermostat screen not responding could be frustrating, especially when you need to adjust your home’s temperature. But this issue can easily be sorted out by resetting your thermostat. You can reset your thermostat by doing any of the following:

For the Honeywell 1000 and 2000 series (Battery powered ones), you can reset your thermostat by

  • First cut off power by tripping the circuit breaker
  • Then, remove the batteries from your thermostat and insert them back in reverse position for about 5 seconds.
  • Put the batteries back in the correct order and switch on the circuit breaker.

For any other honey thermostat models, you can either press the menu button for 5 seconds or follow the instructions.

But the best way to do it is to go through your user manual.

Read also: Furnace Will Not Turn on With Thermostat

How can I fix Honeywell thermostat touch screen not working?

The reason for your Honeywell thermostat touch screen not working could be faulty batteries. Flat-out batteries will cause many issues with your thermostat. Try replacing the batteries and starting your thermostat again.

Final Thought

We hope that this guide has been helpful. So, the next time you notice your Honeywell thermostat screen is blank. Try out these tips; they could save you time and possibly some bucks.

Resources

https://www.cnet.com/home/smart-home/whats-a-c-wire-and-why-should-you-care/

https://www.youtube.com/watch?v=XxJ-7BpsJ34

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