Honeywell Thermostat Screen Not Responding [SOLVED] – Let’s Fix It

So you’re headed to work, and the morning routine takes a turn for the worse when the Thermostat screen on your Honeywell thermostat decides to stop responding. The reason why this is such a common problem with most people is that it’s naturally annoying that your thermostat has decided to suddenly stop working.

One of the most common issues that is reported by several users is that their Honeywell thermostat screen is not responding. This issue may occur in the case of any Honeywell programmable thermostat whether it is a wireless or a wired device. When you are unable to operate your thermostat, follow these instructions to resolve this issue.

The Honeywell thermostat is a smart home system, which is used to control the temperature in the house automatically. It is a programmable thermostat, which has the ability to learn users’ behavior. This programmable thermostat can be controlled using a remote control, mobile app, and also through voice command.

There are several common troubleshooting methods that you can try yourself before calling a professional.

You can quickly troubleshoot the thermostat by removing the battery and running a self-test or rebooting it. You can also inspect the wires and touch points around the thermostat to ensure they are in good working order.

When your Honeywell thermostat fails to function well, it’s painful. It’s also confusing — which aims to make things worse. This can be especially true if you’re the kind of person who’s adamant about temperature and humidity control.

Honeywell Thermostat Screen Not Responding – Troubleshoot And Diagnosis

Honeywell Thermostat Screen Not Responding

You don’t need to live with a thermostat that doesn’t work. The great news is there are easy fixes that can help fix your smart thermostat. Usually, the problem is an issue with the electricity in your system. And it’s really just a quick fix.

1. Loose Wiring Connection

You don’t even have to fix the thermostat itself — simply address the wiring behind it. After removing the back plate, you should check for any fraying or loose wiring. If you see any, simply tape up the wires with electrical tape and your thermostat will be good as new!

Check the wires connecting the thermostat to your HVAC system. Do you see any loose, frayed wires? If so, you can use electrical tape to patch them up.

Old houses are old. There’s no getting around it. But, even ones that weren’t built before the thermostat and have been well taken care of, may have interior electrical wiring that is at risk of fraying or corroding. This can cause problems with your thermostat and lead to an unresponsive screen or a blank display altogether.

Infuriating as it may be, this is a very common problem. However, there is an immediate solution available to you. You can correct this problem with a new thermostat wire harness or replacement thermostat. Once you’ve replaced the thermostat wire harness or thermostat itself, you’ll be back up and running.

2. Power Disruption

Your thermostat is the brain that controls the heating, ventilation, and air conditioning (HVAC) system in your home — you’re going to want it to work well! But sometimes, the Honeywell thermostat display turns on and off frequently. When this occurs, your thermostat might be wired directly into the electrical system of your home. And if this sounds like you, you may see a blank screen occasionally.

If you see a blank screen on your smart thermostat when the device is wired into your home’s electrical system, the reason is related to the device itself rather than a problem with your house’s electricity.

If the power isn’t reaching your unit or there is an issue with the wiring in your home, you should check for a tripped circuit breaker. If it is tripped, you can reset it to power on your unit again. You should also get assistance from an electrician if there is a larger issue with wiring.

You’ll need to call an HVAC technician for a loose connection, or else the power won’t reach your unit. An electrician may also inspect the wires and help you out. These solutions probably won’t work. The problem is within the thermostat. In this case, you’ll need to replace it with a new one. We know it’s sad, but that’s just how it is sometimes.

If your breaker trips, this could be a sign of more serious issues in your wiring. The problem could potentially lead to an electrical fire. We recommend you contact an expert to inspect the wiring in your home.

3. Battery Is Low

Many people forget to think about their thermostat batteries. Honeywell thermostats themselves aren’t the only thing that need replacing. The batteries that power the thermostats should be replaced every year, but most people forget about them. If your thermostat begins to fail you with an error message, it’s a good idea to check for its battery status.

If your HVAC system stops running, listen to it. If you notice a “Battery Low” light on your thermostat, or if it fails to run for more than a few minutes at a time — and you haven’t replaced the batteries in your thermostat recently — you most likely have a low battery in thermostat.

If your thermostat loses power, or if it indicates that its batteries are dying, replace them immediately — otherwise you risk a decrease in temperature. Replace both batteries by following the instructions in your user manual.

4. Reseat the Touchscreen Cable

In order to get inside the thermostat, remove the faceplate by firmly pulling it apart and moving it straight up and off of the device. Underneath the cover, you will find four screws. Remove these with a screwdriver and set them aside. Be careful not to strip the screws.

To fix the display, first make sure to pull the cable slightly up and back. The other end goes into the socket where the thermostat should be plugged in. Make sure it clicks to ensure it is properly seated. Once you plug it in, the screen should turn back on. However, these fragile cables can easily break, so be extra careful when pulling them up.

5. Faulty Thermostat

Thermostats generally stop working after a certain period of time — even if you take good care of it. Most devices will begin to show errors like incorrect temperature readings or rapid cycling when they start dying. The most advanced models can even die off with just one error, so be sure to replace your thermostat as soon as possible!

If the screen isn’t responding, the thermostat has failed and should be replaced by a heating and cooling professional.

If you have an older thermostat, it may not be saving you as much as you think. Most models begin to lose their accuracy around 10 years, which means a lot of wasted energy. Upgrading your thermostat can lead to significant savings on your monthly bills and make the most out of your HVAC unit.

With new technology being released, there are tons of benefits of upgrading to a smart thermostat.

Frequently Asked Questions (FAQs)

What To Do When Honeywell Thermostat Goes Blank

There are many reasons thermostats go out. The most simple of which is the low batteries. Other than that, the best place to start when troubleshooting a blank thermostat screen is checking your power source. If it’s wired into the house’s electrical system, check for any loose connections or faulty wires that may be causing your screen to go blank.

If there’s no power going to your thermostat, you can check the breakers in your house. If the breakers aren’t tripped, there may be a problem with the wires inside your walls.

One way to test what is wrong with your thermostat is by unplugging it and plugging it back in — if your screen turns on, it could be a problem with the wiring.

How Do I Fix An Unresponsive Honeywell Thermostat?

First, make sure that your honeywell thermostat is wall mounted and bracketed to the wall and that it is properly wired. If you have already checked these two things, you can purchase an R-311A battery and replace the current battery. When installing the new battery, put it in backward and twist it to the left for the correct direction.

Other users experiencing this issue might not have any luck with a simple unplugging of their Honeywell thermostat. They can instead use a low-voltage probe to test the thermostat’s terminals to see if they are getting the right power.

Final Thoughts

Even in the best products, there are likely to be bugs. For example, a thermostat screen may not respond. This is usually a minor issue that can easily be resolved by the customer.

For example, if you’re using your thermostat and notice that it’s not responding, you may need to restart the thermostat by removing it from the wall and then plugging it back in. Then follow the on-screen instructions.

Leave a Comment

Your email address will not be published.

Scroll to Top