No Power To Thermostat? | Try These Troubleshooting Tips

What To Look At When There Is No Power To Thermostat?

Power Supply

First and foremost, you want to make sure your thermostat has power. To check this, head to your home's circuit breaker. Since your thermostat is powered by your electrical system, the power switch can be found in your circuit breaker box. In the event your home loses power, that could trip your circuit breaker, resulting in a power loss to your thermostat. To troubleshoot this, head over to your circuit breaker and ensure the breaker powering your thermostat is turned on. If it’s off, try resetting it.

Dead Batteries

No power to thermostat could also be caused by old batteries. When it comes to the controls and display on your thermostat, these are typically powered by batteries. Over time, these will wear out and stop working. If it has been a while since you changed these batteries, this could be your problem. Simply adding a fresh set can fix the issue within seconds. To locate these batteries in your thermostat, remove the cover of the device. If you need assistance, refer to your thermostat’s owner's manual for specific instructions for swapping out batteries.

Low Voltage

While batteries are used to power several thermostat models, some get their power by the 24 volts from the transformer. This is located in your HVAC equipment. While this technology tends to work very effectively, some HVAC systems produce low voltage, which can actually cause the screen on your thermostat to go completely blank.

If you’re dealing with this problem, go to your circuit breaker to see if you tripped a breaker. If it needs to be reset, you may notice it might trip again. If this happens, contact an HVAC professional as this may be a more serious problem.

Another reason for no power to thermostat could be a bad transformer or faulty wiring from the system to the transformer. Pests and corrosion can easily lead to wiring issues, so check your system’s wires to make sure everything looks correct. If you notice a bad transformer or wiring problem, experts encourage hiring a professional.

Fuse Issue

If your thermostat is in the on position and you’re still not receiving any power, there could be a fuse problem. To diagnose this, remove the thermostat’s cover and search for a fuse. A fuse looks like a glass tube with metal pieces on the end. To inspect the fuse, find the filament that runs through the device. It looks like a small string or wire that runs through the length of the fuse. If this piece appears broken, replace the fuse right away. Luckily, most fuses are pretty affordable and can be found at the majority of home improvement stores

Thermostat Settings

No power to thermostat can also result from the settings on your thermostat device. Since there are many controls and selections you can make, you could have changed the settings by mistake. That said, be sure to check your thermostat’s settings to ensure everything is set correctly. This problem is especially common with touchscreen thermostats where it’s very possible to hit something on accident. Some people have fingers that aren’t the right size for making adjustments on a thermostat, which can easily lead to hitting something by mistake. To check if this is the problem, head over to your thermostat and make sure the settings look correct.

Broken Equipment

If your thermostat has no power, it could, unfortunately, mean this equipment has seen the end of its life. Over time, thermostats wear out and parts break. If you have an old and aging thermostat, it may be time for a replacement. As the thermostats of today have tons of useful capabilities, now is a great time to upgrade. You can even purchase a programmable thermostat that allows you to schedule when your thermostat powers on and off. Additionally, some models even allow you to change the indoor temperature from your smartphone. If your thermostat doesn't seem to be powering on, upgrading your equipment could be the perfect solution. There are a wide variety of options to choose from, so reach out to a professional to decide which thermostat is right for your needs.

As a thermostat helps you and your family stay comfortable all year long, taking care of any device issues should be a top priority. Be sure to follow these troubleshooting tips to restore power to this important equipment.