Why Is My Thermostat Blank?

why is my thermostat blank

Is your home’s thermostat screen blank, flashing, or simply not working? While this can be scary, especially in the dead of winter or summer, it does not necessarily mean your HVAC system is shot. Whether you have a Trane thermostat, Honeywell, Carrier, or other name brand, there are often simple causes and steps you can take as a homeowner to troubleshoot your thermostat issue. 

Circuit Breaker Tripped

If your circuit breaker trips, due to a surge or other device drawing too much power, it can cut power to your thermostat causing the black screen. Simply flip your circuit breaker back on to see if this resolves your issue.

Batteries Are Dead

Not all thermostats run on your home’s power supply. If your thermostat screen goes blank and is powered by batteries, you should first try to replace these. 

Safety Switch Triggered

Some heating and cooling systems can trigger a safety switch, turning off the thermostat if any damage has been detected. In summer months a safety switch can be triggered when too much water builds up in your condensate pan. The switch may be flipped in a furnace if the unit becomes too hot and is subject to damage. If your home heating or cooling system’s safety switch was triggered, you should have it inspected promptly. 

Thermostat Needs to Be Replaced

Though thermostats can last upwards of 15 years, they do wear out and it could be time to replace it. A new and properly programmed thermostat can save up to 20% on energy costs! If your thermostat is quite old and you decide to replace it, be sure to have an HVAC professional install the new one. Carolina Comfort Air’s line of thermostats allow you to remotely raise and lower temperatures using your smartphone, receive system diagnostics, and stay up to date with maintenance alerts.

If you can’t pinpoint the cause of your blank thermostat screen, contact Carolina Comfort Air.  Our team will diagnose and fix the issue promptly. We are the premier HVAC installation and repair company serving Raleigh, Clayton, Fayetteville, Kinston, Jacksonville, Wilmington, Goldsboro, Morehead City, and surrounding areas!