Picture this: You walk up to your thermostat to adjust the temperature in your home, only to be greeted by a blank screen. You tap on it and press the buttons — still, nothing. Since your thermostat is the control center for your HVAC system, you can’t afford to go too long without it working properly.
What To Do if Your Honeywell Thermostat Screen Is Blank
Check the Batteries
Remove and replace the batteries from your Honeywell system as directed in the instructions for your specific model. The batteries may be within your battery compartment or control panel. Be careful to make sure they are correctly oriented within the thermostat. Once replaced, test the system for operation and responsiveness.
Check Your Breakers
If your breaker trips, go to your electrical panel and flip the breaker back into position. This should resolve any issues. However, if it continues to trip, it can indicate an electrical fault that a certified electrician should inspect.
Check the Safety Switch on Your HVAC System
Your compressor has a safety switch that monitors refrigerant pressure. If pressure falls too low or rises too high, it shuts the system down to protect the compressor from damage. It is typically located on the unit’s discharge line. Checking the safety switch should be done by a professional who can create the necessary conditions to test the switch function safely. However, if you have a manual switch, you can toggle this to reset the switch quickly and effectively.
Restart Your Honeywell Thermostats
Proper restarts require adherence to the following steps in order:
- Ensure the thermostat is switched “on.”
- Depress and hold the Menu button down for five seconds.
- Scroll through the menu and select “Reset.”
- Scroll to and select “Factory.”
- Confirm your selection by pressing “Yes.”
- Congratulations! Your thermostat should reset at this point.
Depend On ABC for Fast, Effective Solutions
At ABC Electrical and HVAC Service, our teams of dedicated HVAC professionals are happy to help you keep your Honeywell thermostat in prime condition. Our technicians can install, repair, replace, and maintain the comfort systems you depend on. Whether your Honeywell thermostat is brand new or 10 years old, we have the skills and institutional expertise required to help you stay comfortable throughout the year.
Contact ABC Plumbing, Sewer, Heating, Cooling and Electricat (888) 868-6667 to learn more about why we recommend Honeywell thermostats to our clients in Chicago and surrounding areas.
When you need heating or cooling service fast, you can count on ABC Plumbing, Sewer, Heating, Cooling and Electric!
FAQs
Display is Blank
What to do if your Honeywell thermostat is blank? ›
1. Blank Screen on Thermostat
- Check the Power Source: Ensure your thermostat is receiving power. Replace batteries if your model requires them or check the circuit breaker if it's hardwired.
- Inspect the Wiring: Over time, wiring can degrade. ...
- Reset Your Thermostat: Sometimes, a simple reset is all it takes.
The most common reasons for a blank thermostat screen are dead batteries, a power outage, a tripped circuit breaker, faulty wiring, or a failed thermostat. The screen will be completely dark and unresponsive when there is an issue with power reaching the thermostat.
How do I reset my Honeywell thermostat that won't turn on? ›
Power off the thermostat and remove the batteries. Put the batteries in the wrong way, with negative to positive and positive to negative. Wait ten seconds and put them back in the correct way. Your thermostat will be reset to factory settings.
Why would my thermostat have no power? ›
Faulty Wiring or Equipment: Bad wiring can prevent power from reaching your thermostat. It can also increase the risk of a short circuit or fire. Check whether the thermostat's wiring is frayed, broken, or installed incorrectly (the wires/terminals are usually color-coded).
How to tell if a Honeywell thermostat is bad? ›
A bad thermostat can be detected when your AC or furnace is not turning on, your HVAC systems are not turning off, the thermostat not responding, your HVAC system is short-cycling, the room temperature not matching the temperature displayed on the thermostat, and the programmed setting resetting themselves.
Do all Honeywell thermostats have batteries? ›
Generally, all Honeywell thermostats need AAA or AA alkaline batteries.
How do I fix an unresponsive Honeywell thermostat? ›
What To Do if Your Honeywell Thermostat Screen Is Blank
- Check the Batteries. Remove and replace the batteries from your Honeywell system as directed in the instructions for your specific model. ...
- Check Your Breakers. ...
- Check the Safety Switch on Your HVAC System. ...
- Restart Your Honeywell Thermostats.
No power: If the thermostat isn't working at all, there could be a power issue. Try checking the circuit breaker box or replacing the batteries. Bad wiring: The thermostat may be unresponsive if the wiring has gone bad. Remove the cover and check inside for loose, detached, or corroded wires.
How do I know if my thermostat is broken? ›
Signs of Thermostat Failure
- The Heater or AC Unit Won't Start. Wiring can shift and come loose over time. ...
- Air Conditioner/Furnace Run Continuously. ...
- The Thermostat Is Unresponsive. ...
- Different Temperatures Throughout the Home. ...
- The Interface Won't Respond.
If your thermostat is not working, change the batteries, make sure it is turned on, the thermostat is set to the correct mode, check the power supply and airflow.
How do you manually reset a thermostat? ›
There is usually a small reset button somewhere on the thermostat. Finding this button may require that the thermostat panel be removed and pressing this button may require something like a paperclip to push. Hold the reset button down for 5 seconds and the thermostat should reset.
Why is my Honeywell thermostat suddenly blank? ›
Display is Blank
If the screen is clear on your programmable thermostat, you may need to install new batteries. If that doesn't solve the trouble or you use a smart thermostat, there may be a wiring problem. Next, you should ensure the power is enabled for your furnace or air handler.
How to fix a blank thermostat? ›
Why Is My Thermostat Blank?
- Change the Batteries. ...
- Check the Circuit Breaker or Fuse Box. ...
- Examine Safety Switches. ...
- Perform a Quick Scan of Your Furnace. ...
- Have a Professional Check Your Wiring. ...
- Consider Replacing Your Thermostat.
If the thermostat clicks but the AC or furnace doesn't turn on, most often it's because the filter is clogged. A blocked filter will restrict airflow. The particles it's designed to trap eventually clog the filter media, and the system will be unable to generate heat or cool air.
Why is my Honeywell thermostat not turning on the AC? ›
Some possible solutions include resetting the thermostat to factory settings, checking the circuit breaker, replacing the air filter, checking the outdoor unit, checking the indoor unit, replacing the thermostat's batteries, and checking the connections and wiring for any damage.
Why is the thermostat not working? ›
No power: If the thermostat isn't working at all, there could be a power issue. Try checking the circuit breaker box or replacing the batteries. Bad wiring: The thermostat may be unresponsive if the wiring has gone bad. Remove the cover and check inside for loose, detached, or corroded wires.
