Wondering Honeywell thermostat not showing numbers? Let’s discover more together!
We understand how frustrating it is for you when your Honeywell thermostat just stops showing numbers and displays a blank screen.
Don’t worry, if you are having the same issue, continue reading since in this guide we’ll be unwrapping all of the essential and important factors!
When the Honeywell thermostat does not display numbers begin by checking for power or battery issues, tripped circuit breaker, or wiring faults with the device.
In addition, all users need to inspect the safety switch and reset the device before drawing conclusions!
So, without further delay, let’s start troubleshooting…
Honeywell Thermostat Numbers Not Showing? – 1 Minute Fix!
If your Honeywell thermostat is not showing numbers, you can try all of the following ways!
1. Tighten The Thermostat Panel Display
The Honeywell thermostat operates when the panel is properly tightened and pressed against its base.
Simply check and ensure that your thermostat’s panel is properly seated on its base, as the thermostat will not work and won’t display the numbers if the panel is not embedded.
Here is how to tighten the Honeywell thermostat panel display:
- Turn off the power to the Honeywell thermostat.
- Turn off the electricity from the circuit breaker.
- Pull out the thermostat display from the base.
- Use a screwdriver to tighten the panel screws.
- Reattach the thermostat back onto its wall mount.
- Double-check to ensure that it’s securely attached.
- Then flip over the circuit breaker back on to test.
- Turn on the thermostat and check the display.
In case you’re still unable to see any numbers, proceed with the next solution!
2. Increase the Brightness Level
If your Honeywell thermostat is directly exposed to sunlight, or if there is too much light in the room, then that’s why you are unable to see the numbers on the display.
Simply increase the brightness of your thermostat to be able to see the numbers on the display even when it’s shiny.
Note: The brightness settings for Honeywell thermostats may vary between models!
Here is how to increase the Honeywell thermostat brightness level:
- Head over to the Honeywell thermostat.
- Navigate to the thermostat Menu option.
- Go to the Preferences using arrow keys.
- Then navigate to the Display settings.
- Next, adjust the brightness level option.
- Tip: Use the arrow keys to the higher level.
- When ready, press Done to save the changes.
- Check for the numbers on the display screen…
Note: In case the steps made no difference, press the button several times to increase the brightness as much as possible.
3. Replace The Thermostat Batteries
Sometimes the Honeywell thermostat not showing numbers but AC working due to a power fault with the batteries.
So, if you haven’t changed the batteries in your thermostat in a while, perhaps now would be the best time to insert or at least order a fresh set to exclude this possibility!
- Typically, Honeywell thermostats use AA or AAA alkaline batteries!
Info: The battery compartment can be found on the back of the device and on some models there are screws that have to be undone.
Replacing the batteries should be done once a year!
4. Check The Circuit Breaker
When the thermostat loses power from the HVAC system, it usually stops displaying numbers on the display.
Therefore, the best next step is to check your home HVAC circuit breakers and make sure to set the ON position, because if it is tripped, then that’s why the numbers are gone.
Here is how to check the HVAC circuit breaker:
- Turn off the thermostat and circuit breaker.
- Head over to your home HVAC system.
- Inspect the wire connectors of the thermostat.
- Check whether all of them are connected.
- Then wait for 3 minutes to reset the power.
- Turn ON the HVAC circuit breaker and test.
In case the numbers still won’t show on the thermostat, proceed with the next solution!
5. Adjust the Safety Switch!
In case the Honeywell thermostat numbers not showing, check for the safety switches’ positions.
Sometimes the safety switches will automatically shut down the switch for safety reasons when they detect a problem with the compressor or any other components.
To begin with, turn off the power to your HVAC system and find the safety switches in the HVAC system.
Then check the switches for any signs of cracks, breaks, or rust, and if possible test the switches using a Multimeter for Continuity by connecting their probes.
- If any of the switches are damaged or not functioning properly, replace them.
- If the switches are operational, be sure to set the switches to the ON position.
When ready, check whether the numbers on the Honeywell thermostat are back, and in case not, simply keep reading further!
6. Reset the Honeywell Thermostat
Most of the time, resetting the Honeywell thermostat to factory settings will resolve all issues with the device.
So, if your Honeywell thermostat is still not showing numbers on the display, then the best course of action would be to perform a factory restoration!
Alert: A reset on the Honeywell thermostat will clear all its settings and configuration!
Here is how to reset the Honeywell thermostat:
- Turn off the Honeywell thermostat.
- Open the faceplate of the thermostat.
- Take out the batteries of the device.
- Re-insert both batteries in the opposite direction.
- Wait for 10 seconds and position them back.
- Lastly, reprogram the desired schedule.
Info: In case the steps didn’t make any effect, test by inserting the batteries wrongfully on purpose, to perform a power circulation and trigger a reset.
7. Check the Thermostat’s Wiring!
It is possible that your Honeywell thermostat has a wiring issue and that’s why it is still not showing numbers even though it has a fresh set of batteries.
The solution is simple and all you need to do is inspect whether the wiring with the thermostat is intact, by following a guide!
Here is how to check the Honeywell thermostat wiring connection:
- Turn off the thermostat Power Supply from the HVAC Circuit Breaker.
- Remove the thermostat Display Screen from the base.
- Tip: Take a picture of the thermostat’s current wiring. (Optional)
- Disconnect all the wires from the connectors by taking them out.
- Next, inspect the wire strips and ensure they are fine and have no fault.
- Then, reconnect the Rh and Rc wires to the R-named connector in the base.
- Also, reconnect the other wires of the thermostat to the appropriate terminals.
- Then ensure that all the wires in the base are properly set up.
- Lastly, put back the thermostat screen properly back in its base.
Tip: You can also use your thermostat user manual for more guidance on wiring connection!
8. Inspect Furnace Door & Switch!
The next important step is to check whether the HVAC furnace door is fully closed and that the switch is clicking. This is because the Honeywell thermostat is very sensitive and will not start working normally until the door is fully closed.
Start by turning off the power to the furnace and locate the furnace door from the front or side of the furnace.
The next step is to check the furnace door for any cracks, warping, or damage, which might be the reason why the Honeywell thermostat is not working correctly.
Furnace Door Switch?
The next step is to inspect and test whether the door switch is working by pushing, and in case the switch does not depress or pop back out, it has to be replaced.
You can discover a door switch online to replace your setup, but don’t forget to verify the compatibility before buying!
Note: In case you’re confident that the door is fully latching, test if the Honeywell thermostat is showing numbers!
Need More Help?
Like other devices, the Honeywell thermostat loses its functionality over time. In case this guide didn’t help and the thermostat is still not showing numbers perhaps it is best to seek some help!
Tip: You can reach out to Honeywell Customer Support for further assistance or contact the local supplier to acquire a replacement with the warranty!
Whenever your Honeywell thermostat not showing numbers, be sure that the panel is closed, the brightness is set to high, and the batteries are fresh.
In addition, test the circuit breaker as well as the safety switches, and reset the Honeywell thermostat device.
For more helpful guides such as this one, follow our blog!
Finn Wheatley holds a Master’s Degree in Computer Science from UCL, London. He helped small data science consultancy firms, helping large corporations to grow their data capabilities, deploy advanced machine learning-based analytics and troubleshoot tech-related issues. Check out more about him here.