Most modern thermostats will have a clearly marked reset button inside the panel. It's usually small and recessed, so you might need a pointed object like a paperclip to press it. For those wondering specifically how to reset air conditioner thermostat models, the process is generally the same.
Any time you are having an issue with heating and cooling units, such as after a sudden power failure or after your children have had 'control' of the system while you've been away, resetting the thermostat should be the first thing you try when attempting to rectify HVAC system issues.
To reset a non-programmable digital thermostat, you'll need to take the face-off and hold the reset button for five seconds. You can also try removing the batteries for five seconds. Both of these methods should result in a reset thermostat.
Turn off your air conditioning system. Locate the reset button on the thermostat's circuit board. Use a soft bristle brush to gently remove any dust or debris that may have accumulated on the thermostat components. Press and hold the reset button for 5-10 seconds until the display goes blank.
If your thermostat is set to a temperature regulation mode or has an energy-saving program enabled, it might reset to conserve energy.
For Honeywell thermostat models without a reset button, you can either find the reset option in the on-screen menus, or you can remove it from the wall and take out the batteries.
For Latest Honeywell Scanners:
Use the single bar code 'DEFALT' command to reset the device. Note: This selection erases all settings and resets the scanner to the original factory defaults.
To reset the device so that the pump priming cycle can be entered, press and hold the reset button until the light emitting diode (LED) flashes (approximately 30 seconds).
Resetting your Honeywell Thermostat can fix common issues like inaccurate temperature readings, scheduling problems, and unresponsive buttons.
A few things may go wrong that cause a thermostat to turn unresponsive: Loss of direct connection to the air handler or compressor. There are separate wires from the thermostat to the parts of the air conditioner, and if one of them frays or breaks, the AC may not turn on (or may not turn off).
In AC systems, the air conditioner reset button is on the outside unit's lower edge, typically close to the ground. Some models have the reset button located behind the service panel, which may require tools to remove. Reset buttons are usually red or yellow with a clear “reset” label.
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. Inspect for any loose connections or signs of wear.
Check the thermostat
You should check if it's been set to the correct temperature and also make sure it's set to “cool”. If the AC settings are not right, it won't turn on. You can also check if the batteries in the thermostat are fresh and replace them if needed.
First, check your filters and coils for dirt and debris that may be impeding airflow. Once you've cleaned the filters and coils, run the air conditioner with just the fan so that the ice accumulation can melt off. If the AC still doesn't blow cold air, it could be that refrigerant levels are too low.
To reset mechanical thermostats, simply turn off the thermostat and flip the circuit breaker. This can be done by going to the breaker panel and turning off the appropriate breaker switch for 30 seconds. After turning the breaker back on, turn the thermostat back on and the thermostat should be reset.
If you have a manual thermostat, setting the temperature on your Honeywell thermostat is simple. All you need to do is to press the up and down buttons to set the temperature. The temperature you set will stay until you change the temperature again.
If you are cranking up your air conditioner but still not feeling the cool air, you may need to reset your thermostat. If the thermostat on your AC unit is not functioning properly, it will not be able to detect the temperature, and you will never get cool no matter how much you turn the dials.
On average, a thermostat takes around 5 to 10 minutes to reset. However, the exact time may vary depending on the specific model and brand of the thermostat. During the reset process, the thermostat goes through a rebooting sequence, which includes shutting down and restarting.