Honeywell rth230b thermostats stop working when the breaker trips, a fuse blows, and the batteries die.

Honeywell thermostat won't go below 70. Test system by increasing the temperature. Clogged air filters cause a honeywell rth230b to stop working entirely or. Reasons why honeywell thermostat won’t go below 70 degrees.

It won't hurt nothing setting the temperature lower than 68. Try not to go below 68 degrees if you are trying to set the. If you press and hold the menu button, a reset option will appear.

If your thermostat falls under the honeywell 4000 series,. Apart from the temperature limiter, there are a few other things that could prevent your thermostat from going below a temperature. Verify that the thermostat is switched to cool mode and has a cooling set point below the room temperature reading.

Check if there is loose. Check for issues with the indoor ac filter. Set the switch on your thermostat to “off.”.

So before i tell you the stat has failed lets check a few things. Then, take a look at the steps below to reset your thermostat to the default settings. Why your honeywell thermostat won’t go below 68.

Test the system by lowering the temperature. One of the most common causes of a thermostat not reaching the set temperature is a damaged or broken sensor. To get the honeywell thermostat to go below 70 degrees you will need to set the cooling limiter to a lower temperature.