How To Set Honeywell Thermostat Temperature To Heat. When a sensor is the issue, the thermostat’s reading of the surrounding temperature will be incorrect. The first step to fixing your thermostat's heat setting is to press the up arrow and the button which says switch to permanent hold. this will manually change the setting of your thermostat to a higher temperature than the outdoors.

How to turn on honeywell thermostat heater. Set the temperature lower than usual to turn on the air conditioner. How do i adjust a thermostat so that the heat reaches the set temperature?