What is fan mode on heater?
What is fan mode on heater? The fan setting on your thermostat controls your HVAC's system blower. The blower helps circulate hot or cold air throughout your home until the temperature on the thermostat is reached. ON means that the fan is constantly on and blowing air when your HVAC system is not heating or cooling air. Why does my heater only work on highest setting? The resistor gives you the slower speeds and has a thermal breaker that is blown now. It’s not the blower. It is the blower motor resistor pack that is designed to cut the voltage...