Yes, It`s on the inside of the blower compartment cover panel.
A fan or cooler relay is used in electrical furnace to change the blower speed to the blank speed for cooling
If you have a 2 stage furnace (hi fire & lo fire) then the blower will run on lo speed in lo fire & hi speed in hi fire and in AC mode. If it`s a single stage furnace lo speed for heat and hi speed for cooling.
low
Can't give you a diagram but the blower speed resistor is under the hood, on the passenger side firewall not far from the blower motor in plain sight.
For commercial units, partstown.com or 3wire.com (in resources)
It depends on the duct system. Each furnace has a recommended outlet temperature. To get the proper airflow for that temperature the duct system has to be properly designed. If properly designed the speed would typically be low.
The blower motor fuse protects the blower motor electrical circuit. The blower motor relay operates only the high speed function of the blower motor. The blower motor speed resistor operates the lower speed functions of the blower motor.
The blower motor speed resistor is burned out. The high speed function bypasses the resistor. The speed resistor is generally located near to the blower motor.
That depends entirely on the capacity of the inverter. There are inverters with sufficient capacity to operate a 3/4 HP blower motor; a 1,000 watt inverter should have adequate capacity to provide extended power to the blower motor.
if your blower is working on low and medium speed then it's not a fuse it is the blower switch
Check the fuse. Check the blower speed resistor. Check the blower speed control switch.
the older furnaces would draw 700 watts plus depending on the size of the blower. the newer furnaces with variable speed blowers can draw as little as 100 watts