No. It can be a blown fuse, bad fan motor switch, bad fan motor, bad fan motor resistor pack, or a loose or disconnected wire.
Your electric unit can blow fuses during the winter when you are running your heater for several reasons. The main reason would be that you have a faulty ground on your heater.
The heater valve could be failing to open for one reason or another.
You are low on coolant to the heater core.
Leak in heater core. Replace core.
An air conditioner blows out heat
The front expansion valve is clogged.
heater core possibly plugged and leaking
you would need to add freon
Because that's the way there made to blow hot airbecause it's not like a heater and it's not like something that makes it cold it blows any kind of air .
It doesn't really blow it out it just warms the cold air.
heater will not blow on a 1996 ford contour
if the heater does not blow out warm air change the setting.