hi i need you to check the fluid on the carpet is it anti freeze or just water .
hi thanks for that info.
there are two probable causes firstly the water can leak into the vehicle through the air intake at the bulkhead and this is directly onto the fan motor.
secondly it could be the fan speed variable resistor.
what you need to do is remove the fan unit and test it to see if it spins manually then give it a 12volt feed and see if it spins up.
if it works fine then it is your resistor.