the resistor bank most likely open circuit there is a small heat fuse in it that often blows you have to replace the unit it is mounted in the air duct after the fan
There is a little motor, a fan, and coils. These coils heat up with the motor causing heat that heat is then pushed by the fan into the direction you want it.
the motor for your heat and A/C interior fan
No power to fan, fan motor is burned out, fan motor has seized up, control circuit for fan not working.
See if power is getting to fan motor--connect a test light and turn on A/C or defroster--if getting power to motor. Then motor is bad. If not getting power to fan-- Check fuse Check relay See if power is getting to fan motor--connect a test light and turn on A/C or defroster--if getting power to motor. Then motor is bad. If not getting power to fan-- Check fuse Check relay
Temperature senor broke, fan motor quit, fan motor not getting power.
Loose connection? on fan motor or heater control Bad fan motor?
No
Fan motor? Check fuse, Check resistor pack at fan motor Check coolant level
The fan in a convector is usually a single-phase induction motor.
If fan is supplied DC power of quantum for which its motor is desigened, it will work properly.
Most likely it is a fan motor that is pulling too much amperage. I'd start with the fan motor and/or the fan motor resistor.
Believe if you check your fuse boxes in your car manual it should provide you with the whereabout of of your resitor and fuses which run the fan. I did the same with my car and ubfortunateoy all were good except for my blower motor which was found to be no good. Costly but better to have heat and a/c than nothing to clear fogged windows, cold and heat.