Could be several things.
If the blower works on A/C or vent it is good.
If the Heater core is not leaking (due to corrosion, which is a common problem) it is probably good.
Could just be the Temperature cable is off the the blower door not allowing air to pass over the heater core.
Just to name a few..........
Check to see if you are getting power to blower motor - if so replace blower motor If not check fuse, switch, resistor pack.
The blower in my 2001 Honda Civic did not stop working.
2004 ford expedition front blower not working
Depends on the year. You could try the resistor first since it is the cheapest. If not that, then check the fuses, relays and wiring to the control head. Then lastly, change the motor.
Defective blower motor resistor pack.
If you are not getting any cool air, the compressor may need recharging or replacing. You will need to call a repairman.
Thermostat possibly stuck open or heater control valve broken. Now if you mean the blower motor has stopped working, check the fuse, blower motor itself, or the blower motor resistor pack.
Try checking the blower motor fuse, it may be blown. Also, check the wiring harness for good contact to motor connection.Last, replace the blower motor , ~$30 and 20 minutes to replace it, watch for AC lines when working near them. Good luck!!
Underneath the glovebox. Have to remove 3 torx screws on it and then the wiring connector. Kinda tricky to install too!!
Blown fuse, defective blower motor resistor pack, defective blower motor, or loose or disconnected wiring.
You must remove the glove compartment door to access the blower motor. On top of the blower motor will be wires connecting to the top. Release the connecter and let it dangle. Then using a screwdriver, remove the blower resistor on top, where the wires connected, and replace with a new resistor.
Check to see if you are getting power to the blower motor - if so motor is defective if not problem in circuitry to blower motor