Want this question answered?
Remove Glove Box. Fuses are located between fan housing and heater box. there are two fuses and a relay. Remove Glove Box. Fuses are located between fan housing and heater box. there are two fuses and a relay.
Need make, model and year of car.
Why does your ac and heater fan turn off and on
First check the fuses then check your blower fan then check the blend door and blend door actuator and then the control panel
If you don't have power to your heater or ac fan, it could be a fuse or a relay. You should check your owner's manual to determine which fuse or relay affects your fan.
Perhaps a bad fan motor? Perhaps a bad fan resistor? Perhaps a plugged evaporator coil?
It mite not be a fuse have you checked the vacume hoses that come from intake manifold this can cause the fan not to blow.
You may need to replace the heater\ac control switch, it may be stuck in the off position which would prevent the blower and the ac compressor from turning on.
One reason why an AC heater fan will not work on a Mazda 3 is that the fan is burned out. It will have to be replaced. However, first check to make sure that you have not simply blown a fuse.
There might be a separate fuse for the fan and the windows, located in the fusebox inside the car.
2 things. There is a fuse behind the glove box compartment. Remove the glove box and search around. I have found it not where it was suppose to be in there. 2nd, there is a resistor in the in the fan compartment for speed control. Sometimes this burns out and the fan wont run. If you turn on the system for AC on full then check the C pump in the engine compartment. If it engaged then the panel switches are probably OK.
Perhaps a bad fan resistor