Causes of Car AC Blower Failure & How to Overcome It

Car AC blower that is dead or not turning on makes the temperature inside the vehicle feel hot, especially during dry weather, or when the car is stuck in traffic during the day.

Therefore, this AC blower is an important component. The function of the car AC blower is to cool the car's temperature so that the driver remains comfortable while driving.

For this reason, the AC blower must always be well maintained or serviced regularly to avoid car AC damage, or a dead blower.

Causes of Car AC Blower Dead/Not Turning On

There are several problems often encountered by car drivers regarding the blower. For example, the car AC blower suddenly stops working, does not turn on, sometimes turns off and sometimes on, keeps running, is noisy, or buzzes.

Here are some causes of a dead AC blower. Check them out below:

1. Damage to the Electrical System of the Car AC

Basically, the AC blower can operate because it is supported by power generated by the electrical system, so if the electrical system does not function properly or is weak, the blower can stop working. This problem is usually caused by several factors:

a. Broken Blower Resistor

A resistor is an arrangement of electrical resistance that functions to regulate the speed of the blower. The blower speed itself depends on the amount of electricity flowing to the resistor.

The blower will spin faster if the electric flow to the resistor is small, and the car AC blower fan will not spin if the electric flow to the resistor is large. Therefore, if the resistor is broken, the blower will stop and not spin.

b. Damage to the Blower Relay

What causes the car AC to completely stop? One of them is due to the relay. The relay functions as a component that separates low and high power electricity.

So if the relay is damaged, there will be no electric current flowing to the motor when the switch is activated.

c. Blown Fuse

Why does the blower suddenly stop? It could be due to a blown fuse. The blower fuse functions as a safety for the electric current flowing to the blower.

Usually, a blown fuse occurs due to a surge of electric current that is too high. It is advisable to always check the condition of the fuse because most AC blowers stop working due to a blown fuse.

2. Damage to the Switch Panel

The next cause of the car AC blower not turning on is due to a problem with the switch panel. Damage to the switch panel can be indicated by damage to the switch.

If you cannot fix it yourself, you can go to a workshop or the nearest Daihatsu dealer. Any problems with your car will be assisted and repaired by experts in the automotive field.

3. Damage to the AC Blower Motor

The next cause of the AC blower stopping is damage to the blower motor. Essentially, the blower is an electric fan that has a driving component in the form of a dynamo.

Thus, the electric current from the electrical system is converted into rotational energy by the dynamo. So, if the dynamo or blower motor is damaged, the blower cannot spin and will stop working.

How to Handle a Dead AC Blower

If you already know some of the causes of a dead car AC blower, you can handle it in the following ways.

1. Perform Routine Self-Maintenance

To avoid a dead AC blower, an easy step you can take is to perform routine maintenance.

You can maintain the car AC by cleaning the blower by removing and taking out the blower installed in the car.

Then clean the dirt or dust that sticks to the blower fan with a soft brush, spray the blower with water, then dry it and reinstall it as before. Additionally, check the switch to see if it is still functioning.

2. Perform Periodic Service at a Workshop

The next step is to visit and consult directly with an expert technician at the workshop.

This can be done if the condition of the blower is too severe and cannot turn on even after you have handled it.

So if there is damage to the blower components, such as the carbon brush, magnet, or dynamo coil, the technician can replace them with new components.

That is how to address a dead car AC blower and what causes it. Hopefully, the above review can make you more routine in maintaining the AC blower so that your driving experience feels comfortable.

You can also take it to a workshop or the nearest Daihatsu dealer for routine maintenance or replacement of your car's AC blower.

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