What Does A Ac Heater Blend Door Actuator Do

However if it moves smoothly buy a new blend door actuator from the dealer or auto parts store.

What does a ac heater blend door actuator do.

First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or. As of 2013 the air conditioning and heating systems in many automobiles share a lot of elements such as the duct work under the dash the control of temperature on the dash s face. A blend door moves to vary the amount of air passing through the vehicle s heater core. An actuator can become faulty if the plastic gear set turns out to be fragile and it breaks.

As the blend door open or closes to the heat or cold position it opposes the flow of air coming from the blower motor and makes a change in the intensity of the air noise. This commonly causes problems in most car s air conditioner and. As autos had more and more labor saving devices added as standard equipment heater and air conditioning controls could be operated with less effort when automakers started installing blend door actuators. There s a chance the mode or blend door actuator may be good but the door or linkage is binding so check it before you replace the actuator photo above.

Blend actuator helps combined cool and warm air to produce the proper desired temperature. An actuator can go bad in of two ways. A blend door actuator is linked to an air control door pivot found on the last drive of the unit. If your vehicle is only releasing cold air or if you are not able to change the airflow it may be because of a malfunctioning actuator.

The blend door is also referred to by some car makers as an air mix door. Sometimes the fix needs recalibration and sometimes you need to replace the part that is broken. An actuator moves the blend door automatically. A blend door actuator is made up of an electric motor that turns a plastic gear set in one direction or another which is connected to an air control door pivot at the final drive of the unit.

Mode actuator determines where the air will blow out of such as the floor vents the top vents or the defrosting vents that blow onto your windows and windshield. Blend door and blend door actuator. With the combination of both systems the blend door actuator controls the conditioned air s temperature and leads it to the needed location. If you can t hear this change in air noise intensity there is a problem with the blend door actuator the blend door the climate control set or the circuit connecting them.

Both terms mean the same. If the door binds take it to a pro for replacement. A sure way to move the blend door some systems took more than a little effort to operate. A plastic gear set is frequently rotated from one side to another by the electric motor.

What is a blend door. The blend door is controlled by a blend door actuator which can be a cable or an electric motor.