What Does A Ac Heater Blend Door Actuator Do

Blend door and blend door actuator.

What does a ac heater blend door actuator do.

This commonly causes problems in most car s air conditioner and. However if it moves smoothly buy a new blend door actuator from the dealer or auto parts store. 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. The blend door is also referred to by some car makers as an air mix door.

Both terms mean the same. If the door binds take it to a pro for replacement. Blend actuator helps combined cool and warm air to produce the proper desired temperature. 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.

A blend door moves to vary the amount of air passing through the vehicle s heater core. 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. 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. Sometimes the fix needs recalibration and sometimes you need to replace the part that is broken.

A sure way to move the blend door some systems took more than a little effort to operate. 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. Heater control actuator regulates flow of hot air when heater is engaged. A plastic gear set is frequently rotated from one side to another by the electric motor.

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. 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. The blend door is controlled by a blend door actuator which can be a cable or an electric motor. With the combination of both systems the blend door actuator controls the conditioned air s temperature and leads it to the needed location.

First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or. An actuator moves the blend door automatically. A blend door actuator is linked to an air control door pivot found on the last drive of the unit. An actuator can go bad in of two ways.

Install it and test the operation. What is a blend door.