What Does A Hvac Heater Blend Door Actuator Do

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.

What does a hvac heater blend door actuator do.

There are other names such as temperature door etc. A certain method to move a blend door a couple of systems would take more than a little time and effort to control. 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. And what causes them to mess up.

There usually is an actuator motor. These days it s electrically driven actuator. These obstructions can include. Motors modules that accomplish the job.

Auto heat built in heating systems have pretty much been standard equipment on most automobiles since the 1950s and 1960s. To operate the heater control valve or a vacuum unit pulling a. The electric motor that powers the actuator controls the flow and blend of hot and cold air within the cabin by opening and closing the vent doors. Blend door actuator in some car models manufactured before 1980 the blend door might have been activated by metal cables which were directly connected to the lever of temperature control on the dash.

If the door is stuck the heater plenum with need to be removed and the problem resolved before installing the new unit. The blend door blends or mixes the hot air with the cold air. In this video i explain how to replace the a c blend door actuator. Hope y all enjoy this video and let me know what y all t.

Sometimes the fix needs recalibration and sometimes you need to replace the part that is broken. A somewhat common problem in vehicles a few years old the heat and air system in your vehicle may be the victim of a faulty blend door actuator. A blend door is short for blend air door. A blend door actuator controls the temperature and the flow of the air in a car.

Long gone are the cables and rods jutting out of the firewall. If you cannot move the blend door an obstruction has gotten in the way of the door movement which will make the new actuator fail. An hvac heater blend door actuator is what moves the blend door to divert warm or cool air into differ ent passages within the hvac system and keep the passenger cabin at the desired temperature.