Hvac Blend Door Actuator Reset

If there is still a problem the actuator for the temp blend door may have failed.

Hvac blend door actuator reset.

Turn ignition key to the on position and turn on the hvac system. First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or. Scan the hvac for codes. Tips for replacing the automotive hvac actuators.

For manual systems it does not matter where the a c controls are set but if you feel the need to do something turn the blower switch on i prefer speed 3 and set the temperature. That can result in cold air when you command heat and vice versa. The topic of how to perform the actuator recalibration procedure on chevrolet gmc and cadillac trucks and suvs has become an ever increasing topic of discussion. Open hood bonnet for the rhd guys and locate fuse 15 in the fuse box next to the battery.

Blend door actuator motor calibration. The blend and mode doors on late model chrysler vehicles are driven by dc servo motors. If you would like to leave a donation here is a link. 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.

An actuator can go bad in of two ways. Learn how to reset the hvac actuator with acdelco. If the motors get out of synchronization the control head doesn t know where they are. Ignition off pull the hvac ecas fuse for 10 seconds reinstall and start vehicle without touching any controls wait 40 seconds for the control module to self calibrate.

It can also screw up where the air blows.