Description: Modern cars mostly have a Blend door actuator problem, and people become frustrated. A Faulty Car AC blend door actuator can be uncomfortable for driving. Here you know the Top 6 blend door actuator problem with solution.
Common Symptom Blend Door Actuator
Why is the driver’s Side AC not as Cold as the Passenger Side? In this article, I will break down the main cause, how to troubleshoot the problem, and when you should call a professional technician
The most common reason is a faulty Blend Door Actuator. This blend door actuator sometimes time stuck in heat mode, in which case the AC flap internally opens on the heat side and the AC does not cool effectively.
Low Refrigerant Levels
In that case most common problem is low refrigerant quantity; low refrigerant is system pressure is not building enough, which is why the passenger side ac was cool but the driver side was not cool air coming. Sometimes the refrigerant quantity is low, also the Blend Door Actuator is not working.
Blend Door Actuator Issues
Modern cars have so many blend door motor actuators, like cooler to heater, face mode to leg mode, or bi-level mode. If the driver side cooler to heater Blend Door Actuator is stuck in heater mode, condition that time, only hot air or warm air comes in the driver side vent.
Dual Zone Climate Control Malfunction
If your car model has a climate control feature that has a problem in ac software, some glitch coming due to an imbalance blend door actuator, you will do reprogramming easily to solve this issue. Every car model’s owner’s manual mentions this point; you can check.
Clogged or Dirty Vents
Sometimes the AC vent on the driver side has some dirt particles and clogs the vent linkage due to warm air coming; at that time, you want to clean only with air pressure. If the blower motor has more dust, most of the time this dust is directly transferred to the vent, and AC MUSTY smell comes to the cabin
How to Diagnose Blend Door Actuator
There I will mention 3 steps, if you follow these steps, you can easily solve the problem. Most vehicle Blend Door Actuators are stuck due to a plastic piece or tissue paper, and the Blend Door Actuator is clicking.
Listen for Unusual Noises
While yoy on the AC switch, if you hear any kind of ticking, clicking, buzzing noise, that means the air conditioner’s step motor or the Blend door actuator is stuck internally and needs to be replaced with this item. Make sure which blend door actuator is faulty, temperature control or mode control, and mention the blend door actuator location.
Test Both Sides Separately
Next, turn on your car’s AC with full blower speed and check that all vents’ air pressure is are same or different and feel the temperature difference. If one side Blend Door Actuator is sometimes stuck or a single position becomes stuck, then you feel the temperature difference especially is 22 set in the control panel and after 25 set.
Error Codes Blend Door Actuator
Now, modern cars generate error codes; you can use an OBD 2 (ON BOARD DIAGNOSTIC SCAN TOOL) scanner and check the error code. DTC code is coming specific blend door actuator.
When to Call a Mechanic
If you are not find out to the pinpoint, then you call a certified technician. They can check this
1) Check the refrigerant quantity and pressure test. Do a recovery and recharge AC gas once.
2) Blend Door Actuator has any fault, he will replace it.
3)Calibration or reprogramming of your car’s dual-zone HVAC system of Blend Door Actuator.
4) Inspect also the air duct vent have any damage or clogged by dust.
Preventing AC Temperature Imbalance in the Future
1) Every service, your car’s AC system checks refrigerant, cleans ac filter, and cleans the condenser and AC control panel settings.
2)Use your car’s AC in winter also for lubricating the system.
3)Clean your car’s cabin air filter every service, 10000-15000 miles.
4)Avoid refrigerant fill from can can-type bottle (if you don’t know) always use top-up refrigerant by machine.
5) Check the Radiator fans not working. If not working, check the fuse and the relay location in the fuse box and engine compartment.
FAQ ( Blend Door Actuator)
Q) Why is my car blowing heat on one side and cold on the other?
A) The reason is low refrigerant, stuck blend door actuator, or the AC system needs to be reprogrammed; these are the main possible causes.
Q) Why is only one side of my AC working in my car?
A) The most likely chance is that the Blend door actuator is stuck in heat mode or open half position, mixing heat and cold air; both need to replace the Blend Door Actuator.
Q) How to fix AC in car blowing hot air on one side?
A) The best option is you do AC refrigerant recovery and recharge once, after checking the Blend door actuator on the driver side.
Q) AC blows cold on driver side hot on passenger side?
A) Possible cause is that the servomotor or the Blend door actuator has a fault, or the ac refrigerant quantity is low due to some leakage in the system.
