Heat/AC Controls

[Ricey244]

I'm having an issue with my 2014 RAM 1500 Tradesman with the 5.7. I've replaced (2) out of the (4) actuators behind the dash (recirc and feet/defrost) and I just recently replaced the control knob cluster out of a wrecked 2018 RAM 1500. Worked when I tested it prior to removal. But now I'm having the same problem. The 'location' control knob seems to not work. I can turn the knob and it won't change where the air is blowing. It almost defaults to the feet everytime. Once in a blue moon it will be defrost (almost every time I don't need it to be defrost). But I'm looking for some guidance.

I did replace the actuator that controls the feet/defrost with a OEM parts, but the other one was not replaced with OEM. It almost seems like a programming issue or like the control knob electronics get zapped or something. Anyone have this issue before and fix it for the long term?

 

[gnut]

No one replied? I have a 2500 but this sounds like a blend door

 

[GTyankee]

OEM Actuators are built differently than the after market actuators

for one thing, the after market actuators do not allow the climate control system to do a SELF CHECK
With OEM parts the system does a self check.

Also OEM actuators have a , ( i will call it a ), clutch override.
When the door inside of the climate control box, reaches its full motion, an aftermarket Actuator could beat itself until something breaks, where the OEM actuator ratchets & reverses, from what i understand.

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This company explains something about the OEM Actuators
What i mentioned as a Clutch, they state that there is a LIMIT Switch

A special note to our customers on door actuators:

A special note to our customers on door actuators: We have had several customers contact us with reports of a clicking noise while trying to change modes and a loss of airflow control. This clicking noise is the result of a failed door actuator; more specifically, it is because the teeth on the...

www.blenddoorusa.com