Air Con Intake Switches by itself.

[WONWON]

Recently my Nissan's air con has issue, the air flow intake will alternate between fresh air intake and recirculation even though I have it set at  recirculation. the problem with this of course is that smell/dust from the outside will flow in and temperature will increase due to hot air intake from outside.

 

See this video.

http://www.youtube.c...h?v=lf1XX9g8ktg

 

 

Anyone had this problem before, what was the issue? And what was the remedy and cost?

 

My ride has  3 buttons Clean/ Fresh Air Inatke/Recirculation.

 

From what I read, most likely it's the cooling coil sensor or the compressor or A/C control PCB, but I'm sure most workshop will

just say compressor, that'll cost a bomb to replace. So I'm asking around to see if anyone has encountered

this problem before. I saw a few posting on similar problem, but no mention of the  real cause, solution and cost.

 

 

Thanks

[WONWON]

Turns out to be the compressor. After the replacement, the air inflow doesn't switch by itself anymore.

So Tan Chong was correct. But I still find it hard to comprehend, because the air con was still cold
just that the air intake switches by itself.