Oscillating ventilation sound
#1
Oscillating ventilation sound
Hi all,
I experience an oscillating ventilation sound. Every couple seconds pitch goes up, followed by going down shortly after. It stops if I put temp control all the way up or down.
AC switched off. AC control unit recently serviced.
I'd imagine it has to do with the cold / hot air mixing, faulty temp sensor or actuator?
Thanks
I experience an oscillating ventilation sound. Every couple seconds pitch goes up, followed by going down shortly after. It stops if I put temp control all the way up or down.
AC switched off. AC control unit recently serviced.
I'd imagine it has to do with the cold / hot air mixing, faulty temp sensor or actuator?
Thanks
#2
Rennlist Member
if its one of the flappers you can open the trunk remove the plastic panel right at the cowl and watch the 5 motors. they shouldn't oscillate. if they are, its likely the motor over the temp sensor.
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mzjt964 (05-15-2024)