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Discussion Starter · #1 ·
Hi all,
My a/c indicator (right bottom in the climate control) constantly flashes on and off. When it turns on, the car makes a swirling sound.
I checked the car with VCX nano, in the Module Diagnostic -> HVAC control module -> Data Display -> HVAC Faceplate data: I can see the Auto HVAC indicator is always off.
My question is:
1. Is this diagnosis related to the A/C indicator in the climate control? If not, where should I look.
2. Judging from the swirling sound something of the car is being switched, what can it be?

Really troubled by this sound and the obvious disconnection of something in HVAC operating and not knowing what.
Thanks!
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Discussion Starter · #4 ·
I have finally located what causes the cool indicator to be on:
The Power requested by electric A/C compressor from hybrid/ev battery pack is the place where a difference can be seen.
When the climate control cooling indicator(the snow flake) is on, the power drawn is 0.6KW.
If not, the power drawn is 0.4KW.
Accompanying it is the swirling sound with the flowing sound of the coolant in the car.
So I assume that this is indicating the compressor is ran to cool the power pack as well as heating the cabin.
The only problem is why does it turn on and off all the time? Is this because my coolant pump is not bled?
https://ibb.co/p46hbVx
 

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It tries to dry the air inside the car

Mine also turns sometimes on when the temp is ranging from 0 to 6C
When it is freezing, it finally stops running
 

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I don't know why it goes on and off so much, but that does sound normal based on how mine works, and many other members have commented the same.
 

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Discussion Starter · #7 ·
I used the GDS2 to watch over the power consumption when the cooling is turned on. It's the Electric A/C compressor from Hybrid/EV Battery pack that has been turned on and off.
When it's on, it draws 0.6KW, when it's off, it still draws 0.4KW, unless the fan is completely off.
I guess it's for dropping the humidity of the cabin?
Or it's for cooling the battery, which is unlikely.
See here:
https://ibb.co/pRpDP8p
 
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