AC work unstable / inconstantly / erratic

[Antony]

Hi everyone. I have strange problem with my air conditioning. Sometimes it's works fine, without any issue. AC compressor, 2 fans works well.

But often it didn't work at all. I have many errors for all components of THC system. Errors are the same everytime. Attached it.

System filled with Freon, without leaks.
Louvers broken.
2 pumps for antifreeze works everytime, even when AC not working.

Can you advise what to do?

 

[NewbyMaybe]

You need to check your fan relays.

 

[NewbyMaybe]

If you go to an ordinary auto parts store they can help you find it and check it.

 

[Antony]

You need to check your fan relays.

Checked today. Relay is ok.

 

[DerbyDave]

The bottom half of errors are the battery Chiller and AC system with errors. I would have to take it in to have them figure out which component is bad. Several pumps are reporting errors, and it could just be a sensor gone bad, but your battery may not be getting the cooling it needs.

 

[Gtech]

Hi everyone. I have strange problem with my air conditioning. Sometimes it's works fine, without any issue. AC compressor, 2 fans works well.

But often it didn't work at all. I have many errors for all components of THC system. Errors are the same everytime. Attached it.

System filled with Freon, without leaks.
Louvers broken.
2 pumps for antifreeze works everytime, even when AC not working.

Can you advise what to do?

That are a lot of THC faults. I also see something with IGN so maybe some components doesn't get 12V or 5V ref from THC module.

Did you checked all fuses for THC module?

Otherwise could be a short in 5V ref so check if 5V is there when all components are connected.

 

[Antony]

That are a lot of THC faults. I also see something with IGN so maybe some components doesn't get 12V or 5V ref from THC module.

Did you checked all fuses for THC module?

Otherwise could be a short in 5V ref so check if 5V is there when all components are connected.

Could you advise, where is THC module. Try to find a scheme or picture.

 

[Gtech]

Could you advise, where is THC module. Try to find a scheme or picture.

See service.tesla.com and get a free subscription then you can see wiring diagram and fuseboxes for your model year