Hello Everyone.

I have a Mercedes S430, 2000.

No cold or hot air coming out, tried all selections on the control panel.
Checked fuses and relays.

Pulled the code reader, said that refrigerant capacity was low.
Went to an A/C guy, he told me I have enough pressure in the system for compressor to engage.

- Compressor does not engage (readings High/Low stay the same whether i turn ac on or off)
- Static pressure readings Low/High are 70 +-5psi.

I did not pull out the blower motor, I think its a problem with control module itself since there is no air coming out at all And, the compressor does not engage.

Any ideas?

Thank you!