Hi, 
I have some problem with my A/C in my Skoda, the compressor clutch is not activating so I don't get any cold air blowing. 
I went to a mechanic for an A/C service and emptied, checked for leaks and refilled the system with freons. No leaks where found in the system. I tried turning on the A/C but the compressor clutch did still not activate. 

 

Then I did some googling and found out that by holding in the ECON button and the recirculation button for a few seconds would give some error codes in hexadecimal form. On the left LCD screen I got 21A which I calculated to be 00538 in decimal and seems to be some reference voltage issue.

 

On the right screen I got 02.h, I don't know what this code means since I think it equates to 2 in decimal form and I believe that the h stands for hexadecimal but I'm not sure on this one. 
Does anyone know what the 02.h means? 

I checked the power connector going to the compressor with an simple volt tester and it has power. I only found one pressure sensor for the A/C and it has 3 wires going to the connector, only one had power but my volt tester is referenced to measure between 6-24V. I just ordered a multimeter for better measurements.

 

And yes I have checked all the fuses a thousand times  I don't think there are any relays for the climate system in my car model. 

 

If there is anyone that have had a similar problem or knowledge of the issue please feel free to enlighten me.         

5 hours ago, Thefastsnail said:

the compressor clutch is not activating

Er, not all Skoda problems are electronic or admit of fault codes. I think a failed a/c clutch is one such problem. Did you go to an automotive a/s specialist or just a regasser?

There isn't a clutch on the compressor, that's old skool.

 

Nowadays it's regulated by a PWM controlled solenoid valve.

 

IIRC the Sandem compressor fitted to my car only has 2 wires going to the solenoid.  I know because my solenoid is clogged and I was triggering it manually with 12v to see if that helped, it didn't!

 

When triggered by demand the solenoid voltage ramps up slowly over a few seconds.  My method was direct on/off - open/close and it could be heard to click.  I figured it may free a jammed mechanism but conclude the fine gauze screens must be blocked with debris (I had a rotten/holed condenser for some months).