AC fault puzzle one for audiman ?

[alg]

Just to add to my AC fault woes. The system has failed to start on three occasions after being stood in a hot carpark.
The system works usually without fault but has only failed after standing all day. What temperature sensors does the manual system link to ?
How does it detect the 5oC to protect the system in winter ?

This evening after working on the way to work the AC did not work until briefly in traffic the main rad fan kicked in due to high coolant temps...then it worked briefly but only with the fan on. It then stopped when it did.

Any ideas ?

[newsh]

Its freezing cold and pissing with rain, the system probably thinks it IS winter

[alg]

Actually it was doing a good impression of summer the last few days

[alg]

Working again in cool morning temps !!

[alg]

Solved see http://www.s2forum.com/forum/showthread.php?t=23950

[lini]

RS2 95 automatic AC? If yes then try chanel #1 for failures if I remember 22.3 says that high presure switch opened power suply for clutch. Happened sometimes on a real hot day. Read the failures and solution is on the hand. To get to the codes press recycle and arrow up and then chose channel #1 press recycle and read the failures. You will know the ansver imediatley.


Been reading again. And you solwed. Fan has to go on all the time. If not you read high presure. You hawe a bad contact on some conector. The AC fluid has to be cooled down all the time or it's presure will rise up to 25bar vhen the presure switch cuts out the suply for the clutch. Solution if you dont find the failure get a relay thet will click in the 1st step on a fan when the compresor clutch is energized.

The codes will always tell why the system is not working. If there is no error code normaly the compresor is dead.

[alg]

No error codes with manual AC (auto units do store codes)
Only died when warm and the clips on the connector were unclipped only at one side. I guess I moved it enough sorting the aux lead to the back of the CD headunit to make the contact less stable. I did not however do anything directly to it. My guess is its been waiting to happen for years.