UrbanCruiser AC Failure

I had something similar in my UrbanCruiser. Is the compressor clutch engaging? Check for power when you turn on the AC. Could be a relay or fuse, but those usually blow for a reason.

Where are the AC compressor relay and fuse located? And how can I tell if the compressor clutch is engaging without special tools?

The fuse box is usually under the hood, check the diagram on the cover. With the engine running and AC on, you should see the center of the compressor pulley engage. If not, and you have power, the compressor is likely toast. Best to take it to a workshop.

A technician found the AC control unit was defective and replaced it. Total cost was 980€. Thanks for the help diagnosing it.