Klima kühlt nicht Fehlerspeicher leer | Posts 16+

dieselschrauber · 04-07-2018, 9:45 Subject:

The pipe from the compressor to the condenser should be hot, the pipe leading towards the electronic valve should be lukewarm, and the pipe at the outlet of the evaporator (the thick one) should be cold.

I would like to connect a pressure gauge and see what the pressure levels are.

05-07-2018, 9:31 Subject:

Thank you for your answers.

How do you test the expansion valve?

Die Werkstatt (eine andere) hat gestern alles durchgeprüft und zum Schluss gekommen, dass sowohl ND wie HD auf 5 bar sind. Anlage wurde mit 550g und Kontrastmittel gefüllt und siehe da, Kondensator ist undicht. Mit der Brille und der UV Lampe sah man vorne alles grün. Der Kompressor wurde angesteuert (Klimasteuergerät und manuell) schaltet zwar kühlt jedoch nicht. Der Mechaniker meinte bis zum Kompressor hin ist alles in Ordnung, er müsse den Kompressor ausbauen und beim Servicefenster schauen was Sache ist. Falls er defekt ist und Späne hat, muss zusätzlich zum Kompressor und Kondensatorwechsel noch die ganze Anlage gespült werden. TroA new fuse is also required, or it may be included with the capacitor.

It surprises me that I always had excellent cooling performance, and now two components have suddenly failed without making any noise.

My previous two cars (an A4 B6 and an Ibiza 9L) still had the original compressor and condenser, even with just under 300,000 kilometers on the clock.

05-07-2018, 11:39 Subject:

Did the workshop fill the empty system with refrigerant?

06-07-2018, 7:43 Subject:

There were still approximately 300 grams of material in the system. I have no idea if everything was evacuated and refilled. All I know is that the system currently shows 550 grams, and it has likely lost some more in the meantime.

dieselschrauber · 06-07-2018, 8:24 Subject:

dieselfreak89 wrote:

The workshop (a different one) checked everything yesterday and concluded that both the ND and the HD are at 5 bar.

How can it be that your Screenshot shows a reading of 11.6 bar?

dieselschrauber · 06-07-2018, 10:31 Subject:

What are the pressure conditions immediately after the magnetic coupling is switched on?

Last year, I had a car where the throttle was completely blocked. The pressure would spike briefly to the correct level, and then it would stop.

I would also pressure test the system with a nitrogen overpressure of 25 bar to see if it is truly leak-proof, and leave it under pressure for several hours.