Valtest connection and tests:

      1- Disconnect the compressor from the ECU.

      2- Connect the compressor to the VALTEST.

      3- Connect the output of the ECU to the input of the VALTEST.

      4- Turn on the VALTEST and verify the state of the

      valve"SHORT CIRCUIT" or "OPEN CIRCUIT". Turn off the

      VALTEST.

      5- Start the car engine, the air-conditioning, and the VALTEST.

      6-Verify the pressures reducing and increasing the signal with

      the"+" and "-" of the instrument.

Results of the test:

- If you have the indication OC / LO on the display, then you must to change the valve.

- If the compressor compresses and works normally, there is a fault in the Electronic Control Unit (ECU).

- If the compressor does not work, you have to verify the state of the valve and change it.

- If it still does not work, you have to change the compressor.

 We are not just selling automobile parts, but also providing our customers’ with a 

positive, helpful experience before, during or after purchasing processes. Our skilled 

employees are able to provide assistance and collect feedback from past orders. 

l        We are a professional auto A/C parts supplier with 14 years experience.

l     Our company focuses on the middle and high-end market, and has good reputation in Japan, Europe and North America for the outstanding customer service.

l     With ISO9001, TS16949 and TUV certification and stable quality, we gain the high trust from customers.

l      We can be your one-stop AC parts service supplier and offer OEM/ODM and other personalized services

l      With a professional R & D team and a variety of inventions, patents, and exclusive products, our company’s market advantage is obvious.

l      We participate in different international exhibitions worldwide and keep a close relationship with customers.

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