No power to the compressor

2006 KIA SORENTO
120,000 MILES • 3.5L • V6 • 2WD • AUTOMATIC
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We've changed the compressor, expansion valve and the dryer. I hooked the power from the battery to the clutch then it worked for 30 minutes then the blow off valve blew the pressure off and lost the gas. What could be wrong?
Aug 18, 2019 at 12:28 PM
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JACOBANDNICKOLAS
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Welcome to 2CarPros.

Did you supply power direct from the battery? If you did, chances are the pressure got too high and the high pressure switch couldn't cycle the compressor off. The result is what you described.

Let me know if I understand correctly.

Joe
Aug 18, 2019 at 8:35 PM
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Yes, I got power directly from the battery. The wire that's going to the compressor has no power. What could be wrong?
Thanks
Aug 19, 2019 at 6:10 AM
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JACOBANDNICKOLAS
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Welcome back:

The reason it blew was because it couldn't cycle on and off with direct power. It built too much pressure. As far as no power from the supply, have you checked the relay? It is in the under hood relay box. See attached picture.

Here is a link explaining how to test a relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Let me know.

Joe
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Aug 19, 2019 at 7:03 PM
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Thank you very much. It was the relay. Thank yoh for your help!
Aug 20, 2019 at 7:19 AM
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JACOBANDNICKOLAS
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Welcome back:

You are very welcome. I'm glad it fixed the problem.

Take care and let me know if you need help in the future.

Joe
Aug 20, 2019 at 5:47 PM