Customer stated that the cooling wasn't not working, upon arrival I say a call for cooling but compressor wasn't working, I pressed the reset on the high pressure cut out and it turned on right away. It was hotter when the unit stopped working but today is really mild , like 66 degrees . It has ambient pressure control so the fan speeds up or slows down to build pressure, the head pressure got as high as 430 but no where near the cut off of 650 psi. I the sucking pressure looks high to me , I was initially thinking of non-condesables or clogged drier filter , but the temperature across the drier filter is the same, I have no filters in the system right now and coils look fine, the compressor amps are going from 5.3 to close 8 depending on the out door fan modulation. It's a low delta t , overcharged??

Posted by phalenjcarron at 2025-06-26 16:13:28 UTC