Original message
| cat78
 |  "High discharge press HELP!"
, posted Sat 21 Jun 18:23  
Hello, I have a York 0.5 ton system with a Freeze box and Chill box 2 TXV's, I have excessive discharge pressure and lack of cooling on the boxes, I already cleaned the condensor and replaced the filter driers, not good at setting txv's anybody have any ideas?
CAT78
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Replies:
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| Jojo98
| "Re(1):High discharge press HELP!" , posted Sat 21 Jun 22:48
High head pressure and low suction sounds more like a malfunctioning TXV than a problem with adjustment. Make certain the TXV is working properly first. With TXV's you need to establish proper subcooling first.Once you have weighed in the charge. Allow the unit to run for 15 minutes. With a Sharpie , scribble a mark on the TXV body and stem as a point of referance. If you turn the stem clockwise you will increase superheat, counter-clockwise will decrease superheat. Count the revolutions and adjust no more than 2 turns at a time. Wait 10 minutes and check superheat.
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