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  1. Replies
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    Resolved York Predator ZF120

    Hello Spears Group,

    I'm sure you have resolved this problem by now as well and I appreciate your correspondence when this happened to me back in June.

    Better late than never: we found the...
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    Yes sir, we have done exactly that. We thought...

    Yes sir, we have done exactly that. We thought factory overcharged. We subtracted refrigerant when recharged and it ran ok until it was cooler at night then locked out on freeze stat. Yes, it is a...
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    Thanks for your reply. We have verified the...

    Thanks for your reply. We have verified the pressures are at the safety limits of 410A and the h/p switches are preset for 410A. Even if they were set for R-22 they would trip consistently, which is...
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    Here's what happens... The first stage of cooling...

    Here's what happens... The first stage of cooling starts and trips the high head pressure control within 3-4 seconds. The unit is new. This locks out the unit and after restating sometimes it starts...
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    I'm a technician

    I'm a technician
  6. Replies
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    York Predator zf120

    I have been having a problem with York ZF120. Unit locks out on high pressure sporadically on both stages. Then just by resetting it the unit operates fine for a time and then for no apparent reason...
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