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Mystery leak

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#21 ·
baub said:
Please go into a little more detail on this. Do you mean the sensing tube, or do you actually mean the wiring?
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Just thought of another possibility- was it a unitary non-adjustable control?
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Yes it was a encapsulated low pressure switch. Brand new unit was flat on arrival when i went to do the start up. Leak checked everything a dozen times, was about to cut unit into sections when I disconnected the wires and they went into puddle of water and when I seen the bubbles I felt I had hit the lottery.
 
#23 ·
Ive add three units that has a leak at the lpc control.. One was a Adjustable Rance, one a Adjustable Dual Johnson control, and one was a Fixed switch.
 
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#25 ·
I had really good look this summer using the remaining refrigerant (if any) and nitrogen and electronic leak detector and soap bubbles. You can't be lazy and have to be patient.
 
Discussion starter · #26 ·
drife678 said:
I had really good look this summer using the remaining refrigerant (if any) and nitrogen and electronic leak detector and soap bubbles. You can't be lazy and have to be patient.
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That's typically how I do it as well. Gutted the entire refrigeration system and spent about 4 hours searching, so impatient and lazy are not in my vocabulary.
 
#27 ·
hydra said:
Wondering if anyone has a theory other than "operator error".
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Did you rule out a restriction? Possibly over charging to get it to work again when you thought it was low.
The way you have everything with the guts spilled out seems unlikely you're missing a leak that needs to be recharged every few months :.02:
 
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Discussion starter · #28 ·
Not a restriction. Definitely a leak. These units will not run overcharged Question is: With corroded copper, can the leak be so spread out that it can't be pinpointed? In other words, weeping out over large or multiple areas? Leak detector picked it up in the condensate tray but once I removed it from the cabinet no leak could be detected.
 
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