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was introduced to my new problem today. brand new unit. 2 cicuits. #1 15 degree SH and 12degree SC. #2 24degree SH and 21 degree SC. Only 10 degrees across coil. I would think #1 is OK but #2 having both high SH and SC has got me puzzled. Unit is for a gas station with a little food area. There is a hood exhaust and make up which appear to be ok. Unit never gets to set pt
Restriction?
Sounds like ckt 2 has a restriction, look for a temp drop on the liquid line. Check the filter drier and condenser. Does it have a TXV or fixed orifices?
fixed orifice
What are the pressures?
Could have installed the wrong size piston in that circuit
I honestly didnt check for a restriction but havin a hard time thinkin it would cause High SH and SC
#1 135/355
#2 125/385
410 freon
47degree suction temp 95 degree liquid on circuit#1
43degree suction and 91 degreeliquid #2
could be a restriction. now that im looking at the numbers
Could it be overcharged?
If this is a package unit, I would weigh the charge.