i heard of people saying the low side is pulling a vacuum becasue the expaansion valve is stuck or there is a restriction. but i dont understand how could get to a vacum bc the low pressure swithc would shut it all down. like i say my real problem is the 10 - 15 second cycling. as described above. a...

the reason i ask is b/c my system imediately pulls to the low side cut off and shuts down the compressor. then 5 seconds later the whole cylce repeats. low side moves down, the high side starts rising. then the cut off triggers and all repeats. the compressor and whole cycle keeps cycling every 10 -...

Low Side pressure. How could low side pull a vacuum with the low pressrue switch working. would the pressure switch cause the compressor to shut off ?