Quote:
Originally Posted by j cAT
normally when a compressor fails you get noises that vary with load/temp. in your case its intermitent. it is possible the low pressure switch is not opening when pressures drop , the the compressor gets noisey with no/low refrigerent to lube the unit. remove switch and test for proper operation.
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Going to check that low pressure switch next , I have a new compressor in the box , but hate to put it on not knowing the problem... Low pressure switch is fine... Looks like the old compressor is next !