Quote:
Originally Posted by billbo911
[size="5"]The key to making it work was to define the relay powering the compressor as a "Both directions". When we had it set to "Forward Only" it just would not work.
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Why are you defining an explicit relay for the compressor instead of using the Open Compressor vi? It's a lot less of a hassle to let the library code deal with reading the pressure switch and running the compressor as needed.