I don't know what a trinary is. I tried to run a high pressure cut off switch. I purchased a switch that would open the circut to the compressor over 275 psi. It was not high enough, It should have been higher than the system operating pressure that is around 325-350 psi..I have since removed the switch and let is cycle soley on the thermotst that sticks into the evaporator. What is the trinay switches function?
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