i have been having a problem with a 20 ton trane voyager roof top unit. the unit will trip in cool fail every 4 to 5 days. i have replaced and rewired almost everything.
i will reset the unit and check the cooling sequence of operation, the pressures, superheat, subcooling, everything checks out. i bypassed all of my safties and the unit still trips cool fail. i have been at this unit during the morning, the afternoon, and the night, it operates smoothly ever time.
the thermastat wire leading from the thermastat and to the unit is not sheilded. i have spoke with other techs that are trane knowledgebale and am running out of ideas.