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Air cooled chiller is having issues with circuit 1 exv tripping on alarm. Trane chillers are pretty nice to work on given all the service tests they give you access to. I do fully explain the troubleshooting process for a exv or eev as some hvac technician call them. @EngineeringMindset has a great video on stepper motors and exv operations and design.
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geni.us/HVACTIME (Amazon)
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