5 ton trane package unit HP single stage 460v 3 phase.
evaperator fan turns on amp draw is fine, condenser fan and compressor turn on after delay but only for 5-10 seconds and loses 24 volts to cond. fan relay and to compressor contactor. i have 480 volts at contactor, 24 volts going into control board, high and low pressure switch stay closed, amp draw appears to be fine but not sure dont have much time to check. cond. fan motor and compressor dont feel hot to the touch. i am asuming control board is bad... any help appreciated. thanks guys..