25201
Carrier Transicold
Warning

Over Current STP2

Overcurrent detected in the stepper motor 2 (STP2) circuit.

Possible causes

  • Short circuit in STP2 coil wiring
  • Internally damaged stepper motor
  • Physical obstruction in moving component
  • Failure in board power driver

Recommended actions

  • Verify STP2 actuator coil resistance
  • Inspect wiring harness for rubbing
  • Perform manual actuator software test
  • Change actuator if resistance is out of range

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