26110
Carrier Transicold
Critical

Engine Speed Sensor ABN ENCU

Engine speed sensor (RPM) signal missing or erratic.

Possible causes

  • Dirty speed sensor (metal shavings)
  • Incorrect gap between sensor and flywheel
  • Damaged shielded wiring
  • Damaged flywheel teeth

Recommended actions

  • Clean magnetic sensor tip
  • Adjust sensor gap according to manual
  • Verify wiring continuity
  • Measure AC signal generated by sensor

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