CONTACTOR OPEN

What does 1038 mean?

The motor controller (codes 1038, 2038, 3038) has detected that the main contactor is open when it should be closed. This indicates a contactor control issue, preventing power to the motor. The specific lift reaction is controller dependent.

• Contactor failed to close (e.g., mechanical jam, broken spring).
• Contactor coil open circuit or insufficient control voltage.
• Contactor feedback circuit fault, indicating a false open status.

Click steps to track your progress.

1. 1

   Verify the output signal from the motor controller to the main contactor coil for presence and correct voltage.

2. 2

   Measure the voltage across the main contactor coil terminals while the controller attempts to close it, comparing against nominal coil voltage.

3. 3

   Inspect the main contactor's auxiliary contacts for proper mechanical operation and continuity when the contactor is commanded closed.

4. 4

   Check all wiring connections related to the main contactor, including power, control, and feedback circuits, for looseness, corrosion, or damage.

5. 5

   Verify relevant motor controller parameters pertaining to contactor control and feedback for correct configuration.