Bill Sensor

Bill Sensor Error

Otis · 400 Elevator

What does Bill Sensor mean?

Indicates a bill sensor error within the bill validator. This affects the detection and validation of banknotes, potentially causing bills to be rejected or miscounted.

Common Causes

  • A malfunction of a sensor within the bill validator.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the input power supply voltage to the bill validator module is within specified operational limits.

  2. 2

    Inspect all data and power cabling between the elevator control unit and the bill validator, including internal connections to the bill sensor, for damage or loose connections.

  3. 3

    Check the bill feed path and the bill sensor aperture for any physical obstructions, debris, or excessive dirt, and clean thoroughly as required.

  4. 4

    Verify the bill validator's configuration parameters and sensor calibration settings within the Otis 400 elevator's control system or diagnostic tool.

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Verified technical data. Last updated: March 2026

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