Bill Motor
Bill Validator Motor Defective
Otis · 400 Elevator
What does Bill Motor mean?
Indicates a defective motor within the bill validator. This motor is responsible for transporting and stacking banknotes, so its malfunction will prevent bill acceptance and processing.
Common Causes
- A defective motor in the bill validator.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Verify DC supply voltage to the bill validator motor at its input terminals against the specified nominal value.
- 2
Inspect motor power and signal cables for damage, wear, or loose connections between the controller and the motor.
- 3
Carefully inspect the bill transport mechanism for any jammed banknotes, debris, or foreign objects obstructing the motor's operation.
- 4
Check the bill validator's diagnostic interface or controller status for motor control signals, driver fault indicators, or specific sub-fault codes.
Verified technical data. Last updated: March 2026
Related Faults
Source: Otis 400 Elevator