Mitsubishi Elevator Door Motor P131028B104G01 YTJ031-14

Mitsubishi Elevator Door Motor P131028B104G01 YTJ031-14 is commonly used in Mitsubishi elevator door operator systems for car door opening and closing operation.

This motor is usually installed inside the door machine assembly and works together with the door controller, belt, pulley, encoder feedback, and mechanical door linkage. In many maintenance projects, it is checked when the elevator door becomes slow, unstable, noisy, or unable to complete the full opening and closing cycle.

Commonly Requested Models

This door motor is often searched or supplied under several related model numbers:

• P131028B104G01
• P131028B104G01-LS
• YTJ031-14
• YTJ031-13
• EMB-48-16

Some market listings describe it as a permanent magnet synchronous door motor for Mitsubishi elevator door machines. YTJ031-13 and YTJ031-14 are commonly listed together, and EMB-48-16 is also frequently used as the motor specification reference.

Before ordering, it is better to provide a clear photo of the original motor label, connector, and door operator structure to confirm compatibility.

A Door Movement Problem Found During Maintenance

In one hotel elevator maintenance project, technicians reported that the elevator door opened normally at first but became unstable after repeated operation.

The door controller was checked first. The belt tension and pulley condition were also inspected, but the problem continued.

After further testing, the motor response was found to be weak under load. The door operator could still move, but the motor could not provide stable torque during repeated opening and closing cycles.

After replacing the P131028B104G01 YTJ031-14 door motor and adjusting the belt tension, the door movement returned to normal.

Why Door Motor Problems Are Sometimes Misdiagnosed

Aging door motors do not always fail suddenly.

In real maintenance work, technicians may first notice:

• slow door opening
• weak closing force
• abnormal motor noise
• intermittent door movement
• door operation timeout
• repeated door reopening after failed closing

These symptoms may also come from the door controller, door belt, encoder feedback, pulley wear, or hanger roller resistance. Because of this, maintenance teams usually inspect the complete door operator system before replacing the motor.

Parts Often Checked Together

When replacing this Mitsubishi door motor, technicians usually check:

• door controller
• door motor belt
• pulley condition
• hanger rollers
• door guide shoes
• connector wiring
• mechanical resistance in the door operator

In older installations, increased friction from worn rollers or incorrect belt tension can place extra load on the motor. Replacing the motor without checking the mechanical parts may not fully solve the door operation problem.

Before Ordering

Please confirm the following before purchasing:

• original motor model
• Mitsubishi part number
• connector type
• installation direction
• door operator type
• motor label photo

Some Mitsubishi door motors look similar from the outside but use different wiring, torque, or installation structures. The safest way is to confirm by label and actual site photo.