Introduction
This manual provides essential information for the installation, operation, troubleshooting, and maintenance of your szmicroera Treadmill Motor Controller (Models MC2100ELS-50W-ZY and MC2100ELS-50W-2Y). Please read these instructions carefully before proceeding with installation or repair to ensure safe and correct usage.
Important Note:
Before purchasing or replacing, it is crucial to send a clear picture of your old controller to ensure compatibility, especially due to potential pin differences between versions.
Product Overview
The szmicroera MC2100ELS-50W-ZY and MC2100ELS-50W-2Y are original lower control boards designed for ICON and PROFORM treadmills. These boards manage the treadmill's motor functions and power supply.


The new version of the MC2100ELS-50W-2Y controller is shown on the left, and the old version on the right. Note the slight differences in component layout.
Installation and Setup
Before attempting any installation, ensure the treadmill is unplugged from the power source to prevent electrical shock.
1. Confirming the Correct Board
This controller comes in several types and versions. To ensure you have the correct replacement, please compare your old board with the images provided. Pay close attention to the label and the overall layout.

If you are unsure, provide clear photos of your original board (front side and any labels) to the supplier for verification.
2. Wiring Connections
Carefully disconnect the wiring from your old controller, noting the position of each connector. Refer to the diagram below for typical connection points on the MC2100ELS-50W-2Y board.

- Motor Red: Connects to the red motor wire.
- Motor Black: Connects to the black motor wire.
- AC Power: Main power input.
- 2pins, 3pins, 8pins, 5pins: Various control and sensor connections. Ensure these match your treadmill's wiring harness.
Connect the corresponding wires to the new controller. Double-check all connections before restoring power.
Operation
Once the controller is correctly installed and all connections are secure, restore power to the treadmill. The treadmill should now function as normal. Refer to your treadmill's main user manual for specific operating instructions.
Maintenance
The treadmill motor controller itself requires minimal maintenance. Ensure it is kept free from dust and moisture. Periodically check all wiring connections for tightness and signs of wear. If any issues arise, refer to the troubleshooting section.
Troubleshooting
Common Error Codes and Solutions
If your treadmill displays an error code, it may indicate a problem with the controller or other components. Here are common error codes and their general meanings:
- E01: Communication failure. This often points to a sensor failure.
- E02: Controller failure. If E02 appears, it is recommended to first test the motor for any issues.
- E03: Sensor fault. The treadmill may run for a few seconds before displaying E03.
- E04: Over-current fault. This situation typically indicates burned components on the controller.
- E08: May indicate a lift motor control fault.
Testing the Motor
Before replacing the controller due to an E02 error or suspected motor issues, it is crucial to verify the motor's functionality. You can test the motor using a 5# (AA) battery as shown below:

- If the motor runs smoothly when connected to the battery, the motor is likely in good condition.
- If the motor runs unevenly or does not run at all, it indicates a problem with the motor itself.
Specifications
| Feature | Detail |
|---|---|
| Model Numbers | MC2100ELS-50W-ZY, MC2100ELS-50W-2Y |
| Brand Name | szmicroera |
| Compatibility | ICON, PROFORM Treadmills |
| Voltage | 220V (Original Controller) |
| Type of Sports | Cardio Training |
| Department Name | Unisex |
| Origin | Mainland China |
| Package Dimensions (approx.) | Length: 22 cm, Width: 15 cm, Height: 13 cm |
| Package Weight (approx.) | 0.8 kg |
Warranty and Support
Warranty Information
The controller you receive has been tested and comes with a heatsink. It is new and includes a 90-day warranty.
Free return or refund is available if the board received is:
- Not as described
- Different from the real photo
- Not working
- Broken
Additional Parts and Support
If you require additional parts for your treadmill or have further questions, please contact the supplier. They offer a range of Lower Control Boards (LCBs) and can assist with compatibility queries.

User Tips
- Always double-check the voltage requirements of your treadmill. This controller is designed for 220V systems.
- When replacing the controller, take photos of your existing wiring before disconnecting anything. This will serve as a valuable reference during reinstallation.
- If your treadmill is experiencing intermittent issues, perform the motor test described in the Troubleshooting section to rule out motor failure before replacing the controller.
Frequently Asked Questions (FAQ)
- Q: Is the new version of the controller compatible with the old one?
- A: Generally, yes, but it is highly recommended to send a clear picture of your old controller to the supplier for confirmation before purchasing, as pin differences might exist and cause incompatibility.
- Q: Is this card 110V?
- A: No, this controller is specified for 220V systems. Ensure your treadmill's power supply matches this requirement.





