Error 26 on a Precor treadmill signifies an issue with the Motor Pulse Width Incorrect signal, indicating that the treadmill's control system is receiving an incorrect or erratic signal from the speed sensor regarding the actual speed of the running belt. Essentially, the machine isn't getting consistent or accurate feedback about how fast the belt is moving compared to the speed it's been instructed to achieve.
Understanding Error 26: Motor Pulse Width Incorrect
When your Precor treadmill displays Error 26, it means the system has observed the signal from the speed sensor and determined that this signal is not appropriate for the requested speed. The speed sensor is a critical component that monitors the rotation of the motor or front roller, sending data to the treadmill's main control board (often called the Motor Control Board or MCB). This data allows the treadmill to maintain the desired speed.
If the speed sensor sends a signal that is unstable, inconsistent, or doesn't match the speed setting, the treadmill detects a discrepancy. This triggers Error 26, causing the treadmill to stop operating as a safety measure and to prevent potential damage.
Common Causes of Precor Error 26
Several factors can lead to an incorrect or erratic speed sensor signal and, consequently, Error 26:
- Faulty Speed Sensor: The sensor itself may be damaged, worn out, or misaligned, preventing it from accurately reading the speed.
- Dirty or Obstructed Sensor: Dust, lint, or debris accumulating on the speed sensor or its target (e.g., a magnet or reflective strip) can interfere with its ability to get a clear reading.
- Loose or Damaged Wiring: The electrical connections between the speed sensor and the Motor Control Board can become loose, frayed, or broken, leading to an intermittent or absent signal.
- Motor Control Board (MCB) Malfunction: The MCB is responsible for interpreting the speed sensor's signal. If the board is faulty, it might misread the sensor's input or fail to process it correctly.
- Excessive Belt/Deck Friction: A worn or unlubricated walking belt and deck can create too much friction, causing the motor to struggle and the belt speed to fluctuate. The speed sensor would then report these inconsistencies.
- Motor Issues: While less common for this specific error, problems with the drive motor itself, such as worn brushes or internal faults, could lead to unstable belt speeds that the sensor accurately reports as erratic.
Troubleshooting and Solutions for Error 26
If you encounter Error 26 on your Precor treadmill, you can perform several troubleshooting steps:
-
Inspect and Clean the Speed Sensor:
- Locate: The speed sensor is typically found near the front roller or attached to the drive motor, often appearing as a small plastic component with wires.
- Clean: Gently wipe the sensor and any corresponding magnet or reflective disc with a clean, dry cloth to remove dust or debris.
- Check Alignment: Ensure the sensor is securely mounted and properly aligned with its target.
-
Examine Wiring Connections:
- Safety First: Always unplug the treadmill from the power outlet before inspecting internal components.
- Trace Wires: Follow the wires from the speed sensor to the Motor Control Board.
- Secure: Check all connectors to ensure they are firmly plugged in. Look for any signs of damage, fraying, or pinches in the wiring.
-
Check for Mechanical Drag:
- With the treadmill unplugged, manually try to move the walking belt. It should move relatively smoothly.
- If the belt feels stiff, sticky, or unusually difficult to move, it may indicate that the belt and deck require lubrication or that the walking belt is too tight or worn out.
-
Consider Motor Control Board (MCB) Issues:
- If the sensor and wiring appear to be in good condition, the problem might stem from the Motor Control Board. This component is more complex and typically requires professional diagnosis and replacement.
-
Professional Service:
- If you've performed these basic checks and the Error 26 persists, it is best to contact a qualified treadmill technician or Precor customer support. They possess specialized tools and expertise to accurately diagnose and resolve the issue, which might involve replacing the speed sensor, MCB, or addressing more complex motor or mechanical problems.
Summary of Error 26 Troubleshooting
For a quick reference, here's a summary of common causes and solutions for Precor Error 26:
| Component | Potential Issue | Recommended Action |
|---|---|---|
| Speed Sensor | Dirty, misaligned, or faulty. | Inspect, clean, align, or replace the sensor. |
| Wiring & Connectors | Loose, frayed, or damaged. | Check and secure all connections; repair or replace damaged wires. |
| Motor Control Board | Malfunctioning or unable to process sensor data. | Professional diagnosis and replacement are typically required. |
| Walking Belt/Deck | Excessive friction or drag. | Lubricate the walking belt/deck; adjust belt tension; consider replacement if worn. |
| Drive Motor | Inconsistent speed output or internal fault. | Professional diagnosis; may require motor repair or replacement. |
By systematically checking these areas, you can often pinpoint and resolve the underlying cause of Error 26 on your Precor treadmill. For further assistance or to schedule service, you can reach out to Precor Support.
