H11

What does 111 mean?

The temperature sensor inside the controller is indicating undefined values. This suggests a fault with the sensor or its connection, leading to unreliable internal temperature monitoring.

• Internal temperature sensor (e.g., integrated thermistor, IC sensor) on the control board has failed.
• Faulty solder joint or internal connector linking the sensor to the drive's analog-to-digital converter (ADC) input.
• Unstable or incorrect internal power supply voltage to the sensor or its reference circuitry.
• Severe electromagnetic interference (EMI) affecting the sensitive analog input circuitry for the internal temperature sensor.

Click steps to track your progress.

1. 1

   1. Power cycle the drive and observe if the fault clears; sometimes transient conditions can trigger it.

2. 2

   2. Verify the ambient operating temperature within the control cabinet is within the drive's specified range (e.g., 0-50°C).

3. 3

   3. Inspect the control board for any visible signs of overheating, component damage, or abnormal odors.

4. 4

   4. Perform a factory reset of drive parameters (e.g., Parameter P0-02 = 1) and re-download the configuration, then re-evaluate.

5. 5

   5. Contact the drive manufacturer's technical support for potential control board replacement, providing the specific fault code and drive serial number.