Thermistor Input Fault

What does 66 mean?

The motor temperature has increased beyond limits, as detected by a thermistor input, or there is an issue with the thermistor circuit itself. This could be due to inadequate motor cooling, excessive mechanical load on the motor, or a faulty thermistor connection. Overtemperature can lead to motor damage and reduced lifespan.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the thermistor input is not used, ensure it is properly short-circuited as per manual instructions.

2. 4

   Contact your nearest distributor if the fault persists after troubleshooting.