Overheat key components (oH2)

The drive has detected the key components are overheat.

Action condition - oH2 error level minus (–) 5°C

The oH2 warning occurs when the temperature sensor of key components detects the temperature is higher than oH2 warning level.

1. Check the ambient temperature.
2. Regularly inspect the ventilation hole of the control cabinet.
3. Change the installed place if there are heating objects, such as braking
resistors, in the surroundings.
4. Install / add cooling fan or air conditioner to lower the temperature inside the
cabinet.

Check if the drive matches the corresponded loading -

1. Decrease loading.
2. Decrease the carrier.
3. Replace with a drive with larger capacity.