Alarm 700021 - Low lubricating oil level

What does 700021 mean?

This alarm appears when the lubricating oil level in the oil box drops below the minimum set value. Ignoring this alarm and continuing operation can lead to mechanical damage to the system.

• The lubricating oil level in the oil box is too low and needs to be replenished.
• Input terminals on the back of the PPU related to lubrication monitoring are damaged or loose.
• Pin 10 of the relevant PPU interfaces is not properly connected to 0 V.

Click steps to track your progress.

1. 1

   Check the lubricating oil level in the oil box and add lubricating oil to the correct level immediately.

2. 2

   Inspect the relevant input terminals on the back of the PPU for any damage or looseness and secure them.

3. 3

   Verify that pin 10 of the relevant PPU interfaces is properly connected to 0 V (ground).