Fujitsu Waterstage WS G140DC6 Series Maintenance Document page 34

Split system (Single phase and 3-phase type)
Clear 39: Abnormal noise
Probable causes:

Abnormal installation (outdoor)

Fan failure

Compressor failure.
Checks:
34
1. The noise comes from the outdoor unit:
- Is the unit stable?
- Is the protection screen properly mounted?
- Is the propeller broken or distorted?
- Has the propeller screw been lost?
- Is any object blocking the propeller rotation?
- Check for any vibration noise caused by a
bolt.
- Check for any sound of contact with a pipe.
- Is the compressor locked?
OK
OK
OK
Maintenance Document 1544-1