Fujitsu WATERSTAGE WS A050DD6 Series Maintenance Document page 30

Split system single phase type
Clear 39: Abnormal noise
Probable causes:
•
Abnormal installation (outdoor)
•
Fan failure
•
Compressor failure.
Checks:
30
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 1589-3