Abnormal Noise - Fujitsu ASUG09LZAS Service Manual

3-5. Abnormal noise

Forecast of cause
Abnormal noise is coming from Indoor unit.
(Check and correct followings)
• Is main unit installed in stable condi-
tion?
• Is the installation of air suction grille and
front panel normal?
• Is fan broken or deformed?
• Is the screw of fan loose?
• Is there any object which obstruct the
fan rotation?
End
3-5. Abnormal noise
Diagnosis method when abnormal noise is occurred
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Abnormal installation (indoor unit/outdoor unit)
Fan failure (indoor unit/outdoor unit)
Compressor failure (outdoor)
Abnormal noise is coming from Indoor unit.
(Check and correct followings)
• Is main unit installed in stable condi-
tion?
• Is fan guard installed normally?
• Is fan broken or deformed?
• Is the screw of fan loose?
• Is there any object which obstruct the
fan rotation?
Check if vibration noise by loose bolt or
contact noise of piping is happening.
Is compressor locked?
• Check Compressor
Refer to compressor and inverter com-
pressor in
on page 03-64.
- (03-41) -
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"Service parts information"
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End
3. Troubleshooting without error code