Abnormal Noise; Water Leaking - Fujitsu Airstage V-II Service Manual

Trouble shooting 67

Abnormal Noise

Diagnosis method when Abnormal Noise is occurred
Abnormal noise is coming from Indoor Unit
(Check and correct followings)
Is Main Unit installed in stable condition?
Is the installation of Air suction grille and front panel normal?
In case of Duct type : Is Static Pressure range normal?
(Refer to Data & Technical Manual)
OK
Is Fan broken or deformed?
Is the screw of Fan loose?
Is there any object which obstruct the Fan rotation?
Attention!!
If Refrigerant Noise is occurring, Check if the Indoor and
Outdoor Thermistor is wrongly installed. Check and
correct the thermistor.
Trouble shooting 68

Water Leaking

Diagnosis method when water leak occurs
Is Main Unit installed in stable condition?
Is Main Unit broken or deformed at the time of
transportation or maintenance?
OK
Is Drain Hose connection loose?
Is there a trap in Drain Hose?
Is Drain Hose clogged?
OK
Is Fan rotating?
>> Check Fan Motor (Service Parts Information 19)
OK
Is Float Switch defective?
>> Check Float Switch (Refer to Trouble Shooting 7)
Forecast of Cause :
1. Abnormal installation (Indoor/Outdoor) 2. Fan failure(Indoor/Outdoor)
3. EEV failure (Indoor) 4. Compressor failure (Outdoor)
Is Main Unit installed in stable condition?
Is Bell Mouth 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 (Service Parts Information 2,3)
Forecast of Cause :
1. Erroneous installation 2. Drain hose failure 3. Float Switch failure
Diagnosis method when water is spitting out
Is the filter clogged?
Check Gas Pressure and correct it if there was a gas leak.
Attention!!
If water is leaking from the Indoor Unit that is not in
operation, there is a possibility of Indoor EEV is not
closed.
=> Check EEV (Service Parts Information 14)
04-74
Abnormal noise is coming from Outdoor Unit
(Check and correct followings)
OK
OK
OK
OK
MPa MPa