Abnormal Noise; Water Leaking - Fujitsu ASTG18KMTC Service Instruction

Trouble shooting 27

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?
OK
Is Fan broken or deformed?
Is the screw of Fan loose?
Is there any object which obstruct the Fan rotation?
Trouble shooting 28

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 OK
Is Drain hose connection loose?
Is there a trap in Drain hose?
Is Drain hose clogged?
OK OK
Is Fan rotating?
Forecast of Cause :
1. Abnormal installation (Indoor/ Outdoor)
2. Fan failure (Indoor/ Outdoor)
3. Compressor failure
Abnormal noise is coming from Outdoor unit.
(Check and correct followings)
Is Main unit installed in stable condition?
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 (PARTS INFORMATION 1,2)
Forecast of Cause:
1. Erroneous installation
Diagnosis method when water is spitting out.
Is the filter clogged?
Check Gas pressure and correct it
if there was a gas leak.
02-37
(Outdoor)
OK
OK
OK
2. Drain hose failure
OK OK
MPa MPa