-32-
4-Troubleshooting
2. Abnormal noise
3. Smoke
Issue Symptom Possible cause Measure
A
B
C
Abnormal
noise from the
compressor
Abnormal noise from the
compressor body
Abnormal vibration after
turning on the A/C switch
Strange noise when the
magnetic clutch engages
Armature slips / does
not engage when the
compressor is running
Armature does not rotate
when magnetic clutch
engages
Increase tightening torque of
the loose bolts
Improve the compressor
attaching portion
Replace the compressor
Adjust air gap or replace
magnetic clutch
Replace the compressor if
locked. Readjust the belt
tension if the belt is loose
Replace the magnetic clutch
Check the voltage of battery
or replace magnetic clutch
Compressor installation bolt
is loose
Wide gap at the attaching
portion between the
compressor and the bracket
Compressor body internal
component damage
Magnetic clutch damage
Air gap too wide
Belt slipping
Magnetic clutch friction,
slippery surface
The magnetic clutch has a
backlash and slips
Abnormal
noise from the
magnetic clutch
Belt slipping
noise
Issue Symptom Possible cause Measure
A
B
C
D
Magnetic
clutch friction
surface slipping
The magnetic clutch slips /
does not engage when the
compressor is running
The magnetic clutch does
not engage
Adjust air gap or replace
magnetic clutch
Clean friction surface or
replace magnetic clutch
Magnetic clutch air gap too
wide
Magnetic clutch friction,
greasy surface
Coil open or shorted
Smoke from
the magnetic
clutch
Check the voltage of batteryLow magnetic clutch voltage
The magnetic clutch slips /
does not engage when the
compressor is running
Clean or replace the belt
Adjust the compressor
installation position
Adjust belt tension
Belt alignment is not correct
Magnetic clutch belt is
greasy
Magnetic clutch belt tension
is loose
Magnetic
clutch belt
slipping
Refrigerant / oil is blowing
out
Fix the refrigerant leakage
then fill with refrigerant until
having the right amount
Refrigerant leaking,
uncoupled piping or piping
burst
Smoke from
the compressor
Replace the magnetic clutch
Reduce the refrigerant
charge until reaching the
right amount
Refrigerant blowing from
the high pressure relief valve
due to excess of refrigerant
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