wsm L503 - Page 567

10-S1
L3130 · L3430 · L3830 · L4630 · L5030, WSM
CABIN
1. TROUBLESHOOTING
COMPRESSOR
W1013580
AIR CONDITIONING SYSTEM
W1013718
Symptom Probable Cause Solution
Reference
Page
Noisy
(Compressor ON)
(Compressor OFF)
• Bearing of compressor worn or damaged
• Valves in compressor damaged
• Belt slipping
• Compressor bracket mounting screws loosen
• Piping resonant
• Blower defective
• Bearings of magnetic clutch, idle pulley or
crank pulley worn or damaged
Replace
Replace
Adjust or replace
Tighten
Tighten or add clamp
Repair or replace
Replace
10-S29
10-S29
G-29
–
–
10-S33
–
Does Not Cool
(No Air Flow)
(Compressor Does
Not Rotate)
(Others)
• Fuse blown
• A/C main relay defective
• Blower relay defective
• Blower motor defective
• Blower switch defective
• Wiring harness disconnected or improperly
connected
• Fuse blown
• Magnetic clutch defective
• A/C switch defective
• Pressure switch defective
• Belt slipping
• Insufficient refrigerant
• Expansion valve defective
• Compressor defective
Replace
Repair or replace
Replace
Replace
Replace
Repair
Replace
Repair or replace
Replace
Replace
Adjust or replace
Check with manifold
gauge
Replace
Replace
G-36
10-S31
10-S31
10-S33
10-S32
–
G-36
10-S28
10-S33
10-S35
G-29
10-S13
–
10-S29
Insufficient Cooling
(Insufficient Air
Flow)
(Many Bubbles in
Sight Glass)
(No Bubbles in Sight
Glass)
• Air filter clogged
• Evaporator frosted
• Blower motor defective
• Insufficient refrigerant
• Gas leaking from some place in refrigerating
cycle
• Air mixed in
• Too much refrigerant
Clean or replace
Clean or replace
thermo switch
Replace
Check with manifold
gauge
Repair and charge
refrigerant
Check with manifold
gauge
Check with manifold
gauge
G-30
10-S41
10-S33
10-S13
10-S11
10-S14
10-S14
KiSC issued 02, 2007 A