wsm L503 Workshop Manual page 567

L3130 · L3430 · L3830 · L4630 · L5030, WSM
1. TROUBLESHOOTING
COMPRESSOR
Symptom
Noisy
(Compressor ON)
(Compressor OFF)
AIR CONDITIONING SYSTEM
Does Not Cool
(No Air Flow)
(Compressor Does
Not Rotate)
(Others)
Insufficient Cooling
(Insufficient Air
Flow)
(Many Bubbles in
Sight Glass)
(No Bubbles in Sight
Glass)
Probable Cause
• 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
• 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
• Air filter clogged
• Evaporator frosted
• Blower motor defective
• Insufficient refrigerant
• Gas leaking from some place in refrigerating
cycle
• Air mixed in
• Too much refrigerant
Replace
Replace
Adjust or replace
Tighten
Tighten or add clamp
Repair or replace
Replace
Replace
Repair or replace
Replace
Replace
Replace
Repair
Replace
Repair or replace
Replace
Replace
Adjust or replace
Check with manifold
gauge
Replace
Replace
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
10-S1
CABIN
Reference
Solution
Page
10-S29
10-S29
G-29
–
–
10-S33
–
W1013580
G-36
10-S31
10-S31
10-S33
10-S32
–
G-36
10-S28
10-S33
10-S35
G-29
10-S13
–
10-S29
G-30
10-S41
10-S33
10-S13
10-S11
10-S14
10-S14
W1013718
KiSC issued 02, 2007 A