wsm M6040 Workshop Manual page 535

M6040, M7040, WSM
1. TROUBLESHOOTING
COMPRESSOR
Symptom
Noisy
(Compressor ON)
Noisy
(Compressor OFF)
AIR CONDITIONING SYSTEM
Symptom
Does Not Cool
(No Air Flow)
Does Not Cool
(Compressor Does
Not Rotate)
Does Not Cool
(Others)
Insufficient Cooling
(Insufficient Air Flow)
Insufficient Cooling
(Many Bubbles in
Sight Glass)
Insufficient Cooling
(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
Probable Cause
Fuse blown
A/C main relay defective
A/C blower motor defective
A/C 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
A/C blower motor defective
A/C blower resistor 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
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
Replace
Check with manifold
gauge
Repair and charge
refrigerant
Check with manifold
gauge
Check with manifold
gauge
10-S1
CABIN
Reference
Solution
Page
10-S42
10-S42
10-S42
–
–
10-S27
10-S22
Reference
Solution
Page
9-S11
9-S46
10-S27
10-S24
–
9-S11
10-S22
10-S24
10-S30
10-S42
10-S21
–
10-S42
G-30, G-31
–
10-S27
10-S27
10-S21
10-S13
10-S15
10-S21
KiSC issued 07, 2012 A