Kubota M108S, Workshop Manual

Page: 478 / 523

10-S3
M108S, WSM CABIN
AIR CONDITIONING SYSTEM (Continued)
W1014322
Symptom Probable Cause Solution
Reference
Page
Insufficient Cooling
(Hi-pressure Level is
Too Low) Refrigerant too short Check with manifold
gauge 10-S21
Low-pressure pipe in trouble (Cracked or
clogged) Replace –
Insufficient Cooling
(Low-pressure Level
is Too High) Refrigerant overcharged Check with manifold
gauge 10-S21
Heat-sensitive tube in poor contact Check and repair –
Expansion valve too open Replace –
Insufficient Cooling
(Low-pressure Level
is Too Low) Refrigerant too short Check with manifold
gauge 10-S21
Gas leak at heat-sensitive tube Replace –
Evaporator frosted Clean or replace –
Low-pressure pipe in trouble (Cracked or
clogged) Replace –
Expansion valve clogged Replace –
Insufficient Cooling
(Both Hi-pressure
and Low-pressure
Level is Too High) Refrigerant overcharged Check with manifold
gauge 10-S21
Insufficient Cooling
(Both Hi-pressure
and Low-pressure
Level is Too Low) Refrigerant too short Check with manifold
gauge 10-S21
Temperature Cannot
be Controlled
(Temperature Motor
and/or Temperature
Control Dial
Malfunction) Temperature motor defective Replace 10-S28
Temperature control dial defective Replace 10-S27
Wiring harness controller disconnected Repair or replace –
Temperature Cannot
be Controlled (Water
Valve Does Not Open
Properly) Cable wrongly set Repair –
Cable disconnected Repair –
Temperature Cannot
be Controlled (Mode
Motor and/or Mode
Switch Malfunction) Mode motor defective Replace 10-S28
Mode Switch defective Raplace 10-S27
Wiring harness controller disconnected Repair or replace –
Temperature Cannot
be Controlled (Heater
Hoses Laid is Bad) Heater hose caught Repair –
Heater hose twisted or bent Repair or replace –
KiSC issued 06, 2007 A