CABIN
M6040, M7040, WSM
10-S3
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 10-S47
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-S26
Controller wiring harness 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 Replace 10-S26
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 –
Symptom Probable Cause Solution
Reference
Page