Kubota KX080-4 Workshop Manual page 459

KX080-4, WSM
Problem and/or
Situation
Not cooling effectively
(other)
Not heating effectively
Not enough air flow
(blower motor not
turning)
Not enough air flow
(air flow does not
change to speed 3)
Not enough air flow
(other)
Not cooling effectively
(compressor clutch not
working)
Not cooling effectively
(high-pressure level
too high)
Not cooling effectively
(high-pressure level
too low)
Not cooling effectively
(low-pressure level too
high)
Possible Cause
Thermistor broken
Hot water valve damaged
Condenser clogged with dirt or debris
Expansion valve broken
Hot water valve damaged
Servo motor broken
Blower fan switch broken
AC main relay broken
Brushes have poor contact
Blown fuse
Miswiring or poor connections
Blower resistor damaged
Relay damaged
Blower fan switch broken
Blower not tight enough
Blower deformed
Blower hitting its casing
Something blocking the inlet
Frost on the evaporator
Filter clogged
Vent ducts clogged or detached
Battery voltage too low
Rotor is hitting the stator
Miswiring or loose connectors
Relay damaged
Coil shorted
Ground defective
Coil burned out
Refrigerant overcharged
Condenser clogged with dirt or debris
Air got in
Not enough refrigerant
Compressor discharge valve damaged
Compressor gasket damaged
Error in the low-pressure line
(cracked or clogged)
Refrigerant overcharged
Expansion valve too far open
Replace
Replace
Clean
Replace
Replace
Check and repair
Check and repair
Replace
Replace
Replace
Check and repair
Replace
Replace
Replace
Check and repair
Replace
Check and repair
Check and repair
Clean or replace
Clean or replace
Check and repair
Charge the battery
Replace
Check and repair
Replace
Replace
Check and repair
Replace
Check with a manifold gauge
Clean
Check with a manifold gauge
Check with a manifold gauge
Replace
Replace
Replace
Check with a manifold gauge
Replace
5-S2
CABIN
Solution
KiSC issued 08, 2015 A