Insufficient Cooling; Not Rotate Properly); Insufficient Heating- Page 745

CABIN

L3560, L4060, L4760, L5060, L5460, L6060, WSM

10-S2

Insufficient Cooling
(Compressor Does 
Not Rotate Properly)

Belt slipping

Adjust or replace

G-29

Magnetic clutch damaged

Repair or replace

10-S22

Compressor damaged

Replace

10-S45

Insufficient Cooling
(Others)

Thermostat damaged

Replace

–

Water valve damaged

Replace

–

Condenser fin clogged with dust

Clean

G-30

Expansion valve damaged

Replace

–

Insufficient Heating

Water valve damaged

Replace

–

Temperature motor damaged

Check and repair

10-S27

Insufficient coolant

Fill

G-9

Too Low Air Flow 
Rate
(Blower Motor Does 
Not Run)

Blower switch damaged

Check and repair

10-S23

A/C compressor relay damaged

Replace

10-S29

Brush in poor contact

Replace

10-S27

Fuse blown out

Replace

G-45

Wrong wiring or loose connections

Check and repair

–

Too Low Air Flow 
Rate
(Flow Rate Does Not 
Change in 4 Steps)

Blower resistor damaged

Replace

10-S26

Relay damaged

Replace

10-S28

Blower switch damaged

Replace

10-S23

Too Low Air Flow 
Rate
(Others)

Blower is not tightened enough

Check and repair

10-S27

Blower deformed

Replace

10-S27

Blower in contact with casing

Check and repair

10-S27

Obstacle at or near suction port

Check and repair

–

Evaporator frosted

Clean or replace

–

Filter clogged

Clean or replace

G-30

Blow duct clogged or missing

Check and repair

–

Insufficient Cooling
(Compressor 
Magnetic Clutch 
Does Not Work)

Low battery voltage

Charge

G-27

Rotor in contact with stator

Replace

10-S45

Wrong wiring loose connections

Check and repair

–

Relay damaged

Replace

10-S29

Coil shortage

Replace

10-S45

Ground malfunction

Check and repair

9-S35

Coil burst out

Replace

10-S45

Insufficient Cooling
(Hi-pressure Level is 
Too High)

Refrigerant overcharged

Check with manifold 

gauge

10-S13

Condenser clogged with dust and dirt

Clean

G-30

Air mixed

Check with manifold 

gauge

10-S13

Insufficient Cooling
(Hi-pressure Level is 
Too Low)

Refrigerant too short

Check with manifold 

gauge

10-S13

Compressor discharge valve damaged

Replace

–

Compressor gasket damaged

Replace

–

Low-pressure pipe in trouble

(Cracked or clogged)

Replace

10-S50

Symptom

Probable Cause

Solution

Reference 

Page

KiSC issued 03, 2016 A