Kubota B1830, Workshop Manual, Page: 508 / 548

CABIN B1830,B2230,B2530,B3030, WSM
10-S3
Cycle Pressure Is Not
as Specified.
(High-Pressure Level
Is Not Specified level.
Too High Pressure) Refrigerant overcharged Check G-53
Condenser clogged with dust and dirt Clean G-13
Air mixed Check with manifold
gauge 10-S8 to
10-S9
Cycle Pressure Is Not
as Specified
(High-Pressure Level
Is Not Specified
Level. Too Low
Pressure) Refrigerant too short Check G-53
Compressor discharge valve damaged Replace 10-S32
Compressor gasket damage Replace 10-S32
Low-pressure pipe in trouble (Cracked or
clogged) Replace 10-S32
Cycle Pressure Is Not
as Specified.
(Low-Pressure Level
Is Not Specified level.
Too High Pressure) Refrigerant overcharged Check G-53
Heat-sensitive tube in poor contact Tighten G-13
Expansion valve opened Replace 10-M16
Cycle Pressure Is Not
as Specified
(Low-Pressure Level
Is Not Specified
Level. Too Low
Pressure) Refrigerant too short Check G-53
Gas leak at heat-sensitive tube Replace 10-M16
Evaporator frosted Check or replace 10-S37
Low-pressure pipe in trouble (Cracked or
clogged) Replace 10-S37
Expansion valve clogged Replace 10-M16
Temperature Is Not
Controlled Well.
(Temperature Control
Lever Does Not
Function.) Wire poorly fixed Repair 10-S36
Wire wrongly laid Repair 10-S36
Temperature Is Not
Controlled Well.
(Water Valve Does
Not Open As
Specified.) Water valve wrongly opens at max. cool position Replace 10-S37
Cable wrongly set Adjust 10-S36
Cable disconnected Repair 10-S36
Temperature Is Not
Controlled Well. (Air
Mixing Door Does
Not Open As
Specified.) Damper lever wrongly set Repair 10-S36
Cable disconnected Repair 10-S36
Temperature Is Not
Controlled Well.
(Heater Hose Is Not
Laid As Specified.) Heater hose caught Repair 10-S37
Heater hose twisted or bent Repair 10-S37
Water Leakage Drain hose disconnected Repair 10-S30
Drain hose bent Replace 10-S30
Heater hose in poor connection Repair 10-S37
Symptom Probable Cause Solution
Reference
Page
KiSC issued 05, 2012 A