LiuGong CLG835H, Service Manual

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5-30
Fault Diagnosis and Judgment
January 24, 2017
Overhauling method CLG835H
Maintenance method when no air comes out of air conditioner or air outlet volume is
obviously smaller than the normal volume
Firstly, set air outlet volume to maximum, and listen whether there is a sound of blower operation.
If the blower doesn’t operate, overhaul it in the following order
P18A00033
Blower unit is
not working.
Check
whether
the A/C fuse
is blown
Check every
line and load
for short
circuit.
Wire or load
repaired or
replaced
Check whether
the evaporator
blower impeller
is seized
Measure if
connector clip
of blower unit
is electrified
Select low, medium
and high positions on
corresponding panel,
and respectively check
whether pins #13, #14
and #16 on control
panel are live.
Check
whether the
negative pole is
grounding
The blower unit
is faulty, replace it
The blower unit
is faulty, replace it
The negative wiring
of blower unit is off
The relay or lines of
corresponding gear
on the evaporator
malfunctions.
Control panel or its
circuit failure
Remove foreign
materials
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No Yes