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Content
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0
Division
symbol
Preheat time
of
U
compressor
is insufficient
Communicati
on
malfunction
between
C
IDU, ODU
and IDU's
wired
controller
Unit waiting
A
for
debugging
SE operation
n
setting of
system
Content
symbol
6
Division
symbol
L
Mode shock
Malfunction of
exit-tube
d
temperature
sensor
J
-
Malfunction of inlet
temp sensor of
b
gas-liquid
separator
Drive IPM module
P
protection of
compressor
Drive IPM module
H
protection of fan
1
2
Wrong setting
of ODU's
-
capacity
code/jumper
cap
Communication
malfunction
between main
-
control and
inverter
compressor
driver
Inquiry of
Refrigerant
compressor
recovery
operation
operation of
parameters
after-sales
Setting of
upper limit of
Setting of
IDU/ODU
defrosting
capacity
cycle K1
distribution
ratio
7
8
Power supply
No main IDU
is insufficient
Malfunction of
-
humidity sensor
High pressure
Gas-mixing
ratio
protection of
protection of
4-way valve
system
Malfunction of
outlet temp
sensor of
-
gas-liquid
separator
Malfunction of
Drive IPM
drive
high
temperature
temperature
sensor of
protection of
compressor
compressor
Drive IPM
Malfunction of
high
drive
temperature
temperature
protection of
sensor of fan
fan
22
Ducted Type Split Air-Conditioner Units(Inverter Series)
3
Refrigerant-
-
Communicati
on
malfunction
Malfunction
between main
of lack of IDU
control and
inverter fan
driver
Defrosting
Limit setting
-
capacity/outp
ut capacity
9
1-to-more:
1-to-more: IDU
number of IDU is
inconsistent
inconsistent
Web address
Malfunction of
jumper cap
Low pressure
Protection due
ratio protection of
to abnormal
system
Malfunction of
heat exchanger
temperature
sensor
Desynchronizing
protection of
inverter
compressor
Desynchronizing
protection of
inverter fan
4
5
Wrong
address for
lacking
driving board
protection
of compressor
Alarm
because
project code
of IDU is
inconsistent
Oil-return
Online test
for max.
-
A
H
Alarm due to bad
series is
air quality (Fresh
air unit)
PCB of wired
of IDU is
controller is
abnormal
abnormal
-
pressure
Clock of system
-
is abnormal
High-voltage
protection of
-
compressor's
drive DC bus bar
High-voltage
protection of
-
fan's drive DC
bus bar
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