Ducted Type Split Air-Conditioner Units(Inverter Series)
32
Content
symbol
Division
symbol
6
7
8
9
A
H
Ind
oor
L
Mode shock
No main IDU
Power
supply is
insufficient
1-to-more:
number of IDU
is inconsistent
1-to-more:
IDU series is
inconsistent
Alarm due to
bad air
quality
(Fresh air
unit)
d
Malfunction of
exit-tube
temperature
sensor
Malfunction
of humidity
sensor
Malfunction of
jumper cap
Web address
of IDU is
abnormal
PCB of
wired
controller is
abnormal
J
-
Gas-mixing
protection of
4-way valve
High
pressure
ratio
protection
of system
Low pressure
ratio protection
of system
Protection
due to
abnormal
pressure
-
b
Malfunction of
inlet temp
sensor of
gas-liquid
separator
Malfunction
of outlet
temp sensor
of gas-liquid
separator
-
Malfunction of
heat
exchanger
temperature
sensor
-
Clock of
system is
abnormal
P
Drive IPM
module
protection of
compressor
Malfunction
of drive
temperature
sensor of
compressor
Drive IPM high
temperature
protection of
compressor
Desynchronizi
ng protection
of inverter
compressor
-
High-voltage
protection of
compressor’
s drive DC
bus bar
H
Drive IPM
module
protection of
fan
Malfunction
of drive
temperature
sensor of fan
Drive IPM
high
temperature
protection of
fan
Desynchronizi
ng protection
of inverter fan
-
High-voltage
protection of
fan’s drive
DC bus bar
D
ebu
ggi
ng
U
Alarm because
valve is
abnormal
-
Short-circuit
malfunction of
IDU
Malfunction of
pipe-line for
ODU
-
-
C
-
-
Emergency
status of
compressor
Emergency
status of fan
-
Rated
capacity is
too high
Statu
s
A
Heat pump
function setting
Quiet mode
setting
Vacuum pump
mode
IPLV test
EU AA level
EER test
mode
Heating
n
Inquiry of
project code of
IDU
Inquiry of
malfunction
Inquiry of
parameters
-
Heat pump
unit
Heating only
unit
