Ducted Type Split Air-Conditioner Units(Inverter Series)
33
Content
symbol
Division
symbol
C
L
E
F
J
P
Ind
oor
L
Models for IDU
and ODU are not
matched
-
-
-
-
-
d
Abnormal setting
for capacity
button
Malfunction of
air-outlet
temperature
sensor(Fresh air
unit)
Malfunction of
indoor CO
2
sensor (fresh
air unit)
-
-
-
E
Drop protection
of discharge
temperature
sensor of
compressor 1
-
-
-
-
-
F
-
-
-
-
-
Malfunction of
DC motor
J
-
High-pressure
protection
-
-
-
-
P
Drive current
detection circuit
malfunction of
compressor
Low-voltage
protection of
compressor’s
drive DC bus bar
Phase-lacking
of inverter
compressor
Drive charging
circuit malfunction
of compressor
Failure startup
of inverter
compressor
AC current
protection of
inverter
compressor
H
Drive current
detection circuit
malfunction of
fan
Low-voltage
protection of
fan’s drive DC
bus bar
Phase-lacking
of inverter fan
Drive charging
circuit malfunction
of fan
Failure startup
of inverter fan
AC current
protection of
inverter fan
D
ebu
ggi
ng
U
Setting of main
IDU is
successful
Wrong
button-dial
Charging of
refrigerant is
invalid
-
-
-
C
Malfunction of
lack of main
control unit
Rated capacity
is too low
-
Malfunction of
multiple main
control units
Malfunction of
multiple main
wired
controllers
Malfunction of
multiple main
wired
controllers
Statu
s
A
Cooling
Charging
refrigerant
automatically
Charging
refrigerant
manually
Fan
Alarm for
cleaning filter
Debugging
confirmation for
startup of unit
n Cooling only unit
-
Negative sign
code
Fan model
-
-
Content
symbol
Division
symbol
U
b
d
n
y
Debugging C
Communication
malfunction
between IDU
and the
receiving lamp
plate
Overflow
distribution of IP
address
-
-
-
Status
A
Long-distance
emergency
stop
Emergency stop
of operation
Limit operation
-
-
