MULTI TYPE

Main
remote
controller
P22
P26
P29
Check code
Outdoor 7-segment display
Check
code
P22
P26
P29
Sub-code
0: IGBT circuit
1: Position
detection circuit
error
3: Motor lockup
error
4: Motor current
detection
C: TH sensor
temperature
error
D: TH sensor
error
E: Inverter DC
voltage error
(outdoor fan)
Note:
Although
letters 0 to F
appear at
locations
indicated by
“”, please
ignore them.
01: Compressor
1 side
02: Compressor
2 side
03: Compressor
3 side
01: Compressor
1 side
02: Compressor
2 side
03: Compressor
3 side
AI-NET central
control
remote
controller
1A
14
16
P31 – – 47
Location
of
detection
IPDU
IPDU
IPDU
Indoor
unit
Description
Outdoor fan
IPDU error
G-TR shortcircuit
protection
error
Compressor
position
detection circuit
error
Other indoor
error
(group follower
unit error)
System status
Error detection
condition(s)
All stop (Sub code: 0)
Fan IPDU over current
protection circuit
Flow of current equal to or
greater than the specified
value is detected during
startup of the fan.
All stop (Sub code: 1)
Fan IPDU position detection
circuit
Position detection is not
going on normally.
All stop (Sub code: 3)
Gusty wind, an obstruction,
or another external factor
Speed estimation is not
going on normally.
All stop (Sub code: 4)
Fan IPDU over current
protection circuit
Flow of current equal to or
greater than the specified
value is detected during
operation of the fan.
All stop
All stop
All stop
All stop
All stop
Stop of
corresponding
unit
(Sub code: C)
Higher temperature than the
specified value is detected
during operation of the fan.
(Sub code: D)
The resistance value of the
sensor is infinite or zero
(open or short circuit).
(Sub code: E)
Fan IPDU DC voltage
protection circuit
The DC voltage higher or
lower than the specified
value is detected.
Overcurrent is momentarily
detected during startup of
compressor.
Position detection is not
going on normally.
There is error in other indoor
unit in group, resulting in
detection of E07/L07/L03/
L08.
Check items (locations)
• Check fan motor.
• Check for defect in fan
IPDU P.C. board.
• Check fan motor.
• Check connection of fan
motor connector.
• Check for defect in fan
IPDU P.C. board.
• Check fan motor.
• Check for defect in fan
IPDU P.C. board.
• Check fan motor.
• Check connection of fan
motor connector.
• Check for defect in fan
IPDU P.C. board.
• Check fan motor.
• Check for defect in fan
IPDU P.C. board.
• Check for defect in fan
IPDU P.C. board.
• Check power voltage of
the main power supply.
• Check for defect in fan
IPDU P.C. board.
• Check connection of fan
IPDU P.C. board.
• Check connector
connection and wiring on
A3-IPDU P.C. board.
• Check for defect in
compressor (layer shortcircuit).
• Check for defect in
outdoor P.C. board (A3-
IPDU).
• Check wiring and
connector connection.
• Check for compressor
layer short-circuit.
• Check for defect in A3-
IPDU P.C. board.
• Check indoor P.C. board.
191