– 189 –
Check code
Location
of
detection
Description System status
Error detection
condition(s)
Check items (locations)
Main
remote
controller
Outdoor 7-segment display
Check
code
Sub-code
P22 P22
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 “
*
”,
pleaseignore them.
IPDU Outdoor fan
IPDU error
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.
• Check fan motor.
• Check for defect in fan
IPDU P.C. board.
All stop (Sub code: 1
)
Fan IPDU position detection
circuit
Position detection is not
going on normally.
• Check fan motor.
• Check connection of fan
motor connector.
• Check for defect in fan
IPDU P.C. board.
All stop (Sub code: 3
)
Gusty wind, an obstruction,
or another external factor
Speed estimation is not
going on normally.
• Check fan motor.
• Check for defect in fan
IPDU P.C. board.
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.
• Check fan motor.
• Check connection of fan
motor connector.
• Check for defect in fan
IPDU P.C. board.
All stop (Sub code: C
)
Higher temperature than the
specified value is detected
during operation of the fan.
• Check fan motor.
• Check for defect in fan
IPDU P.C. board.
All stop (Sub code: D
)
The resistance value of the
sensor is infinite or zero
(open or short circuit).
• Check for defect in fan
IPDU P.C. board.
All stop (Sub code: E
)
Fan IPDU DC voltage
protection circuit
The DC voltage higher or
lower than the specified
value is detected.
• 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.
P26 P26
01: Compressor 1 side
02: Compressor 2 side
03: Compressor 3 side
IPDU G-TR short-
circuit protection
error
All stop Overcurrent is momentarily
detected during startup of
compressor.
• Check connector
connection and wiring on
A3-IPDU P.C. board.
• Check for defect in
compressor (layer short-
circuit).
• Check for defect in
outdoor P.C. board (A3-
IPDU).
P29 P29
01: Compressor 1 side
02: Compressor 2 side
03: Compressor 3 side
IPDU Compressor
position
detection circuit
error
All stop Position detection is not
going on normally.
• Check wiring and
connector connection.
• Check for compressor
layer short-circuit.
• Check for defect in A3-
IPDU P.C. board.
P31 – –
Indoor
unit
Other indoor
error
(group follower
unit error)
Stop of
corresponding
unit
There is error in other indoor
unit in group, resulting in
detection of E07/L07/L03/
L08.
• Check indoor P.C. board.
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