– 65 –
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
L29
L29
Symbol O
signifies site of
IPDU error.
I/F
Error in No. of
IPDUs
All stop
Insufficient number of IPDUs
are detected when power is
turned on.
• Check model setting of
P.C. board for servicing
outdoor I/F P.C. board.
• Check connection of UART
communication connector.
• Check A3-IPDU, fan IPDU,
and I/F P.C. board for
defect.
L30
L30
L31
Detected indoor
address
Indoor
unit
External
interlock of
indoor unit
Stop of
corresponding
unit
• Signal is present at
external error input
terminal (CN213) for 1
minute.
When external device is
connected to CN213
connector:
1) Check for defect in
external device.
2) Check for defect in indoor
P.C. board.
When external device is not
connected to CN213
connector:
1) Check for defect in indoor
P.C. board.
–
–
I/F
Extended IC
error
Continued
operation
There is part failure in P.C.
board (I/F).
Check outdoor P.C. board
(I/F).
P01
–
–
Indoor
unit
Indoor fan
motor error
Stop of
corresponding
unit
• Check the lock of fan motor
(AC fan).
• Check wiring.
P03
P03
–
I/F
Discharge
temperature
TD1 error
All stop
Discharge temperature (TD1)
exceeds 239°F(115°C)
• Check outdoor service
valves (gas side, liquid
side) to confirm full
opening.
• Check outdoor PMVs
(PMV1, 2, 4) for clogging.
• Check resistance
characteristics of TD1
sensor.
• Check for insufficiency in
refrigerant quantity.
• Check for defect in 4-way
valve.
• Check for leakage of SV4
circuit.
• Check SV4 circuit (wiring
or installation error in
SV41, SV42 or SV43).
A3-IPDU Fan
IPDU
O
O
O
O
O
O
O
O
2 3
1
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
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