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Using indoor unit indicators (receiving unit light block) (wireless type)
To identify the check code, check the 7-segment display on the outdoor unit. To check for check codes not
displayed on the 7-segment display, consult the "List of Check Codes (Indoor Unit)" in "9-2. Troubleshooting
method".
L
g i
t h
b
o l
c
k
C
h
Operation
Timer
Ready
All lights out
Operation
Timer
Ready
Blinking
Operation
Timer
Ready
Blinking
Operation
Timer
Ready
Alternate blinking
Operation
Timer
Ready
Alternate blinking
Operation
Timer
Ready
Alternate blinking
e
c
k
c
o
d
e
–
Power turned off or error in wiring between receiving and indoor units
E01
Faulty reception
E02
Faulty transmission
E03
Loss of communication
E08
Duplicated indoor unit No. (address)
E09
Duplicated master remote controller
E10
Indoor unit inter-MCU communication error
E12
Automatic address starting error
E18
Error or poor contact in wiring between indoor units, indoor power turned off
Error or poor contact in wiring between indoor and outdoor units
E04
(loss of indoor-outdoor communication)
E06
Faulty reception in indoor-outdoor communication (dropping out of indoor unit)
E07
Faulty transmission in indoor-outdoor communication
E15
Indoor unit not found during automatic address setting
E16
Too many indoor units connected / overloading
E20
Detection of refrigerant piping communication error during automatic address setting
E31
IPDU communication error
P01
Indoor AC fan error
P10
Indoor overflow error
P12
Indoor DC fan error
P13
Outdoor liquid backflow detection error
P03
Outdoor discharge (TD) temperature error
P04
Outdoor unit High-pressure SW is activated.
Open phase / power failure
P05
Inverter DC voltage (Vdc) error
P07
Outdoor heat sink overheating error - Poor cooling of electrical component (IGBT) of outdoor unit
P15
Gas leak detection - insufficient refrigerant charging
P19
Outdoor 4-way valve reversing error
P20
Activation of high-pressure protection
P22
Outdoor fan IPDU error
P26
Outdoor G-Tr short-circuit error
P29
Compressor position detection circuit error
P31
Shutdown of other indoor unit in group due to fault (group follower unit error)
F01
Heat exchanger temperature sensor (TCJ) error
F02
Heat exchanger temperature sensor (TC2) error
F03
Heat exchanger temperature sensor (TC1) error
F10
Ambient temperature sensor (TA) error
F11
Discharge temperature sensor (TF) error
: Goes off
: Lighting
C
a
u
s
e
f o
a f
Receiving unit
104
116
: Blinking (0.5 seconds)
u
t l
Error or poor contact in wiring between
receiving and indoor units
Setting error
Indoor unit temperature sensor errors
- Quick Links:
- Service Manual
- Outdoor Unit
- Outdoor Unit
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Table of Contents
Troubleshooting
