F01
Indoor unit temperature sensor
trouble
s
F02
F03
F10
F11
Heat exchanger temperature sensor (TCJ)
trouble
Heat exchanger temperature sensor (TC2)
trouble
Heat exchanger temperature sensor (TC1)
trouble
Ambient temperature sensor (TA
/TSA
)
trouble
Discharge temperature sensor (TF)
trouble
F04
Outdoor unit temperature
sensor
trouble
s
F05
F06
F07
F08
F12
F13
Discharge temperature sensor (TD1)
trouble
Discharge temperature sensor (TD2)
trouble
Heat exchanger temperature sensor (TE1)
trouble
Liquid temperature sensor (TL
1,TL3
)
trouble
Outside air temperature sensor (TO)
trouble
Suction temperature sensor (TS1
,TS3
)
trouble
Heat sink sensor (TH)
trouble
F15
Wiring
trouble
in heat exchanger sensor (TE1) and liquid temperature sensor (TL
1
)
Outdoor unit temperature sensor wiring/installation
trouble
F16
Wiring
trouble
in outdoor high pressure sensor (P
D
) and low pressure sensor (P
S
)
Outdoor pressure sensor wiring
trouble
F23
Outdoor unit pressure sensor
trouble
s
F24
Low pressure sensor (P
S
)
trouble
High pressure sensor (P
D
)
trouble
F29
trouble
in indoor EEPROM
H01
Outdoor unit compressor-
related
trouble
s
H02
H03
Compressor breakdown
Compressor lockup
Current detection circuit
trouble
H05
Wiring/installation
trouble
or detachment of outdoor discharge temperature sensor (TD1)
H06
Protective shutdown of outdoor
unit
H07
Abnormal drop in low-pressure sensor (P
S
) reading
Abnormal drop in oil level
H08
Trouble
in temperature sensor for oil level detection circuit (TK1
or TK
2)
H15
Wiring/installation
trouble
or detachment of outdoor discharge temperature sensor (TD2)
H16
Oil level detection circuit
trouble
-
Trouble
in outdoor unit TK1
or TK
2
circuit
L03
Duplicated indoor group header unit
L05
Duplicated priority indoor unit (as displayed on priority indoor unit)
L06
Duplicated priority indoor unit (as displayed on indoor unit other than priority indoor unit)
L07
Connection of group control cable to stand-alone indoor unit
L08
Indoor group address not set
L09
Indoor capacity not set
L04
Duplicated outdoor refrigerant line address
L10
Outdoor capacity not set
L20
Duplicated central control address
L29
Trouble
in number of IPDUs
L30
Indoor external interlock
trouble
Cause of
check code
e
d
o
c
k
c
e
h
C
k
c
o
l
b
t
h
g
i
L
Alternate blinking
Operation Timer
Ready
Alternate blinking
Operation Timer
Ready
Operation
Synchronized blinking
Timer
Ready
Operation Timer
Ready
Blinking
Operation
Synchronized blinking
Timer
Ready
Operation
Synchronized blinking
Timer
Ready
L2
3
SW setting mistake
F1
7
F1
8
Outside air suction temperature sensor (TOA)
trouble
Indoor air suction temperature sensor (TRA)
trouble
L0
2
Outdoor unit model unmatched
trouble
- 136 -