– 133 –
Check code Display of receiving unit
Typical fault site Description of error
Outdoor 7-segment display TCC-LINK
central control
or main remote
controller
display
Indicator light block
Sub-code Flash
Ready
Timer
Operation
F24 High pressure sensor (Pd) errorALT—F24
Output voltage of high pressure sensor (Pd) is zero
or provides abnormal readings when compressors
have been turned off.
H05
Outdoor discharge temperature
sensor (TD1) connection error
—H05
Wiring/installation error or detachment of outdoor
discharge temperature sensor (TD1) has been
detected.
H15
Outdoor discharge temperature
sensor (TD2) connection error
—H15
Wiring/installation error or detachment of outdoor
discharge temperature sensor (TD2) has been
detected.
H25
Outdoor discharge temperature
sensor (TD3) connection error
—H25
Wiring/installation error or detachment of outdoor
discharge temperature sensor (TD3) has been
detected.
P07
Temperature sensor built into IGBT (TH) detects
overheating.
P07 ALT Heat sink overheating error
01: Compressor 1
02: Compressor 2
03: Compressor 3
01: Compressor 1
02: Compressor 2
03: Compressor 3
L04 SIM
Duplicated outdoor refrigerant line
address
—L04
Identical refrigerant line address has been assigned
to outdoor units belonging to different refrigerant
piping systems.
P05 ALT
Inverter DC voltage (Vdc) error
MG-CTT error
P05
Open phase is detected when power is turned on.
Inverter DC voltage is too high (overvoltage) or too
low (undervoltage).
L06 SIM
More than one indoor unit has been set up as
priority indoor unit.
Duplicated priority indoor unit (as
displayed on indoor unit other than
priority indoor unit)
Outdoor EEPROM is faulty (alarm and shutdown for
header unit and continued operation for follower unit)
F31F31 SIM
Outdoor EEPROM error—
Temperature sensor for oil level detection (TK1-5)
detects abnormally low oil level.
H07H07
Low oil level protection—
Address setting has not been performed for one or
more indoor units (also detected at indoor end).
(L08) SIML08
Indoor group address not set—
Outdoor unit capacity has not been set (after P.C.
board replacement).
L10 SIML10
Outdoor capacity not set—
Cooling/heating cycle error resulting from piping
error is detected.
Cooling/heating selection unit
error
L18 SIML18
—
Too many outdoor units
connected
L28 More than 3 outdoor units have been connected.SIML28
—
There are insufficient number of IPDUs
(P.C. boards) in inverter box.
L29 Error in number of IPDUsSIML29
Old model outdoor unit (prior to 3 series) has been
connected.
Outdoor model incompatibility
error
L17 SIML17
—
Indoor unit has been shut down for external error
input in one refrigerant line (detected by indoor unit).
Indoor external error input
(interlock)
L30Detected indoor unit No. SIML30
—— ——L31 Other IPDU error
Open phase/power failure00: Open phase detected
More than one indoor unit has been set up as priority
indoor unit.
Duplicated priority indoor unit (as
displayed on priority indoor unit)
Number of priority indoor
units (check code L05 or
L06 depending on
individual unit)
L05 SIM
L06
Indoor unit has been shutdown in one refrigerant line
due to detection of overflow (detected by indoor unit).
(P10) ALTP10
Indoor unit overflowIndoor unit No. detected
Outdoor discharge temperature sensor (TD1) has
detected abnormally high temperature.
Outdoor discharge (TD1)
temperature error
P03— ALTP03
Temperature sensor for oil level detection (TK1-5)
has been open/short-circuited.
Error in temperature sensor for
oil level detection (TK1-5)
01: TK1 sensor error
02: TK2 sensor error
03: TK3 sensor error
04: TK4 sensor error
05: TK5 sensor error
H08H08
No temperature change is detected by temperature
sensor for oil level detection (TK1-5) despite
compressor having been started.
01: TK1 oil circuit error
02: TK2 oil circuit error
03: TK3 oil circuit error
04: TK4 oil circuit error
05: TK5 oil circuit error
H16 Oil level detection circuit errorH16
Low pressure (Ps) sensor detects abnormally low
operating pressure.
Activation of low-pressure
protection
H06H06
—
F23F23 ALT
Output voltage of low pressure sensor (Ps) is zero.Low pressure sensor (Ps) error—
1
O
O
O
O
O
2
O
O
O
O
3
O
O
O
O
A3-IPDU Fan
IPDU
01
02
03
04
05
06
07
08
09
O
O
1
O
O
O
2
O
O
O
O
3
O
O
O
O
A3-IPDU Fan
IPDU
0A
0B
0C
0D
0E
0F
Circle (
O
):
Faulty IPDU
O
O
O
O
O
O
MG-CTT: Magnet contactor
Wiring error in outdoor temperature sensors (TE1, TL)
has been detected.
Outdoor temperature sensor
(TE1, TL) wiring error
F15 ALT—F15
Wiring error in outdoor pressure sensors (Pd, Ps)
has been detected.
Outdoor pressure sensor (Pd, Ps)
wiring error
F16 ALT—F16
Outdoor suction temperature sensor (TS1, TS2) has
been open/short-circuited.
Outdoor suction temperature
sensor (TS1, TS2) error
01: TS1
02: TS2
F12 ALTF12
Outdoor discharge temperature
sensor (TD3) error
F22
Outdoor discharge temperature sensor (TD3) has
been open/short-circuited.
ALT—F22
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