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Check code
Outdoor 7-segment display
Sub-code
F24
—
F25
—
F26
—
F31
—
01: Compressor 1
H01
02: Compressor 2
03: Compressor 3
01: Compressor 1
02: Compressor 2
H02
03: Compressor 3
01: Compressor 1
02: Compressor 2
H03
03: Compressor 3
H05
—
H05
—
H06
—
H07
—
01: TK1 sensor error
02: TK2 sensor error
03: TK3 sensor error
H08
04: TK4 sensor error
05: TK5 sensor error
H14
—
H15
—
01: TK1 oil circuit error
02: TK2 oil circuit error
H16
03: TK3 oil circuit error
04: TK4 oil circuit error
05: TK5 oil circuit error
H25
—
L02
—
L04
—
Number of priority indoor units
L06
(check code L05 or L06
depending on individual unit)
L08
—
L10
—
L17
—
L18
—
L28
—
SMMS-i (Series 4)
A3-IPDU Fan
A3-IPDU
IPDU
1 2
3
1 2
3
O
O
01
0A
O
O
O
02
0B
O
O
O
03
0C
L29
O
O
O
04
0D
O
O
O
O
05
0E
O
O
O
O
O
06
0F
O
O
O
O
07
Circle (
):
O
Faulty IPDU
08
O
O
09
TCC-LINK
central control
Typical fault site
or main remote
controller
display
F24
High pressure sensor (Pd) error
F25
Indoor TA(TWI) sensor error
F26
Indoor TC2(TWO) sensor error
F31
Outdoor EEPROM error
H01
Compressor breakdown
H02
Compressor error (Lock)
H03
Current detection circuit error
Compressor 1 case thermo
H04
activation
Outdoor discharge temperature
H05
sensor (TD1) wiring error
Activation of low-pressure
H06
protection
Activation of low-pressure
H07
protection
Error in temperature sensor for
H08
oil level detection (TK1-5)
Compressor 2 case thermo
H14
activation
Outdoor discharge temperature
H15
sensor (TD2) wiring error
H16
Oil level detection circuit error
Outdoor discharge temperature
H25
sensor (TD3) wiring error
L02
Outdoor unit combination error
Duplicated outdoor
L04
refrigerant line address
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)
(L08)
SIM Indoor group address not set
L10
Outdoor capacity not set
Outdoor model incompatibility
L17
error
L18
FS (Flow Selector) unit error
L28
Too many outdoor units connected More than four outdoor units have been connected.
Fan
IPDU
O
O
O
L29
Error in number of IPDUs
O
O
O
Output voltage of high pressure sensor (Pd) is zero or provides
abnormal readings when compressors have been turned off.
• Check connection of TA sensor connector.
• Check resistance characteristics of TA sensor.
• Check connection of TC2 sensor connector.
• Check resistance characteristics of TC2 sensor.
Outdoor EEPROM is faulty (alarm and shutdown for header unit
and continued operation for follower unit)
Overcurrent of the inverter current (Idc) detection circuit was
detected.
Compressor lock was detected.
Current error was detected while the compressor was stopped.
Compressor 1 case thermo was activated for protection.
Wiring / installation error or detachment of outdoor discharge
temperature sensor (TD1) has been detected.
Low pressure (Ps) sensor detects abnormally low operating
pressure.
Temperature sensor for oil level detection (TK1-5) detects
abnormally low oil level.
Temperature sensor for oil level detection (TK1-5) has been
open / short-circuited.
Compressor 2 case thermo was activated for protection.
Wiring / installation error or detachment of outdoor discharge
temperature sensor (TD2) has been detected.
No temperature change is detected by temperature sensor for oil
level detection (TK1-5) despite compressor having been started.
Wiring / installation error or detachment of outdoor discharge
temperature sensor (TD3) has been detected.
Check the soft ware version on the I/F PC board of the outdoor
unit.
Identical refrigerant line address has been assigned to outdoor
units belonging to different refrigerant piping systems.
More than one indoor unit has been set up as priority indoor unit.
More than one indoor unit has been set up as priority indoor unit.
Address setting has not been performed for one or more indoor
units (also detected at indoor end).
Outdoor unit capacity has not been set (after P.C. board
replacement).
Old model outdoor unit (prior to 3 series) has been connected.
Cooling / heating cycle error resulting from piping error is
detected.
There are insufficient number of IPDUs (P.C. boards) in inverter
box.
– 41 –
Indoor unit (including Hot Water Module)
Description of error
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Table of Contents
Troubleshooting
