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Check code
[F04] / [19]
(TCC-L / AI-NET)
Check code name
TD1 sensor error
Cause of operation
TD1 sensor Open/Short
This check code means detection of Open/Short of TD1 sensor.
Check disconnection of connector (TD1 sensor: CN502, White) and characteristics of sensor resistance value.
(Refer to Outdoor unit temperature sensor characteristics.)
If sensor is normal, replace outdoor I/F P.C. board.
Check code
[F05] / [A1]
(TCC-L / AI-NET)
Check code name
TD2 sensor error
Cause of operation
TD2 sensor Open/Short
This check code means detection of Open/Short of TD2 sensor.
Check disconnection of connector (TD2 sensor: CN503, Pink) and characteristics of sensor resistance value.
(Refer to Outdoor unit temperature sensor characteristics.)
If sensor is normal, replace outdoor I/F P.C. board.
Check code
[F06] / [18]
(TCC-L / AI-NET)
Check code name
TE1 sensor error
Cause of operation
TE1 sensor Open/Short
This check code means detection of Open/Short of TE1 sensor.
Check disconnection of connector (TE1 sensor: CN505, Green) and characteristics of sensor resistance value.
(Refer to Outdoor unit temperature sensor characteristics.)
If sensor is normal, replace outdoor I/F P.C. board.
Check code
[F07] / [18]
(TCC-L / AI-NET)
Check code name
TL sensor error
Cause of operation
TL sensor Open/Short
This check code means detection of Open/Short of TL sensor.
Check disconnection of connector (TL sensor: CN521, White) and characteristics of sensor resistance value.
(Refer to Outdoor unit temperature sensor characteristics.)
If sensor is normal, replace outdoor I/F P.C. board.
Check code
[F08] / [1b]
(TCC-L / AI-NET)
Check code name
TO sensor error
Cause of operation
TO sensor Open/Short
This check code means detection of Open/Short of TO sensor.
Check disconnection of connector (TO sensor: CN507, Yellow) and characteristics of sensor resistance value.
(Refer to Outdoor unit temperature sensor characteristics.)
If sensor is normal, replace outdoor I/F P.C. board.
Check code
[F10] / [0C]
(TCC-L / AI-NET)
Check code name
Indoor TA sensor error
Cause of operation
TA sensor Open/Short
This check code means detection of Open/Short of TA sensor.
Check disconnection of connector (TA sensor: CN104, Yellow) and characteristics of sensor resistance value. (Refer
to Outdoor unit temperature sensor characteristics.)
If sensor is normal, replace indoor P.C. board.
Check code
[F12] / [A2]
(TCC-L / AI-NET)
Check code name
TS sensor error
Cause of operation
TS1, TS2 sensor Open/Short
This check code means detection of Open/Short of TS sensor.
Check disconnection of connector (TS1 sensor: CN504, White TS2 sensor: CN522, Black) and characteristics of
sensor resistance value. (Refer to Outdoor unit temperature sensor characteristics.)
If sensor is normal, replace outdoor I/F P.C. board.
Check code
[F13] / [43]
(TCC-L / AI-NET)
Check code name
TH sensor error
Cause of operation
IGBT built-in sensor error in A3-IPDU
Sub-code: 01: Compressor 1 side 02: Compressor 2 side
This check code means IGBT built-in temperature sensor error.
Check connection of connectors CN06 on IPDU P.C. board and CN600 on I/F P.C. board.
If sensor is normal, replace IPDU P.C. board.
Sub-code: 01: TS1 sensor 02 : TS2 sensor