Toshiba SUPER MMK-AP0073H (IN) Service Manual page 89

Check code
[F07] / [18]
(Current code / AI-NET)
This error code means detection of Open/Short of TL sensor.
Check disconnection of circuit for connection 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]
(Current code / AI-NET)
This error code means detection of Open/Short of TO sensor.
Check disconnection of circuit for connection 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]
(Current code / AI-NET)
This error code means detection of Open/Short of TA sensor.
Check disconnection of circuit for connection of connector (TA sensor: CN104, White) 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]
(Current code / AI-NET)
This error code means detection of Open/Short of TS1 sensor.
Check disconnection of circuit for connection of connector (TS1 sensor: CN504, 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 name
TL sensor error
Check code name
TO sensor error
Check code name
Indoor TA sensor error
Check code name
TS1 sensor error
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Cause of operation
TL sensor Open/Short
Cause of operation
TO sensor Open/Short
Cause of operation
TA sensor Open/Short
Cause of operation
TS1 sensor Open/Short