Tl Sensor Error; To Sensor Error; Indoor Ta Sensor Error; Ts1 Sensor Error - Toshiba Super MMU-AP0091H Service Manual

Check code name
[F07] / [18]
(d07 / AI-NET)
This error code means detection of Open/Short of TL sensor. Check disconnection of circuit for connection of connec-
tor (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 name
[F08] / [1b]
(d07 / 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 name
[F10] / [0C]
(d07 / AI-NET)
This error code means detection of Open/Short of TA sensor. Check disconnection of circuit for connection of connec-
tor (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 name
[F12] / [A2]
(d07 / 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 tem-
perature 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

165
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