MULTI TYPE

Check code Check code name
Cause
[F15] / [18]
(AI-NET)
Outdoor temp sensor miswiring
(TE1, TL)
1. Misinstallation and misconnection of TE1 sensor
and TL sensor
2. Resistance characteristics error of TE1 sensor and
TL sensor
3. Outdoor P.C. board (I/F) error
Are installed positions
of TE1 sensor and TL
sensor correct?
No
Correct installed positions of
TE1 sensor and TL sensor.
Yes
Outdoor I/F P.C. board
TE1 sensor : CN520, Green
TL sensor : CN523, White
Are connection
of TE1 sensor connector
and TL sensor connector
normal?
No
Correct connection of
connectors.
Yes
Are resistance
characteristics of TL
sensor and TE1 sensor
normal?
No
Correct connection of
connectors.
Yes
* See “Outdoor unit temperature sensor characteristics” on “8-9. Sensor Characteristics”.
Check outdoor I/F P.C. board.
Defect ➝ Replace
TE1 sensor: Outdoor heat exchanger temp sensor
TL sensor: Temp sensor between liquid tanks of outdoor PMV1/2
Check code Check code name
Cause
[F07] / [18]
(AI-NET)
TL sensor error
TL sensor Open/Short
This error code means detection of Open/Short of TL sensor. Check disconnection of circuit for connection of
connector (TL sensor: CN523, White) and characteristics of sensor resistance value. (See “Outdoor unit temperature
sensor characteristics” on “8-9. Sensor Characteristics”.)
If sensor is normal, replace outdoor I/F P.C. board.
Check code Check code name
Cause
[F08] / [1b] TO sensor error TO sensor Open/Short
(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. (See “Outdoor unit temperature
sensor characteristics” on “8-9. Sensor Characteristics”.)
If sensor is normal, replace outdoor I/F P.C. board.
Check code Check code name
Cause
[F10] / [0C] Indoor TA sensor error TA sensor Open/Short
(AI-NET)
This error code means detection of Open/Short of TA sensor. Check disconnection of circuit for connection of
connector (TA sensor: CN104, Yellow) and characteristics of sensor resistance value. (See “Indoor unit temperature
sensor characteristics” on “8-9. Sensor Characteristics”.)
If sensor is normal, replace indoor P.C. board.
Check code Check code name
Cause
[F12] / [A2] TS1 sensor error TS1 sensor Open/Short
(AI-NET)
This error code means detection of Open/Short of TS1 sensor. Check disconnection of circuit for connection of
connector (TS1 sensor: CN505, White) and characteristics of sensor resistance value. (See “Outdoor unit temperature
sensor characteristics” on “8-9. Sensor Characteristics”.)
If sensor is normal, replace outdoor I/F P.C. board.
Check code Check code name
Cause
[F13] / [43] TH sensor error IGBT built-in sensor error in A3-IPDU
(AI-NET)
Sub-code: 01: Compressor 1, 02: Compressor 2, 03: Compressor 3
This error 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.
202