Th Sensor Error; Outdoor Temp Sensor Miscabling - Toshiba Super MMU-AP0091H Service Manual

Check code name
[F13] / [43]
(d07 / AI-NET)
Sub-code: 01: Compressor 1 side 02: Compressor 2 side
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.
Check code name
[F15] / [18]
(d07 / AI-NET)
Are installed positions of
TE1 sensor and TL sensor correct?
YES
Are connection of TE1 sensor connector
and TL sensor connector normal?
YES
Are resistance characteristics of
TL sensor and TE1 sensor normal?
YES
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 name

TH sensor error

Check code name

Outdoor temp sensor miscabling

(TE1, TL)
NO
Outdoor I/F P.C. board
TE1 sensor : CN505, Green
TL sensor : CN521, White
NO
NO
Outdoor unit temperature sensor characteristics
See TE1 sensor : Characteristics-5
See TL sensor : Characteristics-2.
IGBT built-in sensor error in A3-IPDU
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
166
Cause of operation
Cause of operation
Correct installed positions of
TE1 sensor and TL sensor.
Correct connection of connectors.
Correct connection of connectors.