Toshiba SUPER MMK-AP0073H (IN) Service Manual page 64

Check code
Main
Outdoor 7-segment display
remote
controller Check code Sub-code
F07 F07 —
F08 F08 —
F10 — —
F12 F12 —
F13 F13 01: Compressor 1 side
02: Compressor 2 side
F15 F15 —
F16 F16 —
F23 F23 —
F24 F24 —
F29 — —
F31 F31 —
H01 H01 01: Compressor 1 side
02: Compressor 2 side
(*1) All stop only in case of the header unit. The follower unit continues operation.
Detected
AI-NET Check code name
position
central control
remote controller
18 I/F TL sensor error
1b I/F TO sensor error
OC Indoor Indoor TA sensor error
A2 I/F TS1 sensor error
43 IPDU TH sensor error
18 I/F Outdoor temp sensor
miscabling (TE1, TL)
43 I/F Outdoor pressure sensor
miscabling (Pd, Ps)
43 I/F Ps sensor error
43 I/F Pd sensor error
12 Indoor Indoor other error
1C I/F Outdoor EEPROM error
1F IPDU Compressor breakdown
Status Error detection condition
All stop • Resistance value of sensor is
infinite or zero (Open/Short).
All stop • Resistance value of sensor is
infinite or zero (Open/Short).
Corresponding • Resistance value of sensor is
unit only stops. infinite or zero (Open/Short).
All stop • Resistance value of sensor is
infinite or zero (Open/Short).
All stop • Resistance value of sensor is
infinite or zero (Open/Short).
All stop During operation of compressor in
HEAT mode, the TE1 detection temp
was higher than that of TL by the
specified value continued for 3
minutes or more.
All stop High-pressure Pd sensor and low-
pressure Ps sensor were exchanged,
or output voltages of both sensors are
zero.
All stop Output voltage of Ps sensor was zero.
All stop Output voltage of Pd sensor was zero.
(Sensor Open)
Pd > 4.15MPa during stop of
compressor
Corresponding Indoor P .C. board did not operate
unit only stops. normally.
All stop (*1) Outdoor P .C. board (I/F) did not
operate normally.
All stop Inverter current detection circuit
detected over-current and stopped.
Check item (position)
• Check connection of TL sensor connector.
• Check characteristics of TL sensor resistance value.
• Check outdoor P .C. board (I/F) error.
• Check connection of TO sensor connector.
• Check characteristics of TO sensor resistance value.
• Check outdoor P .C. board (I/F) error.
• Check connection/wiring of TA sensor connector.
• Check characteristics of TA sensor resistance value.
• Check indoor P .C. board error.
• Check connection of TS1 sensor connector.
• Check characteristics of TS1 sensor resistance value.
• Check outdoor P .C. board (I/F) error.
• IGBT built-in temp sensor error
→ Exchange IPDU P .C. board.
• Check installation of TE1 sensor and TL sensor.
• Check characteristics of TE1 and TL sensor resistance value.
• Check outdoor P .C. board (I/F) error.
• Check connection of high-pressure Pd sensor connector.
• Check connection of low-pressure Ps sensor connector.
• Check pressure sensors Pd and Ps error.
• Check outdoor P .C. board (I/F) error.
• Check compression error of compressor.
• Misconnection of Ps sensor and Pd sensor connectors
• Check connection of Ps sensor connector.
• Check Ps sensor error.
• Check compression error of compressor.
• Check 4-way valve error.
• Check outdoor P .C. board (I/F) error.
• Check SV4 circuit error.
• Check connection of Pd sensor connector.
• Check Pd sensor error.
• Check outdoor P .C. board (I/F) error.
• Check indoor P .C. board error (EEPROM error).
• Check power voltage.
• Check power noise.
• Check outdoor P .C. board (I/F) error.
• Check power voltage. (AC220–240V ± 10%).
• Check compressor error.
• Check cause of abnormal overload operation.
• Check outdoor P .C. board (IPDU) error.