Toshiba MMD-AP0071SH-C Service Manual page 72

Check code
Outdoor 7-segment display
Main
remote
controller Check code
Sub-code
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
H02 H02 01: Compressor 1 side
02: Compressor 2 side
(*1) All stop only in case of the header unit
Detected
Check code name
AI-NET
position
central control
remote controller
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
1d IPDU Compressor error (lock)
MG-SW error
OCR operation
The follower unit continues operation.
Status Error detection condition
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
unit only stops. operate 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.
All stop Over-current was detected
several seconds after header
compressor had started.
Check item (position)
• 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.
• Check compressor error.
• Check power voltage. (AC380–10%, 415V +10%).
• Check cable of compressor and phase-missing.
• Check connector/terminal connection on IPDU P .C. board.
• Check conduction of case heater.
(Check activation error due to liquid stagnation in compressor.)
• Check outdoor P .C. board (IPDU) error.
• Check outdoor MG-SW or OCR.
MG-SW : Magnet Switch, OCR : Over-current Relay