Toshiba MML-AP0124H2UL Service Manual page 60

Check code
Main Outdoor 7-segment display
remote
Check
Sub-code
control
code
A3-IPDU Fan-IPDU
1 2 1
01 O
02 O
03 O O O
08 O
09 O O
0A O O
0B O O
10
11 O
E31 E31
12 O
13 O O O
18 O
19 O O
1A O O
1B O O
Circle (O): IPDU trouble
80
F01 — —
F02 — —
F03 — —
F04 F04 —
F05 F05 —
01: TE1 sensor trouble
02: TE2 sensor trouble
F06 F06
01: TL1 sensor trouble
F07 F07
F08 F08 —
01: TG1 sensor trouble
02: TG2 sensor trouble
F09 F09
F10 — —
F11 — —
Location
of
Description
detection
I/F IPDU
communication
2
trouble
O
O
O
O
O
O
O
O
Communication
trouble between
MCU and Sub MCU
Indoor Indoor TCJ
unit sensor trouble
Indoor Indoor TC2
unit sensor trouble
Indoor Indoor TC1
unit sensor trouble
I/F TD1 sensor
trouble
I/F TD2 sensor
trouble
I/F TE1/TE2
sensor trouble
I/F TL1 sensor
trouble
I/F TO sensor
trouble
I/F TG1/TG2
Indoor Indoor TA
unit sensor trouble
Indoor Indoor TF
unit sensor trouble
Trouble detection
System status
condition(s)
All stop Communication is disrupted
between IPDUs (P.C.
boards) in inverter box.
All stop Communication between MCU and
Sub MCU stopped.
Stop of Sensor resistance is infinity or zero
corresponding (open/short circuit).
unit
Stop of Sensor resistance is infinity or zero
corresponding (open/short circuit).
unit
Stop of Sensor resistance is infinity or zero
corresponding (open/short circuit).
unit
All stop Sensor resistance is infinity or zero
(open/short circuit).
All stop Sensor resistance is infinity or zero
(open/short circuit).
All stop Sensor resistance is infinity or zero
(open/short circuit).
All stop Sensor resistance is infinity or zero
(open/short circuit).
All stop Sensor resistance is infinity or zero
(open/short circuit).
All stop Sensor resistance is infinity or zero
(open/short circuit).
Stop of Sensor resistance is infinity or zero
corresponding (open/short circuit).
unit
Stop of Sensor resistance is infinity or zero
corresponding (open/short circuit).
unit
– 60 –
Check items (locations)
• Check wiring and connectors
involved in communication
between IPDU-I/F P.C. board for
bad contact or broken wire.
• Check for defect in outdoor P.C.
board (I/F, A3-IPDU or Fan IPDU).
• Check for external noise.
• Operation of power supply reset
(OFF for 60 seconds or more)
• Outdoor I/F PC board trouble check.
• Check connection of TCJ sensor
connector and wiring.
• Check resistance characteristics
of TCJ sensor.
• Check for defect in indoor P.C.
board.
• Check connection of TC2 sensor
connector and wiring.
• Check resistance characteristics
of TC2 sensor.
• Check for defect in indoor P.C.
board.
• Check connection of TC1 sensor
connector and wiring.
• Check resistance characteristics
of TC1 sensor.
• Check for defect in indoor P.C.
board.
• Check connection of TD1 sensor
connector.
• Check resistance characteristics
of TD1 sensor.
• Check for defect in outdoor P.C.
board (I/F).
• Check connection of TD2 sensor
connector.
• Check resistance characteristics
of TD2 sensor.
• Check for defect in outdoor P.C.
board (I/F).
• Check connection of TE1/TE2
sensor connectors.
• Check resistance characteristics
of TE1/TE2 sensors.
• Check for defect in outdoor P.C.
board (I/F).
• Check connection of TL1/TL2/TL3
sensor connector.
• Check resistance characteristics
of TL1/TL2/TL3 sensor.
• Check for defect in outdoor P.C.
board (I/F).
• Check connection of TO sensor
connector.
• Check resistance characteristics
of TO sensor.
• Check for defect in outdoor P.C.
board (I/F).
• Check connection of TG1/TG2
sensor connectors.
• Check resistance characteristics
of TG1/TG2 sensors.
• Check for defect in outdoor P.C.
board (I/F).
• Check connection of TA sensor
connector and wiring.
• Check resistance characteristics
of TA sensor.
• Check for defect in indoor P.C.
board.
• Check connection of TF sensor
connector and wiring.
• Check resistance characteristics
of TF sensor.
• Check for defect in indoor P.C.
board.