Toshiba MMF-AP0156H-E (TR) Service Manual page 65

Check code
Outdoor 7-segment display
Main
remote
Check
controller
Sub-code
code
SMMS (Series 1)
01: A3-IPDU1
error
02: A3-IPDU2
error
03: A3-IPDU1/
A3- IPDU2 error
04: Fan IPDU
error
05: A3-IPDU1 +
Fan IPDU error
06: A3-IPDU2 +
Fan IPDU error
07: All IPDU
error or
Communication
error between
IPDU and I/F
circuit board
or Outdoor I/F
circuit board
error
E31 E31
SMM-i (Series 4)
A3-IPDUFan
IPDU
1 2 3
01
O
02
O
03
O O
04
O
05
O O
06 O O
07 O O O
08
O
09
O O
0A
O O
0B
O O O
0C O
O
0D O
O O
0E O O O
0F O O O O
80
Symbol O
signifies site of
IPDU error.
F01 — —
F02 — —
F03 — —
F04 F04 —
F05 F05 —
01:
TE1 sensor error
02:
F06 F06
TE2 sensor error
F07 F07 —
Location
of
Description
detection
I/F IPDU All stop
communication
error
Indoor unit Indoor TCJ sensor Stop of
error corresponding unit
Indoor unit Indoor TC2 sensor Stop of
error corresponding unit
Indoor unit Indoor TC1 sensor Stop of
error corresponding unit
I/F TD1 sensor error All stop
I/F TD2 sensor error All stop
I/F TE1/TE2 sensor All stop
error
I/F TL sensor error All stop
Error detection
System status
condition(s)
Communication is disrupted
between IPDUs (P.C. boards)
in inverter box.
Sensor resistance is infinity
or zero (open / short circuit).
Sensor resistance is infinity
or zero (open / short circuit).
Sensor resistance is infinity
or zero (open / short circuit).
Sensor resistance is infinity
or zero (open / short circuit).
Sensor resistance is infinity
or zero (open / short circuit).
Sensor resistance is infinity
or zero (open / short circuit).
Sensor resistance is infinity
or zero (open / short circuit).
– 65 –
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.
• 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 TL sensor
connector.
• Check resistance characteristics of
TL sensor.
• Check for defect in outdoor P.C.
board (I/F).