Toshiba MMD-AP0076BHP-E Service Manual page 68

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
SMMS-i (Series 4)
A3-IPDU
1 2 3
E31 E31
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
Symbol O signifies
site of IPDU error.
F01
F02
F03
F04 F04
F05 F05
TE1 sensor error
02:
TE2 sensor error
F06 F06
Location
Description
of
detection
I/F IPDU
communication
error
Fan
IPDU
Indoor Indoor TCJ
unit sensor error
Indoor Indoor TC2
unit sensor error
Indoor Indoor TC1
unit sensor error
I/F TD1 sensor
error
I/F TD2 sensor
error
I/F TE1/TE2
sensor error
–
Error detection
System status
condition(s)
All stop Communication is disrupted
between IPDUs (P.C.
boards) in inverter box.
Stop of Sensor resistance is infinity
corresponding or zero (open / short circuit).
unit
Stop of Sensor resistance is infinity
corresponding
or zero (open / short circuit).
unit
Stop of Sensor resistance is infinity
corresponding or zero (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).
–
68
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).