Toshiba Carrier MMU-AP0074HPUL, Service Manual

Page: 65 / 105

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