Toshiba MMC-AP0154H-E(-TR), Руководство по обслуживанию

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– 88 –
Check code
Location
of
detection
Description System status
Error detection
condition(s)
Check items (locations)
L18 L18 —
I/F Cool / heat switch
unit error Only the target
unit stopped The heating operation was
performed without the coolonly
setting configured in a cool-
only room where a cool / heat
switch unit is not connected. • Check the remote controller setting.
(DN=“0F”)
• Check the cool / heat switching unit.
• Check the piping connection of the
switching unit.
(Miswiring of discharge gas /
suction gas)
• Check the SVS / SVD valve
miswiring / misinstallation.
L20 — —
Indoor unit Duplicated central
control address
All stop There is duplication in central
control address setting. • Check central control addresses.
• Check network adaptor P.C. board.
L28 L28 —
I/F Too many outdoor
units connected All stop There are more than four
outdoor units. • Check No. of outdoor units
connected (Only up to 4 units per
system allowed).
• Check communication lines
between outdoor units.
• Check for defect in outdoor P.C.
board (I/F).
L29 L29
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 Error in No. of
IPDUs All stop Insufficient number of IPDUs
are detected when power is
turned on. • Check model setting of P.C. board
for servicing outdoor I/F P.C. board.
• Check connection of UART
communication connector.
• Check A3-IPDU, fan IPDU, and I/F
P.C. board for defect.
L30 L30
Detected indoor
address Indoor unit External interlock
of indoor unit
Stop of
corresponding unit • Signal is present at external
error input terminal (CN80)
for 1 minute. When external device is connected
to CN80 connector:
1) Check for defect in external device.
2) Check for defect in indoor P.C.
board.
When external device is not
connected to CN80 connector:
1) Check for defect in indoor P.C.
board.
— — L31
I/F Extended IC error Continued
operation
There is part failure in P.C.
board (I/F). Check outdoor P.C. board (I/F).
P01 — —
Indoor unit Indoor fan motor
error
Stop of
corresponding unit • Check the lock of fan motor
(AC fan).
• Check wiring.
Outdoor 7-segment display
Check
code
Sub-code
Main
remote
controller
SMM-i (Series 4)
Symbol O
signifies site of
IPDU error.
1
O
O
O
O
O
O
O
O
2
O
O
O
O
O
O
O
O
3
O
O
O
O
O
O
O
O
A3-IPDUFan
IPDU
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
80
O
O
O
O
O
O
O
O