Toshiba SMMS-u MMY-MUP0801HT8 Quick Reference page 47

Check code
Main Outdoor 7-segment display
remote
Check
Sub-code
controller
code
1∗: Fan P.C.
board 1
P22 P22
2∗: Fan P.C.
board 2
1∗: Compressor
1 side
2∗: Compressor
2 side
P26 P26
1∗: Compressor
1 side
P29 P29 2∗: Compressor
2 side
P31 — —
Check codes Detected by Central Control Device
Check code
Main Outdoor 7-segment display
remote
Check
Sub-code
controller
code
C05 —
C06 —
C12 —
Differs according to
nature of alarm-causing
trouble
P30
(L20 displayed.)
Location
Description
of
detection
Fan INV. Outdoor fan
P.C. board P.C. board
trouble
Compressor IPM,
P.C. board Compressor
shortcircuit
protection
trouble
Compressor Compressor
P.C. board position
detection circuit
trouble
Indoor unit Other indoor
trouble
(group follower
unit trouble)
Location
Description
of
detection
Central Central control
control device
device transmission
trouble
Central Central control
control device reception
device trouble
General- Batch alarm
purpose for general-
device purpose
I/F device
control interface
Central Group control
control follower unit
device trouble
Duplicated
central control
address
Check code detection
System status
condition(s)
All stop Protected operation of Fan
inverter P.C. board
All stop Overcurrent is momentarily
detected during startup of
compressor.
All stop Position detection is not
going on normally.
Stop of There is trouble in other
corresponding indoor unit in group,
unit resulting in detection of
E07/L07/L03/L08.
Check code detection
System status
condition(s)
Continued Central control device is
operation unable to transmit signal.
Continued Central control device is
operation unable to receive signal.
Continued Trouble signal is input to
operation control interface for general-
purpose devices.
Continued Trouble occurs in follower
operation unit under group control.
([P30] is displayed on central
control remote controller.)
Continued There is duplication in
operation central control addresses.
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Check items (locations)
• Check fan motor.
• Check for failure in fan
P.C. board.
• Check connection of fan
motor connector.
• Check power voltage of
the main power supply.
• Check connector
connection and wiring on
compressor P.C. board.
• Check for failure in
compressor (layer
shortcircuit).
• Check for failure in outdoor
P.C. board ( Compressor).
• Check wiring and
connector connection.
• Check for compressor
layer short-circuit.
• Check for failure in
compressor P.C. board.
• Check indoor P.C. board.
Check items (locations)
• Check for failure in central
control device.
• Check for failure in central
control communication line.
• Check termination
resistance setting.
• Check for failure in central
control device.
• Check for failure in central
control communication line.
• Check terminator resistor
setting.
• Check power supply for
devices at other end of
central control
communication line.
• Check failure in P.C.
boards of devices at other
end of central control
communication line.
• Check trouble input.
• Check check code of unit
that has generated alarm.
• Check address settings.