Toshiba MMY-MUP0721FT6P-UL Service Manual page 215

Check code
Outdoor 7-segment display
Controller
Check
Sub-code
code
L05 — —
No. of priority
indoor units
L06 L06
L07 — —
L08 L08 —
L09 — —
L10 L10 —
Detected indoor
L11 L11
unit address
Detected indoor
L13 L13
unit address
L17 L17 —
L20 — —
L23 — —
Location
Description System status
of
detection
I/F Duplicated All stop
priority indoor
unit (as
displayed on
priority indoor
unit)
I/F Duplicated All stop
priority indoor
unit (as
displayed on
indoor unit other
than priority
indoor unit)
Indoor unit Connection of Stop of
group control corresponding
cable to unit
standalone
indoor unit
Indoor unit Indoor group / Stop of
addresses not corresponding
set unit
Indoor unit Indoor capacity Stop of
not set corresponding
unit
I/F Outdoor All stop
capacity not set
Flow Selector
I/F All stop
unit installation
trouble
Flow Selector
I/F All stop
unit miswiring
and
misconfigurati
on trouble
I/F Outdoor model All stop
incompatibility
trouble
Network Duplicated All stop
adaptor central control
Indoor unit address
I/F SW setting All stop
trouble
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Check code detection
Check items (locations)
condition(s)
More than one indoor units • Check display on priority
have been set up as priority indoor unit.
indoor unit.
More than one indoor units • Check displays on priority
have been set up as priority indoor unit and outdoor
indoor unit. unit.
There is at least one • Check indoor addresses.
standalone indoor unit to
which group control cable is
connected.
Address setting has not • Check indoor addresses.
been performed for indoor
units. Note:
This code is displayed
when power is turned on
for the first time after
installation.
Capacity setting has not Set indoor capacity. (DN =
been performed for indoor 11)
unit.
Initial setting of I/F P.C. • Check model setting of
board has not been P.C. board for servicing
implemented. outdoor I/F P.C. board.
There is no connection • Check connection of the
to Flow Selector unit, communication line
and indoor unit is not between indoor unit and
set to "cooling only". FS unit.
• Check cooling-only
setting of indoor units.
• Check if FS unit is
installed correctly.
• Check FS unit address
• No indoor unit is connected
setting of indoor unit.
to No.1 port of FS unit
• Check FS unit port
Multi-port type.
address setting of indoor
• A number that is one larger
unit.
than the port address of the
• Check FS unit port
indoor unit for which
combining branches
"combining branches" is
settings of indoor units.
set. (Example; If the port
• Check group setting of
address of the indoor unit
indoor unit.
for which "combining
• Check PC board defects
branches" is set to 3, 4
of indoor unit.
must not be set)
• Check cooling-only
• Multiple remote controller
setting of indoor units.
groups are set to one port
of the FS unit, and different
port address is set for one
of the groups.
• Same address is set for
different FS units.
Outdoor unit that cannot be • Check the model name of
connected is connected. the outdoor unit.
There is duplication in • Check central control
central control address addresses.
setting.
Outdoor P.C. board (I/F) • Check switch setting of
does not operate normally. outdoor P.C. board (I/F).