Toshiba MMW-UP0271LQ-E - Page 62

– 62 –
Check code
Location
of
detection
Description System status
Check code detection
condition(s)
Check items (locations)
• Check setting of SW09 or
SW103 Bit 4 on outdoor
I/F P.C. board. (SW09 or
SW103 Bit 4:ON)
SW setting
trouble
02: Switch
setting
trouble of
outdoor unit
I/F All stop Switch setting trouble of
outdoor units when HWM
(Hot Water module) is
connected.
L23 L23
Main
remote
controller
Outdoor 7-segment display
Check
code
Sub-code
• Check No. of outdoor units
connected (Only up to 5
units per system allowed).
• Check communication
lines between outdoor
units.
• Check for failure in outdoor
P.C. board (I/F).
Too many
outdoor units
connected
I/F All stop There are more than 5
outdoor units.
L28 L28 —
• Check I/F P.C.board
exchange has been
correctly performed as a
procedure.
• Check for failure in I/F P.C.
board.
• Check for inverter P.C.
board for compressors and
inverter P.C. board for fan.
The number of
inverter P.C.
boards is
abnormal.
I/F00 All stop When there is much number
of an inverter P.C. board to
model setting of an interface
P.C. board.
• Check model setting of
P.C. board for servicing
outdoor I/F P.C. board.
• Check connection of UART
communication connector.
• Check compressor P.C.
board, fan P.C. board, and
I/F P.C. board for failure.
Trouble in No.
of P.C. board
I/F All stop Insufficient number of P.C.
boardare detected when
power is turned on.
L29 L29
Circle (O): Trouble
P.C. board
• Check model setting of
P.C. board for servicing
outdoor I/F P.C. board.
Outdoor
capacity not set
I/F All stop Initial setting of I/F P.C.
board has not been
implemented.
L10 L10 —
• Check central control
addresses.
Duplicated
central control
address
Network
adaptor
Indoor unit
All stop There is duplication in
central control address
setting.
L20 — —
P.C.board
Compressor Fan Motor
01
02
03
08
09
0A
0B
10
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
1212
11
12
13
18
19
1A
1B
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
• Check display on priority
indoor unit.
Duplicated
priority indoor
unit (as
displayed on
priority indoor
unit)
I/F All stop More than one indoor units
have been set up as priority
indoor unit.
L05 — —
• Check displays on priority
indoor unit and outdoor
unit.
Duplicated
priority indoor
unit (as
displayed on
indoor unit other
than priority
indoor unit)
I/FNo. of priority
indoor units
All stop More than one indoor units
have been set up as priority
indoor unit.
L06 L06
• Check indoor addresses.Connection of
group control
cable to
standalone
indoor unit
Indoor unit Stop of
corresponding
unit
There is at least one
standalone indoor unit to
which group control cable is
connected.
L07 — —
• Check indoor addresses.
Note:
This code is displayed
when power is turned on
for the first time after
installation.
Indoor group /
addresses not
set
Indoor unit Stop of
corresponding
unit
Address setting has not
been performed for indoor
units.
L08 L08 —
Set indoor capacity. (DN =
11)
Indoor capacity
not set
Indoor unit Stop of
corresponding
unit
Capacity setting has not
been performed for indoor
unit.
L09 — —
Indoor unit (including Hot Water Module)