Toshiba MMW-UP0271LQ-E Service Manual page 62

Check code
Main Outdoor 7-segment display
remote
Check
Sub-code
controller
code
L05 — —
No. of priority
indoor units
L06 L06
L07 — —
L08 L08 —
L09 — —
L10 L10 —
L20 — —
02: Switch
setting
L23 L23
trouble of
outdoor unit
L28 L28 —
P.C.board
Compressor Fan Motor
1 2 1
01 O
02 O
03 O O
08 O
09 O O
0A O O
0B O O O
10
11 O
12 O
13 O O
18 O
L29 L29 19 O O
1A O O
1B O O O
Circle (O): Trouble
P.C. board
00
Location
Description
of
detection
I/F Duplicated
priority indoor
unit (as
displayed on
priority indoor
unit)
I/F Duplicated
priority indoor
unit (as
displayed on
indoor unit other
than priority
indoor unit)
Indoor unit Connection of
group control
cable to
standalone
indoor unit
Indoor unit Indoor group /
addresses not
set
Indoor unit Indoor capacity
not set
I/F Outdoor
capacity not set
Network Duplicated
adaptor central control
Indoor unit address
I/F SW setting
trouble
I/F Too many
outdoor units
connected
I/F Trouble in No.
of P.C. board
2
O
O
O
O
O
O
O
O
I/F The number of
inverter P.C.
boards is
abnormal.
Indoor unit (including Hot Water Module)
Check code detection
System status
condition(s)
All stop More than one indoor units
have been set up as priority
indoor unit.
All stop More than one indoor units
have been set up as priority
indoor unit.
Stop of There is at least one
corresponding standalone indoor unit to
unit which group control cable is
connected.
Stop of Address setting has not
corresponding been performed for indoor
unit units.
Stop of Capacity setting has not
corresponding been performed for indoor
unit unit.
All stop Initial setting of I/F P.C.
board has not been
implemented.
All stop There is duplication in
central control address
setting.
All stop Switch setting trouble of
outdoor units when HWM
(Hot Water module) is
connected.
All stop There are more than 5
outdoor units.
All stop Insufficient number of P.C.
boardare detected when
power is turned on.
All stop When there is much number
of an inverter P.C. board to
model setting of an interface
P.C. board.
– 62 –
Check items (locations)
• Check display on priority
indoor unit.
• Check displays on priority
indoor unit and outdoor
unit.
• Check indoor addresses.
• Check indoor addresses.
Note:
This code is displayed
when power is turned on
for the first time after
installation.
Set indoor capacity. (DN =
11)
• Check model setting of
P.C. board for servicing
outdoor I/F P.C. board.
• Check central control
addresses.
• Check setting of SW09 or
SW103 Bit 4 on outdoor
I/F P.C. board. (SW09 or
SW103 Bit 4:ON)
• 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).
• 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.
• 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.