Toshiba MMW-AP0271LQ-E Service Manual page 54

Check code
Main Outdoor 7-segment display
remote
Check
Sub-code
controller
code
H25 H25 —
L02 L02 —
L03 — —
L04 L04 —
L05 — —
No. of priority
indoor units
L06 L06
L07 — —
L08 L08 —
L09 — —
L10 L10 —
Target indoor
address
L17 L17
L18 L18 —
Location
Description
of
detection
I/F TD3 sensor
miswiring
(incomplete
insertion)
Indoor Outdoor unit
unit model mismatch
error
Indoor Duplicated
unit indoor header
unit
I/F Duplicated
outdoor line
address
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
I/F Outdoor unit
model mismatch
error
I/F Cool / heat
switch unit error
Error detection
System status
condition(s)
All stop Air discharge temperature
(TD3) does not increase
despite compressor 3 being
in operation.
Only the target An error was found on the
unit stopped outdoor unit model.
Stop of There is more than one
corresponding unit header unit in group.
All stop There is duplication in line
address setting for outdoor
units belonging to different
refrigerant piping systems.
All stop More than one indoor unit
has been set up as priority
indoor unit.
All stop More than one indoor unit
have been set up as priority
indoor unit.
Stop of There is at least one stand-
corresponding unit alone indoor unit to which
group control cable is
connected.
Stop of Address setting has not
corresponding unit been performed for indoor
units.
Stop of Capacity setting has not
corresponding unit been performed for indoor
unit.
All stop Jumper wire provided on
P.C. board for servicing
I/F P.C. board has not been
removed as required for
given model.
The outdoor unit model is
duplicate. The Cool/Heat
Flex series 1/2 are duplicate.
Only the target The heating operation was
unit stopped performed without the
coolonly setting configured
in a cool-only room where a
cool / heat switch unit is not
connected.
– 54 –
Indoor unit (including Hot Water Module)
Check items (locations)
• Check installation of TD3
sensor.
• Check connection of TD3
sensor connector and
wiring.
• Check resistance
characteristics of TD3
sensor.
• Check for defect in outdoor
P.C. board (I/F).
• Check the model name of
the outdoor unit.
• Check the miswiring of the
communication line
between indoor and
outdoor.
• Check indoor addresses.
• Check for any change
made to remote controller
connection (group /
individual) since indoor
address setting.
• Check line addresses.
• 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 the outdoor unit
model.
• 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.