Toshiba MMD-AP0071SH-C Service Manual page 97

Check code name Check code name
[L07] / [99] Group line in individual indoor unit
(d07 / AI-NET)
YES
Check setup item code
Is there group cabling?
DN 12, 13, and 14 addresses.
NO
There is individual indoor unit.
®
Check indoor P.C. board.
Failure Replace
Check code name Check code name
[L08] / [99]* Indoor group / address unset
(d07 / AI-NET)
NO
Are powers of all the
indoor units turned on?
YES
Disconnect connectors between
[U1, U2] and [U3, U4].
Clear addresses.
(Refer to "Address clear".)
Re-execute address setup.
(Refer to "Address setup".)
Note) This code is displayed when the power is turned on at the first time after installation.
(Because the address is not yet set up)
Check code name Check code name
[L09] / [46] Indoor capacity unset
(d07 / AI-NET)
YES
Are capacity setups
of indoor units unset?
NO
Cause of operation
The group line is connected in the
individual indoor unit.
Item code (D1) 12: Line address
Item code (D2) 13: Indoor address
Item code (D3) 14: Group address
YES
Correct indoor group address.
NO
Cause of operation
Indoor address unset
Turn on the power of indoor units.
Turn on the power of outdoor unit again.
Cause of operation
Indoor capacity unset
Set up capacity data of indoor unit.
(Setup item code (DN) = 11)
Check indoor P.C. board.
Defect Replace
Check code name Check code name
[L10] / [88] Outdoor capacity unset
(d07 / AI-NET)
I/F P.C. board A'ssy service for the outdoor unit is common to this series. A setup for model selection different from
that for P .C. board with trouble is necessary. Set up a model based upon the P.C. board A'ssy exchange procedure.
Check code name Check code name
[L17] / [46] Inconsistent models of
outdoor units
(d07 / AI-NET)
Are the connected outdoor NO
units those for flex on 1 system?
(Check model name.)
YES
Is the check code [L17]
NO
displayed even if turning on again
power of all the connected outdoor
units on 1 system alone?
YES
Are all the connected
NO
outdoor I/F P.C. boards on 1 system
P.C. boards of outdoor units for
Super Module Multi Flex?
YES
Check again whether there is any
∗ Using 7-segment on I/F P.C. board, check the model name for each outdoor unit.
other outdoor unit or not on the
communication line in 1 system. For check, when putting the rotary switch on SW01/02/03=16/16/16, it is an
If any, turn off power of the outdoor I/F P.C. board for Super Module Multi Flex if "F" is displayed at the left
corresponding outdoor unit and side of 7-segment [A] part.
then check once more.
Cause of operation
On the outdoor IF P .C. board for service, the
model selecting jumper has not been set up so
as to match with the model.
Cause of operation
There are outdoor units on the communication
line other than Super Module Multi Flex type
such as Super Module Multi or Super Module
Multi ice regenerative type
Replace outdoor units of other models
with outdoor units purposed for flex.
Correct communication line between
outdoor units.
Change the incorrectly built-in outdoor
I/F P.C. boards with I/F boards for
Super Module Multi Flex.