Toshiba MiNi-SMMS MCY-MAP0501HT Service Manual page 135

Check code Check code name
[L10] / [88] Outdoor capacity unset
(TCC-L / AI-NET)
Service I/F P.C. board for the outdoor unit is common to all outdoor units.
The service I/F P.C. board will need to be set up for the correct model based upon the faulty I/F P.C. board, which it is
replacing. Set up the model based upon the I/F P.C. board assembly change procedure.
Check code Check code name
[L17] / [46] Inconsistent models of
outdoor units
(TCC-L / 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 power on
again of all the connected outdoor
units on 1 system alone?
YES
Are all the connected
NO
outdoor I/F P.C. board's on 1 system
P.C. board's 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 on 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
The model selection jumper of the outdoor I/F
P.C. board does not match 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 specified models
Correct communication line between
outdoor units.
Change the incorrectly built-in outdoor
I/F P.C. board's with I/F P.C. board's for
Super Module Multi Flex.
Check code Check code name
[L20] / [98] Duplicated central
control addresses
(TCC-L / AI-NET)
Are two or more YES
central control system with identical
network addresses connected?
NO
Check code Check code name
[L29] / [CF] IPDU quantity error
(TCC-L / AI-NET)
Auxiliary code :
01: Comp IPDU error 02: Fan 1 IPDU error
03: Comp + Fan 1 IPDU error 04: Fan 2 IPDU error
05: Comp + Fan 2 IPDU error 06: Fan 1 + Fan 2 IPDU error
07: All IPDU error or disconnection of communication line between IPDU-I/F P .C. board or outdoor I/F P .C. board error
Are communication connectors between
I/F P.C. board and comp IPDU connected?
( I/F P.C. board : CN600 )
Comp IPDU : CN06
YES
Are communication connectors
between comp IPDU and fan IPDU connected?
( Comp IPDU : CN22 )
Fan IPDU : CN804
YES
Has the power supply connectors
connected comp IPDU and fan IPDU?
Comp IPDU : CN13
( )
Fan IPDU : CN01
Check the voltage, AC 220–240V
YES
Has the power supply connectors
connected fan IPDU and noise filter P.C. board?
Fan IPDU : CN02
( )
Noise filter P.C. board : CN08
Check the voltage, AC 220–240V
YES
Replace P.C. board according to auxiliary code.
Cause of operation
Central control addresses are duplicated.
Correct the network address
of the central control system.
Check the network adaptor
on the indoor P.C. board.
Cause of operation
1. Incorrect model setup in service for I/F P.C. board
2. Communication error between IPDU, fan IPDU and I/F
3. IPDU, fan IPDU, I/F P.C. board error
NO
Correct connection of communication line.
NO
Correct connection of communication line.
NO
Correct connection of power supply line.
NO
Correct connection of power supply line.