Toshiba MiNi-SMMS MCY-MAP0501HT Service Manual page 134

Check code Check code name
[L04] / [96] Duplicated setup of outdoor line address
(TCC-L / AI-NET)
YES
Are there duplicate line address setups?
NO
NO
Are communication wire connections of
[U1.U2], [U3.U4], and [U5, U6] normal?
YES
®
Check outdoor I/F P.C. board.
Failure Replace
Check code Check code name
[L05] / [96] Duplicated indoor units with priority
(Displayed on indoor unit with priority)
(TCC-L / AI-NET)
This check code is displayed on the set indoor unit when setup of indoor unit with priority is duplicated.
• Priority setup with two or more units is not available. Choose one prior unit in one refrigerant circuit system.
Check code Check code name
[L06] / [96] Duplicated indoor units with priority
(Displayed on the indoor unit other than
(TCC-L / AI-NET)
one with priority and on the outdoor unit)
Auxiliary code: No. of indoor units with priority
When indoor unit with priority is duplicated, this fault code is displayed on the unit other than the setup indoor unit
and outdoor unit.
• As only one indoor unit with priority is valid, change the setup.
Cause of operation
Outdoor line addresses are duplicated.
Correct the line address setup.
Correct the wire connection.
Repeat the address setup.
(Refer to "Address setup".)
Cause of operation
1. Two or more prior indoor units exist.
Cause of operation
Two or more indoor units with priority
are duplicated.
Check code Check code name
[L07] / [99] Group line in individual indoor unit
(TCC-L / AI-NET)
YES
Check setup item code
Is there group wiring?
DN 12, 13, and 14 addresses.
NO
Is there an individual indoor unit.
®
Check indoor P.C. board.
Failure Replace
Check code Check code name
[L08] / [99]* Indoor group / address unset
(TCC-L / AI-NET)
NO
Is the power on 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 Check code name
[L09] / [46] Indoor capacity unset
(TCC-L / 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