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Check code
[E08] / [96]
(TCC-L / AI-NET)
Check code name
Duplicated indoor addresses
Cause of operation
Indoor addresses are duplicated.
Sub-code: Duplicated indoor address
Using a main remote controller (RBC-AMT21E), check the setup item codes (DN code) 12, 13, and 14.
When there is no address duplication, check to the following flowchart.
YES
YES
YES
NO
NO
NO
Is cable connection to
communication line normal?
Is communication line connected
to the different outdoor unit?
Is indoor unit quantity connected
to outdoor unit correct?
Set up indoor address again.
Correct communication line.
Correct cable connection.
Check code
[E09] / [99]
(TCC-L / AI-NET)
Check code name
Duplicated master
remote controller
Cause of operation
Setup of master remote controller is dupli-
cated.
Check code
[E10] / [CF]
(TCC-L / AI-NET)
Check code name
Communication error
in indoor P.C. board assembly
Cause of operation
Indoor P.C. board error failure
Is there any fault on power line?
YES
NO
Check indoor control P.C. board.
Failure Replace
Check power voltage on line.
Eliminate noise, etc.
YES
NO
Are two remote controllers set up
as two master remote controllers?
Correct setup of remote controllers one as a master, and
the other as sub (remote controller address connector).
Check remote controller P.C. board.
Failure Replace
YES
NO
Are U1, U2, U3, and U4
connectors connected?
Disconnect relay connector
of U1, U2, U3, and U4.
Set up address again.
(Refer to “Address setup procedure”.)
Turn on power of
outdoor unit again.
Check code
[E12] / [42]
(TCC-L / AI-NET)
Check code name
Automatic address start error
Cause of operation
1. When indoor automatic address started,
other refrigerant circuit system was setting
automatic address. (Sub code : 01)
2. When outdoor automatic address started,
the indoor automatic address was being
set. (Sub-code: 02)
Sub-code: 01: Communication between indoor and outdoor 02: Communication between outdoor units
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
Did a power failure occur?
Is there a noise source?
Is connection of CN01
connector on I/F P.C. board of
header outdoor unit correct?
Is communication line between
indoor and outdoor normal?
Is connection of CN40 connector
on indoor P.C. board correct?
Is there any connection
error of power cable?
Set up address again
after resetting power supply.
Set up address again after
resetting power supply.
Correct communication line.
Correct connection.
Correct connection.
Correct power cable.
Eliminate noise.
Check code
[E15] / [42]
(TCC-L / AI-NET)
Check code name
No corresponding indoor unit
during automatic address
Cause of operation
1. Communication line connection error
between indoor and outdoor.
2. Indoor power system error
3. Noise from surrounding devices
4. Power failure
5. Indoor P.C. board error