134
Is wire connection to
communication line
normal?
Check code
Check code name
Duplicated indoor addresses
Cause
Indoor addresses are duplicated.
Sub-code: Duplicated indoor address
Using a wired remote control (RBC-AMT32E), check the setup CODE No. (DN
code) 12, 13, and 14.
When there is no address duplication, check to the following flowchart.
Is not communication
line connected to the
different outdoor
unit?
Is indoor unit quantity
connected to outdoor
unit correct?
Set up indoor address again.
Correct wire connection.
Correct communication line.
Is setup of end terminal
resistance of outdoor
unit normal?
Correct communication line.
Check code
Check code name
Cause
Indoor/Outdoor communication
circuit error
(Detected at outdoor side)
1. Indoor/outdoor communication end terminal resistance
setup error
2. Indoor/outdoor communication connection error
Is inter-unit wire
(U1, U2) between indoor
and outdoor short-
circuited?
Is connection of
inter-unit wire between
indoor and outdoor
correct?
Is there no error on
power wire to outdoor
unit?
Is there noise source?
Outdoor I/F P.C. board failure
➝ Replace
Correct
short-circuit.
Is F01 or F02 (fuse) on
I/F P.C. board opened?
I/F P.C. board failure
However an emergent operation is
available by inserting connector to be
connected to CN01 to CN33.
* Check conduction with tester.
Correct setup of end terminal
resistance.
Correct power wire.
Turn on power to start operation.
Eliminate noise.
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