Has the capacity setting
of indoor unit been set up?
Is group control operation?
Is power of all indoor units turned on?
Is Twin control?
Is inter-unit cable
of A and B normal?
Is indoor/outdoor inter-unit cable
(Signal line) of the header indoor unit
connected correctly?
Is the connector on the harness or the
harness from terminal block of indoor unit
connected correctly?
Set capacity data of indoor unit.
(Setup CODE No. (DN) [11])
Replace indoor P.C. board (MCC-1
696
).
NO
YES
Replace indoor P.C. board
(MCC-16
96
).
Correct indoor/outdoor inter-unit cable
(Serial signal line).
Check power
connection status of indoor unit
(Connect again).
Correct connection of connector.
Check circuit wiring.
Correct inter-unit cable
of remote controller.
NO
YES
YES
YES
NO
YES
YES
NO
NO
NO
YES
NO
[E18 trouble]
[E08, L03, L07, L08 trouble]
E08: Duplicated indoor unit No.
L03: There are 2 or more header units in a group control.
L07: There is 1 or more group address [Individual] in a group control.
L08: The indoor group address is unset. (CODE NO. (DN) [14] = 00Un or 0099)
If the above trouble is detected when power supply turned on, the mode enters automatically in the
automatic address set mode. (Check code is not output.)
However, if the above trouble is detected during the automatic address set mode, a check code may be
output.
[L09 trouble]
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