Carrier RAV-SP180UT-UL Service Manual page 82

[E18 error]
Is inter-unit wire
of A and B normal?
Is there no disconnection
or contact error of connector
on harness from terminal block
of indoor unit?
NO
Is group control operation?
Is power of all indoor units turned on?
Is there no contact error
of indoor/outdoor inter-unit wire
(Signal line) of the main unit?
[E08, L03, L07, L08 error]
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. (11. ADDRESS SETUP)
If the above error 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 error is detected during the automatic address set mode, a check code may be output.
[L09 error]
Is not yet capacity setting
of indoor unit set up?
NO
NO
YES
YES
NO
YES
NO
YES
YES
NO
YES
Correct connection of connector.
connection status of indoor unit
Correct indoor/outdoor inter-unit wire
Set capacity data of indoor unit.
– 82 –
Correct inter-unit wire
of remote controller.
Check circuit wiring.
Check power
(Connect again).
(Serial signal line).
Check indoor P.C. board.
Defect → Replace
(Setup CODE No. (DN)=11)
Check indoor P.C. board.
Defect → Replace