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8-5. Troubleshooting in test operation
If there are phenomena such as the output of a check code or the remote controller is not accepted when powered-
on after wiring work or during address setup operation, the following causes are considered.
8-5-1. A check code is displayed on the remote controller
* “L05”: Displayed on the indoor unit set up with priority
“L06”: Displayed on the indoor units except the one set up with priority
Check the code
displayed on the
indoor remote
controller
Outdoor
unit 7-
segment
display
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u
s
a
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e
t
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u
o
C
e
s
u
a
C
E04
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o
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r
e
w
o
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t
i
n
u
r
o
o
d
t
u
o
e
h
t
t
a
h
t
k
c
e
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C
ff
o
s
i
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w
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p
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h
W
–
L08
Address setup error
Only line addresses of the connected indoor units
are undefined.
The outdoor line address and the line addresses
of all the indoor units do not match.
The indoor addresses are duplicated. (Units
except those displaying E04 are duplicated.)
Set up the address again.
E08
-XX
Alternate
blinking
Duplication of indoor addresses (address number in
the sub code of the check code are duplicated).
Set up the address again.
E07
Indoor / Outdoor communication circuit trouble.
(Detected by outdoor side)
Check SW30 bit 2 of the outdoor unit.
No connection between multiple refrigerant lines:
SW30 bit 2 is on.
Check the communication connector between
indoor and outdoor unit.
Transmission circuit trouble at the interface side
(P.C.board failure)
Replace the interface P.C. board.
E06
After address setup, communication from all the
indoor units is interrupted under the condition that a
normal operation can be performed.
Check and correct disconnection of the indoor /
outdoor communication line.
Check for the influence of communication noise.
E16
E16
-XX
Alternate
blinking
Exceeded the number or capacity of connected
indoor units
Adjust the number or capacity of connected indoor
units.
L04
L04
Duplication of outdoor line addresses
Line address setup error (occurred after
connection between U1 / U2 and U3 / U4
connectors)
Modify the line address setup of the outdoor unit
between lines. (Set up SW13 and SW14 on the
interface P.C. board.)
L05(*)
L06
Duplication of indoor units with priority
Set up priority only for one indoor unit.
L06(*)
There are two or more indoor units set up with
priority.
Among indoor units indicating “L05,” set one unit
with priority.
L08
L08
Address setup error
Only indoor addresses of all the connected indoor
units are undefined.
Set up the addresses again.
Modify the setup.
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2016/04/08 17:20:58
