197
No
Y
es
[E09] / [99]
(AI-NET)
Y
es
Y
es
No
No
Y
es
No
No
No
Y
es
No
Y
es
Y
es
[E15] / [42]
(AI-NET)
No
Y
es
[E10] / [CF]
(AI-NET)
[E12] / [42]
(AI-NET)
Sub-code: 01: Communication between indoor and outdoor 02: Communication between outdoor units
Y
es
No
Check code
Cause
Check code name
Check code
Cause
Check code name
Check code
Cause
Check code name
Check code
Cause
Check code name
Duplicated header remote
controller
No corresponding indoor unit
during automatic address
Setup of header remote controller is duplicated.
Communication error between
indoor MCUs.
Automatic address start error
Indoor P
.C. board error
.
Are two remote
controllers set up as two
header remote
controllers?
Is communication
line between indoor
and outdoor
normal?
Is connection of
CN40 connector on
indoor P
.C. board
correct?
Is
connection of CN01
connector on I/F P
.C. board
of header outdoor unit
correct?
Is there any connection
error of power wire?
Did a power failure
occur?
Is there no noise source?
Set up address again after
resetting power supply
.
Is there any trouble on
power line?
Are U1, U2, U3, and
U4 connectors
connected?
Set up one controller as the header and
the other follower
.
(Remote controller address connector)
Correct communication line.
Correct connection of
connector
.
Correct connection of
connector
.
Correct power wire.
Set up address again after
resetting power supply
.
Eliminate noise.
Check remote controller P
.C. board.
Failure
➝
Replace
Check power voltage. Improve the
line condition. Eliminate noise, etc.
Check indoor control P
.C. board.
Failure
➝
Replace
Disconnect connector connection
of U1, U2, U3, and U4.
T
urn on power of outdoor unit
again.
1.
Starting automatic addressing of indoor units during
automatic addressing in another refrigerant line.
(Sub-code: 01)
2.
Starting automatic addressing of outdoor units
during automatic addressing of indoor units
(Sub-code: 02)
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
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)