No
Ye
s
Ye
s
No
Ye
s
No
Ye
s
No
Ye
s
No
Ye
s
No
No
Ye
s
[E04]
No
Ye
s
No
Ye
s
Ye
s
No
Ye
s
No
No
Ye
s
No
Ye
s
[E06]
Sub-code: No. of indoor units which received signals normally
e
s
u
a
C
e
d
o
c
k
c
e
h
C
Check code name
e
s
u
a
C
e
d
o
c
k
c
e
h
C
Check code name
Decreased number of indoor units
Indoor/Outdoor communication
circuit
trouble
(Detected at indoor side)
1.
Communication lines (U1, U2) connection
trouble
between indoor and outdoor
2.
Communication connector's connection
trouble
on indoor unit,
trouble
on P
.C. board
3.
Communication connector's connection
trouble
on outdoor unit,
trouble
on I/F board
4.
Power supply of indoor unit (Is power turned on?)
1.
Power of outdoor unit was firstly turned on.
2.
Connection
trouble
of communication line between
indoor and outdoor
3.
Terminator resistor
setup
trouble
on
communication between indoor and outdoor
4.
Address
setup
trouble
Is there no
miswiring/disconnection
on communication line
between indoor and
outdoor?
W
as power turned on
in order of indoor unit
outdoor unit?
Is connection
(U1/U2 terminals) of
indoor/outdoor inter-unit
wire normal?
Is connector
connection from U1/U2
terminals of indoor/outdoor
inter-unit wire
normal?
Is the
terminator resistor
setup of outdoor unit
normal?
Is power applied to fuse
(F03) on indoor P
.C.
board?
Is address setup correct?
Is there no noise, etc?
Is connection
of CN40 connector on
indoor P
.C. board
normal?
Is connection of CN01
connector on outdoor I/F
P
.C. board normal?
Is power of indoor unit
turned on?
Did a power failure
occur?
Is there no noise, etc?
Correct communication line.
T
urn on power again in order
of indoor unit
outdoor unit.
Correct inter-unit wire.
Correct connector connection.
Correct the
terminator resistor
setup.
Set up address again.
Check noise, etc, and
eliminate it if any
.
Check connection of inter-unit
wire between indoor and outdoor
is correct, and then connect
communication line connector on
indoor P
.C. board (CN40) to
CN44 (EMG).
Correct wiring or connector
.
T
urn on power of indoor unit.
Clear the check code.
Check noise, etc, and eliminate
it if any
.
Check indoor P
.C. board.
Failure
Replace
Check indoor P
.C. board.
Failure
Replace
(NOTE)
1.
When signal is not sent for a certain period from the indoor unit which has
used to send signals normally
, [E06] is displayed.
For d
e
ta
ils,
r
e
fe
r
to “7
-5
. Trou
blesh
oo
ting
in Te
st Op
erat
io
n”.
- 155 -