– 201 –
Do not set up outdoor addresses man
ually
.
[E25]
No
No
No
No
[E26]
Sub-code:
Address of the outdoor unit receiving signal abnor
mally
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
No
No
No
No
Sub-code
[E31]
01
02
03
04
05
06
07
08
0
9
12
A3-IPDU
3
0A
0B
0C
0D
0E
0F
80
12
A3-IPDU
O
O
O
O
O
O
O
O
O
3
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
[E28]
Sub-code:
Detected outdoor unit No
.
Chec
k code
Cause
Chec
k code name
Chec
k code
Cause
Chec
k code name
Chec
k code
Cause
Chec
k code name
Chec
k code
Cause
Chec
k code name
Duplicated f
ollo
w
er outdoor
address setup
Addresses are duplicated b
y man
ual setup of
outdoor address
F
ollo
w
er outdoor unit error
Error has occurred on a f
ollo
w
er outdoor unit.
Decrease of connected outdoor
units
1.
Outdoor unit bac
kup setup
2.
Outdoor po
w
er error
3.
Comm
unication line connection error betw
een
outdoor units
4.
Comm
unication connector connection error
5.
Outdoor I/F P
.C
. board error
IPDU comm
unication error
1.
Connection error of comm
unication line betw
een
IPDU and I/F P
.C
. board
2.
I/F P
.C
. board error
3.
IPDU P
.C
. board error
4.
Exter
nal noise
Dur
ing setup of outdoor
unit bac
kup?
Is
comm
unication
connector betw
een IPDU
and I/F P
.C
. board
connected?
Is there
no disconnection on comm
unication line
betw
een IPDU and I/F P
.C
. board?
Is there
voltage deflection
betw
een 4 and 5 pin of
CN600 on I/F P
.C
. board?
(Measurement with tester
:
DC 0 to 5V
,
5 pins GND)
Is there
voltage deflection
betw
een 3 and 5 pin of
CN600 on I/F P
.C
. board?
(Measurement with tester
:
DC0 to 5V
,
5 pins GND)
Is main po
w
er of
follo
w
er unit tur
ned on?
Is
comm
unication line
betw
een outdoor
units connected
nor
mally?
Is comm
unication
connector (CN03)
betw
een f
ollo
w
er outdoor
units connected?
Clear the error
, and then star
t
oper
ation.
(*1)
Correct connection of connector
.r.
Replace comm
unication line
.
I/F P
.C
. board error
I/F P
.C
. board error
Sub-code:
80
Replace def
ectiv
e IPDU
P
.C
. board.
Tur
n on the main po
w
er supply
.
Correct connection of
comm
unication line
.
Correct connector connection.
(Comm
unication connector
: CN03)
(*1) Ho
w to clear the error
Set SW01/SW02/SW03 on I/F P
.C
. board of header unit to 2/16/1, and
push SW04 f
or 5 seconds or more
.
(7-segment displa
y:
[Er
.] [CL])
Chec
k I/F P
.C
. board.
An error occurred on a f
ollo
w
er unit.
See the chec
k code on the 7-segment displa
y on I/F P
.C
. board of the f
ollo
w
er
unit, and then chec
k it according to diagnose procedure f
or the chec
k code
.
(Ho
w to specify the f
ollo
w
er outdoor unit in which error occurred)
Push SW04 f
or 1 second or more under condition that [E28] is displa
y
ed on the 7-segment displa
y of the header
unit.
The f
an of the outdoor unit which stopped due to occurrence of error star
ts rotating.
Push SW05 to stop the f
an.
F
an
IPDU
F
an
IPDU
Sub
MCU
O
:
P
ar
t where IPDU error has occurred.
In the case that All IPDUs (A3- IPDUs and
fan IPDUs) do not retur
n response
.
*
T
w
o A3-IPDUs (NO
. 1 and 2) e
xist in 8,
10 HP models
. In 12 or 14 HP models
,
three A3-IPDUs (No
. 1, 2, 3) e
xist.
No
W
as po
w
er
supply correctly reset?
(P
o
w
er supply OFF f
or
60 seconds or more)
Reset po
w
er supply and reactiv
ate
.
I/F board error
→
Replace
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