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Check method
On the wired remote controller, central control remote controller and the interface P.C. board of the outdoor unit (I/F), a check display LCD (Remote controller) or 7-segment display (on the outdoor interface P.C. board) to display the operation
is provided. Therefore the operation status can be known. Using this self-diagnosis function, a trouble or position with error of the air conditioner can be found as shown in the following table.
Check code list
The following list shows each check code. Find the check contents from the list according to part to be checked.
In case of check from indoor remote controller: See "Wired remote controller display" in the list.
In case of check from outdoor unit: See "Outdoor unit 7-segment display" in the list.
In case of check from indoor unit with a wireless remote controller: See "Sensor block display of receiving unit" in the list.
Wired remote
controller display
E
0
1
—
E
0
2
—
E
0
3
—
E
0
4
—
E06
E06
No. of indoor units in which sensor has been normally received
—
E
0
7
E
0
8
E
0
8
D
u
p
c i l
a
e t
d
E
0
9
—
E
1
0
—
01:Indoor/Outdoor units communication
E12
E12
02:Outdoor/Outdoor units communication
E
1
5
E
1
5
00:Capacity over
E16
E16
01 ~:No. of connected units
E
1
8
—
00:No header
E19
E19
02:Two or more header units
01:Outdoor unit of other line connected
E20
E20
02:Indoor unit of other line connected
02:No header unit
E21
E21
00:Multiple number of header units
E
2
2
E
2
2
E
2
3
E
2
3
E
2
5
E
2
5
E26
E26
No. of outdoor units which received signal normally
E
2
8
E
2
8
D
e
e t
c
e t
d
E
3
1
E
3
1
N
u
m
b
r e
f o
39-EN
C
h
e
c
k
c
o
d
e
Outdoor unit 7-segment display
A
u
x
l i
a i
y r
c
o
d
e
—
—
—
—
—
n i
d
o
r o
u
n
t i
a
d
d
e r
s s
e
s
—
—
—
—
—
—
—
o
u
d t
o
r o
u
n
t i
n
u
m
b
r e
P I
D
U
* (
) 1
W
i
e r
e l
s
s
e r
m
o
e t
c
o
t n
o r
l l
r e
Sensor block display of receiving unit
O
p
r e
t a
o i
n
i T
m
r e
R
e
a
d
y
F
a l
s
h
– 20 –
ALT: Flashing is alternately when there are two flashing LED.
SIM: Simultaneous flashing when there are two flashing LED.
C
h
e
c
k
c
o
d
e
n
a
m
e
Communication error between indoor unit and remote controller (Detected at
remote controller side)
R
e
m
o
e t
c
o
t n
o r
e l l
t r
a r
n
s
m
i
s s
o i
n
e
r r
r o
Communication error between indoor unit and remote controller (Detected at
indoor unit side)
Communication circuit error between indoor/outdoor unit (Detected at indoor
unit side)
D
e
c
e r
a
s
e
f o
N
. o
f o
n i
d
o
r o
u
n
s t i
Communication circuit error between indoor / outdoor unit (Detected at
outdoor unit side)
D
u
p
c i l
a
e t
d
n i
d
o
r o
u
n
t i
a
d
d
e r
s s
e
s
D
u
p
c i l
a
e t
d
m
a
t s
r e
e r
m
o
e t
c
o
t n
o r
e l l
s r
C
o
m
m
u
n
c i
t a
o i
n
e
r r
r o
b
e
w t
e
e
n
n i
d
o
r o
u
n
t i
M
C
A
u
o t
m
a
c i t
a
d
d
e r
s s
s
a t
t r
e
r r
r o
N
o
n i
d
o
r o
u
n
t i
d
r u
n i
g
a
u
o t
m
a
c i t
a
d
d
e r
s s
n i
g
C
a
p
a
c
y t i
o
v
e
/ r
N
. o
f o
c
o
n
n
e
c
e t
d
n i
d
o
r o
u
n
s t i
C
o
m
m
u
n
c i
t a
o i
n
e
r r
r o
b
e
w t
e
e
n
h
e
a
d
r e
and follower units Indoor unit
O
u
d t
o
r o
h
e
a
d
r e
u
n
s t i
q
u
a
t n
y t i
e
r r
r o
O
h t
r e
n i l
e
c
o
n
n
e
c
e t
d
d
r u
n i
g
a
u
o t
m
a
c i t
a
d
d
e r
s s
E
r r
r o
n i
n
u
m
b
r e
f o
h
e
t a
s
o t
a r
g
e
m
a
t s
r e
u
n
s t i
R
e
d
u
c
o i t
n
n i
n
u
m
b
r e
f o
h
e
t a
s
o t
a r
g
e
u
n
s t i
Sending error in communication between outdoor units
Error in number of heat storage units (trouble with reception)
D
u
p
c i l
a
e t
d
o f
o l l
w
r e
o
u
d t
o
r o
a
d
d
e r
s s
e
s
D
e
c
e r
a
s
e
f o
N
. o
f o
c
o
n
n
e
c
e t
d
o
u
d t
o
r o
u
n
s t i
F
o
o l l
w
r e
o
u
d t
o
r o
u
n
t i
e
r r
r o
P I
D
U
c
o
m
m
u
n
c i
t a
o i
n
e
r r
r o
: Lighting,
: Flashing,
: Goes off
IPDU: Intelligent Power Drive Unit
J
u
d
g
n i
g
d
e
v
c i
e
Remote controller
R
e
m
o
e t
c
o
n
r t
l l o
r e
Indoor unit
Indoor unit
I
F /
I/F
n I
d
o
r o
u
n
t i
I
F /
R
e
m
o
e t
c
o
n
r t
l l o
r e
n I
d
o
r o
u
n
t i
I
F /
I
F /
I
F /
Indoor unit
I
F /
I
F /
I
F /
I
F /
I/F
I
F /
I
F /
I
F /
I
F /
40-EN
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