Service diagnosis
11
Domestic air conditioner
Code indication
fault description
Reference
Page
Indoor
displaying
panel code
indication
Outdoor
(LED1 flash
times)
Indoor and
Outdoor
E7
15
Communication fault between indoor and
outdoor units
Page46 .
Indoor Malfunction
E1
--
Room temperature sensor failure
Page36 .
E2
--
Heat-exchange sensor failure
Page36 .
.
5
4
e
g
a
P
r
o
r
r
e
M
O
R
P
E
E
r
o
o
d
n
I
-
-
4
E
E14
--
Indoor fan motor malfunction
Page37 .
Outdoor
Malfunction
.
5
4
e
g
a
P
r
o
r
r
e
M
O
R
P
E
E
r
o
o
d
t
u
O
1
2
1
F
F1
2
.
1
4
e
g
a
P
M
P
I
f
o
n
o
i
t
c
e
t
o
r
p
e
h
T
F22
3
Overcurrent
protection of AC electricity
for the outdoor model
Page50 .
F3
4
Communication fault between the IPM and
outdoor PCB
Page43.
F19
6
Power voltage is too high or low
Page48 .
F27
7
Compressor is lock-rotor or stopped
momentary
Page49
F4
8
Overheat protection for Discharge
temperature
Page44 .
0
4
e
g
a
P
t
l
u
a
f
r
o
t
o
m
n
a
f
C
D
r
o
o
d
t
u
O
9
8
F
F21
10
Defrost temperature sensor failure
Page36 .
F7
11
Suction temperature sensor failure
Page36 .
F6
12
Ambient temperature sensor failure
Page36 .
F25
13
Discharge temperature sensor failure
Page36
2
5
e
g
a
P
t
n
a
r
e
g
i
r
f
e
r
f
o
t
r
o
h
S
6
1
3
1
F
F11
18
deviate from the normal for the compressor
Page49 .
F28
19
Loop of the station detect error
Page49 .
/
21
Over load protection of indoor system
Page49 .
F2
24
Overcurrent of the compressor
Page50.
F23
25
Overcurrent protection for single-phase of the
compressor
Page50.
E9
21
High work-intense protection
Page52 .
311
