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
Page48
Indoor Malfunction
E1
--
Room temperature sensor failure
Page38
E2
--
Heat-exchange sensor failure
Page38
7
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
Page39
Outdoor
Malfunction
7
4
e
g
a
P
r
o
rr
e
M
O
R
P
E
E
r
o
o
d
t
u
O
1
2
1
F
F1
2
3
4
e
g
a
P
M
P
I
f
o
n
o
it
c
e
t
o
r
p
e
h
T
F22
3
Overcurrent protection of AC electricity
for the outdoor model
Page52
F3
4
Communication fault between the IPM and
outdoor PCB
Page45
F19
6
Power voltage is too high or low
Page50
F27
7
Compressor is lock-rotor or stopped
momentary
Page51
F4
8
Overheat protection for Discharge
temperature
Page46
2
4
e
g
a
P
tl
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
Page38
F7
11
Suction temperature sensor failure
Page38
F6
12
Ambient temperature sensor failure
Page38
F25
13
Discharge temperature sensor failure
Page38
4
5
e
g
a
P
t
n
a
r
e
g
ir
f
e
r
f
o
tr
o
h
S
6
1
3
1
F
F11
18
deviate from the normal for the compressor
Page51
F28
19
Loop of the station detect error
Page51
/
21
Over load protection of indoor system
Page53
F2
24
Overcurrent of the compressor
Page52
F23
25
Overcurrent protection for single-phase of the
compressor
Page52
E9
21
High work-intense protection
Page54
37
