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
Page49.
Indoor Malfunction
E1
--
Room temperature sensor failure
Page39.
E2
--
Heat-exchange sensor failure
Page39.
0.
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
Page41.
Outdoor
Malfunction
0.
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
4.
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
Page45.
F3
4
Communication fault between the IPM and
outdoor PCB
Page46.
F19
6
Power voltage is too high or low
Page47.
F27
7
Compressor is lock-rotor or stopped
momentary
Page51.
F4
8
Overheat protection for Discharge
temperature
Page48.
2.
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
Page39 .
F7
11
Suction temperature sensor failure
Page39.
F6
12
Ambient temperature sensor failure
Page39.
F25
13
Discharge temperature sensor failure
Page39.
e44.
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
Page51.
F28
19
Loop
of
the station detect error
Page51.
F2
24
Overcurrent of the compressor
Page45.
F23
25
Overcurrent protection for single-phase of the
compressor
Page45.
E9
21
High work-intense protection
Page52.
/
21
Over load protection of indoor system
Page47 .
259
