53
Domestic air conditioner
HSU-09/12RS03/R2(SDB)
Service Diagnosis
7.4.Error Codes and Description indoor display
Code indication
Description
Reference
Page
indoor
Outdoor
(LED1 flash
times)
Indoorand Outdoor
E7
15
Communication fault between indoor and
outdoor units
61
Indoor Malfunction
E1
Room temperature sensor failure
54
E2
Heat-exchange sensor failure
54
0
6
r
o
r
r
e
M
O
R
P
E
E
r
o
o
d
n
I
4
E
5
5
n
o
i
t
c
n
u
f
l
a
m
r
o
t
o
m
n
a
f
r
o
o
d
n
I
4
1
E
Outdoor
Malfunction
0
6
r
o
r
r
e
M
O
R
P
E
E
r
o
o
d
t
u
O
1
2
1
F
F1
2
6
5
M
P
I
f
o
n
o
i
t
c
e
t
o
r
p
e
h
T
F3
4
Communication fault between the IPM and
outdoor PCB
56
F19
6
Power voltage is too high or low
63
F4
8
Overheat protection for exhaust temperature
58
F21
10
Frost-removing temperature sensor failure
57
F6
12
Ambient temperature sensor failure
57
F25
13
Exhaust temperature sensor failure
57
F11
18
deviate from the normal for the compressor
64
