15
7
. Troubleshooting
7
)ODVKLQJ/('RI,QGRRU2XWGRRU8QLWDQG3ULPDU\-XGJPHQW
1. Requirement of malfunction display
When several malfunctions happen at the same time, malfunction codes will be displayed circularly.
2. Malfunction display method
(1)
Hardware
malfunction: it will be displayed immediately,
please refer to “Malfunction status sheet”;
(2)
Operation status: it will be
displayed immediately, please refer to “Malfunction status sheet”;
(3)
Other
malfunction:
It
will be
displayed
after
the
compressor has
been
stopped
for
200s,
please
refer
to
“Malfunction
status sheet”.
(Note:
W
hen the compressor starts up again, malfunction display
waiting time (200s) will
be cleared.)
3. Malfunction display control
Indoor unit displays malfunction code as shown in the sheet below. ODU communication light will be off for 1s and then blink
for 1s circularly.
4. Viewing malfunction code through remote controller
Enter viewing malfunction code: pressing light button for 6 times within 3S to view malfunction code;
Exit viewing malfunction code: pressing light button for 6 times within 3S or after the malfunction code is displayed for 5min.
Malfunction status sheet
e
b
u
t
e
i
x
i
N
e
p
y
t
n
o
i
t
c
n
u
f
l
a
M
e
m
a
n
n
o
i
t
c
n
u
f
l
a
M
8
U
n
o
i
t
c
n
u
f
l
a
m
e
r
a
w
d
r
a
H
n(for indoor unit)
o
i
t
c
n
u
f
l
a
m
t
i
u
c
r
i
c
n
o
i
t
c
e
t
e
d
s
s
o
r
c
o
r
e
Z
5
C
n
o
i
t
c
n
u
f
l
a
m
e
r
a
w
d
r
a
H
p(for indoor unit)
a
c
r
e
p
m
u
j
f
o
n
o
i
t
c
e
t
o
r
p
n
o
i
t
c
n
u
f
l
a
M
6
H
n
o
i
t
c
n
u
f
l
a
m
e
r
a
w
d
r
a
H
r(for indoor unit)
o
t
o
m
U
D
I
t
u
o
h
t
i
w
f
o
k
c
a
b
d
e
e
F
Indoor ambient temperature sensor is open/short circuited
Hardware malfunction
F1
Indoor evaporator temperature sensor is open/short circuited
Hardware malfunction
F2
Liquid valve temperature sensor is open/short circuited
Hardware malfunction
b5
Gas valve temperature sensor is open/short circuited
Hardware malfunction
b7
Modular temperature sensor is open/short circuited
Hardware malfunction
P7
Outdoor ambient temperature sensor is open/short circuited
Hardware malfunction
F3
Outdoor condenser middle pipe temperature sensor is
open/short circuited
Hardware malfunction
F4
Outdoor discharge temperature sensor is open/short
circuited
Hardware malfunction
F5
6
E
n
o
i
t
c
n
u
f
l
a
m
e
r
a
w
d
r
a
H
n
o
i
t
c
n
u
f
l
a
m
n
o
i
t
a
c
i
n
u
m
m
o
C
Malfunction of phase current detection circuit for compressor
Hardware malfunction
U1
Viewing malfunction code
through remote controller within
200s; displayed directly on
nixietube after 200s
8
P
n
o
i
t
c
e
t
o
r
p
e
r
u
t
a
r
e
p
m
e
t
h
g
i
h
e
l
u
d
o
M
Refrigerant lacking or blockage protection of system (not
available for residential ODU)
F0
U
P
n
o
i
t
c
n
u
f
l
a
m
e
r
a
w
d
r
a
H
r
o
t
i
c
a
p
a
c
f
o
n
o
i
t
c
n
u
f
l
a
m
g
n
i
g
r
a
h
C
1
E
n
o
i
t
c
n
u
f
l
a
m
e
r
a
w
d
r
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H
m
e
t
s
y
s
f
o
n
o
i
t
c
e
t
o
r
p
e
r
u
s
s
e
r
p
h
g
i
H
3
E
n
o
i
t
c
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f
l
a
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a
w
d
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)
d
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L
Содержание DHW18CMB21S
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