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6
.
T
R
O
U
B
L
E
S
H
6
.
T
R
O
U
B
L
E
S
5
IPM module protection
6
Over and under-voltage control
7
Communication trouble
8
Current overload control
9
Maximum current control
10
4-way valve changeover
abnormal
11
Outdoor EEPROM in trouble
13
Compressor exhaust
temperature too high control
14
Outdoor ambient temperature
sensor in trouble
15
Compressor housing
temperature control
O
O
T
I
N
G
H
O
O
T
I
N
G
33
Room temperature sensor in
trouble
34
Indoor coil temperature sensor in
trouble
36
Communication between the
indoor and outdoor in trouble
39
Indoor fan motor operation
abnormal
40
Grid protection alarm (cabinet
type)
41
Detecting failures by
zero-crossing
20
A
S
-
1
8
U
R
4
S
T
V
U
A
S
-
1
8
U
R
4
S
T
V
U
H
1
H
1
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