7
7
.
.
T
T
R
R
O
O
U
U
B
B
L
L
E
E
S
S
H
H
O
O
O
O
T
T
I
I
N
N
G
G
DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3
115
Fault
code
Fault Description
Possible Reason of Abnormality
How to Deal With
2、
Driver board failure；
3、PFC failure；
board;
3、Change the PFC.
13
DC voltage detected abnormal .
1、
Input voltage is too high or
too low;
2,Driver board failure；
1,Check the power supply.
2,Change the driver board;
14
PFC LOW voltage detected failure.
15
AD offset abnormal detected failure.
Driver board failure.
Change the driver board.
16
Inverter PWM logic set fault.
17
Inverter PWM initialization failure
18
PFC_PWM logic set fault.
19
PFC_PWM initialization fault.
20
Temperature abnormal.
21
Shunt resistance unbalance
adjustment fault
22
Communication failure.
1、
Communication wire
connect not well.
2、
Driver board failure.
3、
Control board failure.
1、
Check the wiring.
2、
Change the driver
board.
3、
Change the control
board.
23
Motor parameters setting of failure
Initialization abnormal.
Reset the power supply.
