2.TROUBLESHOOTING
Table 3 Drive fault code (3.0/3.5HP)
Fault
code
Fault description
Possible reasons for abnormality
How to deal with
1 Inverter DC voltage overload fault
1. Power supply input is too high
or too low;
2. Driver board fault.
1. Check power supply;
2. Change driver board.
2 Inverter DC low voltage fault
3 Inverter AC current overload fault
4 Out-of-step detection
1. Compressor phase lost;
2. Bad driver board components;
3.
The compressor insulation fault.
1. Check compressor wire
connection;
2. Change driver board;
3. Change compressor.
5
Loss phase detection fault (speed
pulsation)
6
Loss phase detection fault (current
imbalance)
7 Inverter IPM fault (edge)
1. System overload or current
overload;
2. Driver board fault;
3. Compressor oil shortage,
serious wear of crankshaft;
4. The compressor insulation fault.
1. Check the system;
2. Change driver board;
3. Change the compressor;
4. Change the compressor.
8 Inverter IPM fault (level)
9 PFC_IPM IPM fault (edge)
10 PFC_IPM IPM fault (level)
11 PFC power detection of failure
1. The power supply is not stable;
2. Instantaneous power cut;
3. Driver board failure.
1. Check the power supply;
2. No need to deal with;
3. Change the driver board.
12
PFC overload current detection of
failure
1. System overload, current is
too high;
2. Driver board fails;
3. PFC fails.
1.Check the system;
2.Change the driver board;
3.Change the PFC.
13 DC voltage detected abnormal
1. Input voltage is too high
or too
low;
2. Driver board fails.
1. Check the power supply;
2. Change the driver board.
14
PFC LOW voltage detected
failure
15
AD offset abnormal detected
failure
Driver board fails.
Change the driver board.
16 Inverter PWM lo
gic set fault
17 Inverter PWM initialization failure
18 PFC_PWM logic set fault
19 PFC_PWM initialization fault
20 Temperature is abnormal
21
Shunt resistance unbalance
adjustment fault
22
Communication failure
1. Communication wire connection
is not proper;
2. Driver board fails;
3. Control board fails.
1. Check the wiring;
2. Change the driver board;
3. Change the control board.
23 Motor parameters setting of failure Initialization is abnormal.
Reset the power supply.
25
EE data is abnor
mal
Driver board EEPROM is abnormal.
1. Change EEPROM;
2. Change driver board.
26 DC voltage mutation error
1. Power input changes suddenly;
2. Driver board fails.
1.Check power supply, to provide
stable power s
upply;
2.
Change the driv
er board.
27 D axis current control error
1. System overload, phase current
is too high;
2. Driver board fails.
1. Check if the system is normal;
2. Check if the stop valve is open;
3. Change the driver board.
28
Q axis current control error
1.
System overload, phase current
is too high;
2. Driver board fails.
1. Check if the system is normal;
2. Check if the stop valve is open;
3. Change the driver board.
29
Satur
ation error of
D
axis current
control integral
1. System overload suddenly;
2. Compressor parameter is
not suitable;
3. Driver board fails.
1. Check if the system is normal;
2. Check if the stop valve is open;
3.
Change the driver board.
30
Saturation error of Q
axis current
control integral
1. System overload suddenly;
2. Compressor parameter is
not suitable;
3. Driver board fails.
1. Check if the system is normal;
2. Check if the stop valve is open;
3. Change the driver board.
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