13. Troubleshooting
57SS-SVM001A-EM
Table 4 Drive fault code (48K/60K)
Fault
code
Fault description Possible reasons for abnormality How to deal with
1
Q axis current detection, failure in
drive control
1. Compressor wire is not connected
properly;
2. Bad driver board components;
3. Compressor start load is too large;
4. Compressor demagnetization;
5. Compress or oil shortage serious
wear of crankshaft;
6. The compressor insulation fails.
1. Check the wire of the compressor;
2. Change the driver board ;
3. Turn on the machine after the
pressure is balanced again;
4. Change the compressor;
5. Change the compressor;
6. Change the compressor.
2
Phase current detection failure in drive
control
1.Compressor voltage default phase;
2.Bad driver board components;
3.The compressor insulation fault.
1.Check compressor wire connection;
2.Change the driver board;
3.Change the compressor.
3 Initialization, phase current imbalance Bad driver board components. Change the driver board .
4
Speed estimation, failure in drive
control
1.Bad driver board components;
2.Compressor shaft clamping;
3.The compressor insulation fails.
1.Change the driver board ;
2.Change the compressor ;
3.Change the compressor .
5 IPM FO output fault
1. System overload or current over-
load.
2. Driver board fails;
3. Compressor oil shortage,serious
wear of crankshaft;
4. The compressor insulation fault.
1.Check the air conditioner system;
2.Change the driver board;
3.Change the compressor;
4. Change the compressor.
6
Communication between driver board
and control board fault
1.Communication wire is not connect-
ed well;
2. Driver board fault;
3. Control board fault;
1. Check compressor wire connection.
2. Change the driver board;
3. Change the control board ;
7 AC voltage,overload voltage
1. Supply voltage input is too high or
too low;
2. Driver board fails;
1.Check power supply;
2.Change the driver board;
8
DC voltage,overload
voltage
1. Supply voltage input is too high ;
2. Driver board fault;
1. Check power supply;
2. Change the driver board;
9 AC voltage imbalance Driver board fails; Change the driver board;
10
The PFC current detection circuit fault
before compressor is ON
Bad driver board components; Change the driver board
11 AC voltage supply in outrange
1.Power supply abnormal, power fre-
quency out of range;
2.Driver board fails;
1. Check the system;
2. Change the driver board;
12
Products of
single-phase PFC over-current, FO
output low level
1. System overload, current is too
large;
2. Driver board fault;
3. PFC fault.
1. Check the system;
2. Change the driver board;
3. Change PFC.
Inverter over current (3-phase power
supply air conditioners)
1. System overload, current is too
large;
2. Driver board fault;
3. Compressor oil shortage, serious
wear of crankshaft;
4. The compressor insulation fault.
1. Check the system;
2. Change the driver board;
3. Change the compressor;
4. Change the compressor.
13 Inverter over current
1. System overload, current is too
large;
2. Driver board fault;
3. Compressor oil shortage,serious
wear of crankshaft;
4. The compressor insulation fault.
1. Check the system;
2. Change the driver board;
3. Change the compressor;
4. Change the compressor.
14
PFC over
current(single-phase air-conditioner)
1. System overload, current is too
large;
2. Driver board fault;
3. PFC fault.
1. Check the system;
2. Change the driver board;
3. Change PFC.
Phase imbalance or phase lacks or the
instantaneous power failure (only for
3-phase power supply air conditioners)
1.3-Phase voltage imbalance;
2.The 3-phase power supply phase
lost;
3. Power supply wiring is wrong;
4. Driver board fault.
1, Check the power supply;
2. Check the power supply;
3. Check the power supply wiring
connection;
4. Change the driver board.
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