Driver Error Code; Trouble Shooting - WINTAIR WAW-24/INV Technical And Service Manual

7 . T R O U B L E S H
7 . T R O U B L E S H
The following is the fault code table of driver board.
Analysis of the Driving Board Fault
Driver board fault codes trouble shooting
I． Driver fault code display by indicate lamps of driver board flashing. The times that the lamp flashes equal to
fault code. Flashing Intervals for a period of time again .Indicator light off when no fault.
For example，fault code 3： Indicator light flash 3 times and Flashing Intervals for a period of time
again, reports No. 3 fault.
Fault
Fault Description
code
Q axis current detection,
1
step out of failure
Phase current detection,
2
out of step
Initialization, phase
3
current imbalance
Speed estimation, step
4
out of failure
5 IPM FO output fault
DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3
O O T I N G
O O T I N G
（Except Free-match 20K&16K DUAL TYPES）,
Sheet 5 Driver Error Code
------Except 20K&16 Dual types
Possible Reason of Abnormality
1, compressor wire connect not well;
2, Bad driver board components;
3, Compressor start load is too large;
4,Compressor demagnetization;
5,Compressor oil shortage, serious wear of
crankshaft.;
6.The compressor insulation fault
1. Compressor voltage default phase;
2. Bad driver board components;
3. The compressor insulation fault
Bad driver board components.
1,Bad driver board components;
2,Compressor shaft clamping;
3.The compressor insulation fault.
1.System overload or current overload.
2,Driver board fault;
3, Compressor oil shortage,serious wear of
crankshaft;
4,The compressor insulation fault.
details see sheet 5.
How to Deal With
1, Check compressor wire;
2, Change driver board ;
3,Turn on the machine after pressure balance
again;
4, Change Compressor;
5, Change the Compressor;
6, Change the Compressor.
1,Check compressor wire connection;
2, Change the driver board;
3, Change the Compressor.
Change driver board .
1, Change driver board ;
2, Change the Compressor ;
3, Change the Compressor .
1,Check the air-conditioner system;
2,Change the driver board;
3, Change the Compressor;
4, Change the Compressor.
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