Trigger/resume condition
Trigger condition: Open circuit of U-phase lower tube corresponding to compressor.
Resume condition: Check whether the IPM module is working.
Reset method: Change the module board. Power on and start up again.
Possible causes
There IPM module is damaged.
Procedure
Check whether the IPM virtual welding and the PWM related transmission circuit of the MCU are connected to the welding.
If so, change the replace the drive board.
6.19 L6c: Open circuit of V-phase upper tube
Description
Open circuit of V-phase upper tube.
After the fault, the compressor stops running, and if the fault disappears after one minute, the compressor starts again.
Trigger/resume condition
Trigger condition: Open circuit of V-phase upper tube corresponding to compressor.
Resume condition: Check whether the IPM module is working.
Reset method: Change the module board. Power on and start up again.
Possible causes
There IPM module is damaged.
Procedure
Check whether the IPM virtual welding and the PWM related transmission circuit of the MCU are connected to the welding.
If so, change the replace the drive board.
6.20 L6d: Open circuit of V-phase lower tube
Description
Open circuit of V-phase lower tube.
After the fault, the compressor stops running, and if the fault disappears after one minute, the compressor starts again.
Trigger/resume condition
Trigger condition: Open circuit of V-phase lower tube corresponding to compressor.
Resume condition: Check whether the IPM module is working.
Reset method: Change the module board. Power on and start up again.
Possible causes
There IPM module is damaged.
Procedure
Check whether the IPM virtual welding and the PWM related transmission circuit of the MCU are connected to the welding.
If so, change the replace the drive board.
6.21 L6E: Open circuit of W-phase upper tube
Description
Open circuit of W-phase upper tube.
After the fault, the compressor stops running, and if the fault disappears after one minute, the compressor starts again.
Trigger/resume condition
Trigger condition: Open circuit of W-phase upper tube corresponding to compressor.
Resume condition: Check whether the IPM module is working.
Reset method: Change the module board. Power on and start up again.
Possible causes
There IPM module is damaged.
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