Sinclair SCV-EB Series Service Manual page 79

Notes:
1. When replacing an inverter module, a layer of thermally conductive silica gel should be painted on the IPM module, IGBT, diode, brigde rectifer (on the
reverse side of the inverter module PCB).
Situation 2: L1 or L2 error appears after the compressor has been running for a period of time and the compressor
speed is over 20rps
Power supply is abnormal
DIP Switch S1 setting is wrong
Replace the inverter module
Notes:
1. When replacing an inverter module, a layer of thermally conductive silica gel should be painted on IPM module (on the reverse side of the inverter module
PCB).
5.28.6 L5/L7 troubleshooting
The wire is not connected properly
Inverter module PCB has malfunctioned
Replace the compressor
Note：
1. When replacing an inverter module, a layer of thermally conductive silica gel should be painted on IPM module (on the reverse side of the inverter module
PCB).
L1 /L2
No
No
1
L5/L7
No
No
Re-start the unit once the power supply
Yes
has returned to normal
Refer to the wiring diagram to reset the
Yes
Yes
Ensure wire is connected properly
Yes
Replace inverter module PCB
S1 setting
1
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