AuCom CSX-007 Service Manual page 6

TROUBLESHOOTING
Figure 2: Bypass relay control pins (37 kW ~ 55 kW models)
Figure 3: Bypass relay control wires (75 kW ~ 110 kW models)
PCB Visual Inspection
Damage to the MOV on the Main Control PCB may indicate that incorrect control voltage has been applied to the
unit.
Figure 4: Location of MOV on Main Control PCB
Damage to the MOVs and/or surrounding circuitry on the Interface PCB may indicate that the soft starter has suffered
overvoltage. This usually also damages the SCRs.
710-02696-00C CSX Series Page 5