18 Power Supply Phase Error MP4000

Description

Power Supply Phase Error 

• Shutdown Alarm 
• The power module is not capable of detecting the rotation direction. 
• Indicates: 
• Phase(s) missing at the power supply line. 
• Defective fuse at power module. 
• Power module failure. 
• Heating element problem (used for current load to decide the rotation direction). 

Corrective Action 

• Check fuses on the power module. 
• Check power line voltage on all 3 phases. 
• Use the tester to detect the problem. 
• Replace power module.