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Only for training and service purposes
Part 4 Trouble Shooting
5) Troubleshooting CH23, CH28
V
23
28
DC Link
Low voltage.
DC Link
High voltage
• DC link volt. is
140VDC or lower.
• DC link volt. is
140VDC or higher.
• Check the power source.
• Check the DC Link Voltage.
• Check the power source.
• Check the DC Link Voltage.
Error
code
Title Cause of error Check point & Normal condition
Check Point
1. Check the power source.
2. Check the DC Link Voltage.