Part 4 Trouble Shooting

5) Troubleshooting CH23, CH28

 

 

 

 

 

Error

Title

Cause of error

Check point & Normal condition

code

 

 

 

 

 

 

 

23

DC Link

• DC link volt. is

• Check the power source.

 

Low voltage.

140VDC or lower.

• Check the DC Link Voltage.

 

 

 

 

28

DC Link

• DC link volt. is

• Check the power source.

High voltage

140VDC or higher.

• Check the DC Link Voltage.

 

 

 

 

 

Check Point

1. Check the power source.

2. Check the DC Link Voltage.

V

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Only for training and service purposes

Page 59
Image 59
Heat Controller VMC12SB-1/VMH12SB-1, VMC09SB-1/VMH09SB-1, VMC18SB-1/VMH18SB-1 service manual Troubleshooting CH23, CH28

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