Miller CST 282 - Troubleshooting

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Complete Parts List is available at www.MillerWelds.com
7-4. Troubleshooting
Trouble Possible Causes Remedy
No weld output, unit
completely
Inoperative
Line Disconnect Open.
Place line disconnect switch in On position. (See section
5-8 or 5-9)
Blown fuses.
Check and replace line fuses, if necessary, or reset circuit
breaker. (See section 5-8 or 5-9)
Improper input connections.
Check for proper input connections. (See section 5-8 or
5-9)
No weld output
Faulty output diode(s) D1 or D2 or D3 Check for shorts or opens in wiring.
Faulty HD1 Have factory authorized service agent check HD1.
Erratic or improper
weld output
Weld cables too small or defective. Use proper size and type of weld cable. (See section 5-2)
Dirty or loose connections.
Clean and tighten all weld cable connections. (See Sec-
tion 5-4)
Fan not operating
Blocked fan. Check for and remove anything blocking fan movement.
Fan Failure Have factory authorized service agent check fan motor.