Miller Electric Big Blue 600D manual Troubleshooting, Welding

7-10. Troubleshooting

A. Welding

Trouble	Remedy
No weld output.	Be sure Ampere Range switch is not set between positions.
	Disconnect equipment from generator power receptacles during start-up.
	Reset circuit breaker CB3 and/or CB4 (see Section 7-6).
	Place A/V Control switch in Panel position, or place switch in Remote position and connect remote control
	to Remote A/V Control receptacle RC3 (see Sections 4-7 and 4-8).
	Place Output (Contactor) switch in On position, or place switch in Remote position and connect remote
	contactor to optional Remote 14 receptacle RC3 or terminal strip 3T (see Sections 4-7 and 4-8).
	Check and secure connections to Remote 14 receptacle or terminal strip 3T (see Sections 4-7 and
	4-8).
	Check fuse F6, and replace if necessary (see Section 7-6).
	Have Factory Authorized Service Agent check brushes and slip rings, and circuit boards PC1 and/or
	PC2.
Erratic weld output.	Check and tighten connections both inside and outside unit.
	Be sure connection to work piece is clean and tight.
	Use dry, properly stored electrodes.
	Remove excessive coils from weld cables.
	Tighten lead connections to Ampere Range switch.
	Have Factory Authorized Service Agent check circuit boards PC1 and/or PC2.
High or low weld output voltage.	Check engine speed, and adjust if necessary (see Section 7-5).
	Check CC/CV switch position.
	If low weld output, check fuse F6, and replace if necessary (see Section 7-6).
	Have Factory Authorized Service Agent check circuit board PC1.
Wire feeder not operating.	Reset circuit breaker CB3 and/or CB4 (see Section 7-6).
	Check and secure connections to Remote 14 receptacle or terminal strip 3T (see Sections 4-7 and
	4-8).
	Repair or replace wire feeder.
No amperage control or voltage control.	Place Amperage/Voltage Control switch in correct position.
	Check connections to optional Remote 14 receptacle RC3 and terminal strip 3T (see Sections 4-7 and
	4-8).
	Repair or replace remote control device.
	Have Factory Authorized Service Agent check optional CV regulator board PC2.
Low CV weld output.	Set Ampere Range switch to highest range.
Min or max CV weld output only.	Check position of Amperage/voltage control and Amperage/Voltage Control switch.
	Repair or replace remote control device.
	Have Factory Authorized Service Agent check optional CV regulator board PC2.

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