Miller Electric 301 G, DC, Trailblazer DC manual Welding Troubleshooting, Trouble Remedy

SECTION 10 − TROUBLESHOOTING

10-1. Welding Troubleshooting

	Trouble		Remedy
No weld output.		Check control settings.
		Check weld connections.
		Disconnect equipment from generator power receptacles during start-up.
		Place V/A Adjust switch in Panel position, or move switch to Remote position and connect remote
		control to Remote receptacle RC4 (see Sections 5-9and 6-1).
		Check and secure connections to Remote receptacle RC4 (see Sections 5-9).
		Check fuse F1, and replace if necessary (see Section 8-5or 9-7).
		Have Factory Authorized Service Agent check brushes, slip rings, integrated rectifier SR2, and circuit
		boards PC1 and PC2.
Low weld output.		Check control settings.
		Place V/A Adjust switch in Panel position, or move switch to Remote position and connect remote
		control to Remote receptacle RC4 (see Sections 5-9and 6-1).
		Check and clean air cleaner as necessary (see Section 8-3or 9-3).
		Check engine speed, and adjust if necessary (see Section 8-7or 9-6).
		Have Factory Authorized Service Agent check brushes, slip rings, integrated rectifier SR2, and circuit
		boards PC1 and PC2.
		See engine manual.
High weld output.		Check control settings.
		Check and adjust engine speed (see Section 8-7or 9-6).
		Check for obstructed movement of solenoid linkage (see Section 8-7or 9-6).
		Have Factory Authorized Service Agent check circuit boards PC1 and PC2.
Weld output cannot be adjusted.		Check position of V/A Adjust switch (see Section 6-1).
		Have Factory Authorized Service Agent check field current control board PC2.
Erratic weld output.		Check control settings.
		Clean and tighten connections both inside and outside unit.
		Check and secure lead connections to A/V control.
		Be sure connection to work piece is clean and tight.
		Remove excessive coils from weld cables.
		Use dry, properly stored electrodes.
		Check and adjust engine speed (see Section 8-7or 9-6).
		Have Factory Authorized Service Agent check brushes, slip rings, and circuit boards PC1 and PC2.
No remote fine amperage control.		Place V/A Adjust switch in correct position (see Section 6-1).
		Check and tighten connections to Remote receptacle RC4 (see Section 5-9).
No 24 volt ac power output at Remote		Reset circuit breaker CB5 (see Section 8-5or 9-7).
receptacle RC4.
No 115 volt ac power output at Remote		Check fuse F2, and replace if necessary (see Section 8-5or 9-7).
receptacle RC4.
		Reset circuit breaker CB1 (see Section 7-1).

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