Miller Electric 280 NT Engine, Check engine charging system according to engine manual

	. A complete Parts List is available at www.MillerWelds.com
D. Engine
Trouble	Remedy
Engine will not crank.	Check fuse F6, and replace if open (see Section 8-6).
	Check battery voltage.
	Check battery connections and tighten if necessary.
	Check plug PLG5 and plug PLG8 connections.
	Have Factory Authorized Service Agent check Engine Control switch S2.
Engine does not start.	Check fuel level (see Section 5-2).
	Check battery and replace if necessary.
	Have Factory Authorized Service Agent check fuel shutoff solenoid FS1 according to engine manual.
	Check engine charging system according to engine manual.
	See engine manual.
Engine starts but stops when Engine	Check oil level (see Section 5-2). Low oil pressure shutdown stops engine if oil pressure is too low.
Control switch returns to either Run/	Engine also stops if oil level is too high.
Idle position.
	Use correct grade oil for operating temperature. (see Section 8-2).
	Have Factory Authorized Service Agent check low oil pressure shutdown switch S5.
Battery discharges between uses.	Place Engine Control switch in Off position when unit is not running.
	Clean top of battery with baking soda and water solution; rinse with clear water.
	Periodically recharge battery (approximately every 3 months).
	Replace battery.
	Check voltage regulator according to engine manual.
Engine stopped during normal	Check fuel level (see Section 5-2).
operation.
	Check oil level (see Section 5-2). Low oil pressure shutdown stops engine if oil pressure is too low.
	Engine also stops if oil level is too high.
	Have Factory Authorized Service Agent check low oil pressure shutdown switch S5.
	Have Factory Authorized Service Agent check fuel shutoff solenoid FS1 according to engine manual.
Engine does not return to idle speed.	Place Engine Control switch S2 in either Run/Idle position.
	Remove all weld and generator power loads.
	Turn off remote contactor. The unit will not return to idle speed when the remote contactor is on.
	Turn off remote device connected to Remote receptacle RC4 (see Section 5-7).
	Check for obstructed movement of solenoid linkage.
	Have Factory Authorized Service Agent check circuit board PC2 and current transformer CT1.
Engine does not go to weld speed.	Place Speed Control switch in Weld position.
	Check for obstructed movement of solenoid linkage.
During operation in near freezing tem-	Treat fuel with isopropyl alcohol de-icer product.
peratures, engine starts and goes to
idle but stalls after a few minutes.
	Place Engine Control switch in the Run position until unit has been in operation and loaded for a peri-
	od of time.
During operation in severe cold weath-	Install engine manufacturer’s kit for cold-weather operation.
er, engine starts and goes to idle but
stalls after a few minutes.

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