Schumacher XC103, XC75 owner manual Short or no start cycle when

PROBLEM	POSSIBLE CAUSE	SOLUTION
The charger is making an	Circuit breaker is cycling.	The settings may be wrong.
audible clicking sound.		Check the charger settings.
	Battery is defective.	Have the battery checked.
	Shorted battery cables or	Circuit breaker cycles when
	clamps.	current draw is too high.
		Check for shorted cables
		or clamps and replace if
		necessary.
	Severely discharged	The battery may not want
	battery, but otherwise it is a	to accept a charge due to
	good battery.	a run-down state. Allow
		charging to continue until
		battery has a chance to
		recover sufficiently to take
		a charge. If more than 20
		minutes, stop charging and
		have the battery checked.
	Reverse connections at	Shut the charger off
	battery.	and correct the lead
		connections.
Charger makes a loud buzz	Transformer laminations	No problem, this is a normal
or hum.	vibrate (buzz).	condition.
	Shorted Diode Assembly or	Have charger checked by a
	Output Rectifier Assembly	qualified technician.
	(hum).
Short or no start cycle when	Drawing more than the	Crank time varies with the
cranking engine.	engine start rate.	amount of current drawn. If
		cranking draws more than
		the engine start rate, crank
		time may be less than 3
		seconds.
	Failure to wait 3 minutes	Wait 3 minutes of rest time
	(180 seconds) between	before the next crank.
	cranks.
	Clamps are not making a	Check for poor connection
	good connection.	at battery and frame.
	AC cord and/or extension	Check power cord and
	cord is loose.	extension cord for loose
		fitting plug.
	No power at receptacle.	Check for open fuse or
		circuit breaker supplying AC
		outlet.
	The charger may be	The thermal protector may
	overheated.	have tripped and needs a
		little longer to close. Make
		sure the charger vents are
		not blocked. Wait and try
		again.
	Battery may be severely	On a severely discharged
	discharged.	battery, charge for 10 to
		15 minutes at the Fast
		charge rate to help assist in
		cranking.

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