Schumacher PSW-22 owner manual Problem Possible Cause REASON/SOLUTION

PROBLEM	POSSIBLE CAUSE	REASON/SOLUTION
Charger makes a loud buzz	Transformer laminations vibrate	No problem; this is a normal
or hum.	(buzz).	condition.
	Shorted Diode Assembly or	Have charger checked by a
	Output Rectifier Assembly (hum).	qualified technician.
Short or no start cycle	Drawing more than the charger’s	Crank time varies with the
when cranking engine.	rated amps.	amount of current drawn. If
		cranking draws more than the
		charger’s rated amps, crank time
		may be less than 3 seconds.
	Failure to wait 3 minutes (180	Wait 3 minutes of rest time before
	seconds) between cranks.	the next crank.
	Clips are not making a good	Check for poor connection at
	connection.	battery and frame.
	AC cord and/or extension cord	Check power cord and extension
	is loose.	cord for loose fitting plug.
	No power at receptacle.	Check for open fuse or circuit
		breaker supplying AC outlet.
	The charger may be overheated.	The thermal protector may have
		tripped and needs a little longer
		to reset. Make sure the charger
		vents are not blocked. Wait and
		try again.
	Battery may be severely	On a severely discharged battery,
	discharged.	charge for 10 to 15 minutes in the
		manual charge rate to help assist
		in cranking.
Charger will not turn on	AC outlet is dead.	Check for open fuse or circuit
when properly connected.		breaker supplying AC outlet.
	Poor electrical connection.	Check power cord and extension
		cord for loose fitting plug.
The battery is connected	Clips are not making a good	Check for poor connection at
and the charger is on, but	connection.	battery and frame. Make sure
is not charging.		connecting points are clean.
		Rock clips back and forth for a
		better connection.

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