Schumacher Electric SE-1275A Owner's Manual download pdf (Page 18)

• 14 •

PROBLEM POSSIBLE CAUSE REASON/SOLUTION

The measured current is

much lower than what was

selected.

The charger reached the

maximum voltage and is

reducing the current.

No problem, this is a normal

condition.

Ammeter reads less than

selected charge rate when

charging a discharged

battery

Extension cord is too long

or wire gauge is too small.

Weak cell or sulfated plate

in battery.

Battery is only partially

discharged.

Use a shorter or heavier

gauge extension cord.

A sulfated battery will even-

tually take a normal charge

if left connected. If the bat-

tery will not take a charge,

have it checked.

Continue to charge the

battery.

The charger is making an

audible clicking sound.

Circuit breaker is cycling.

Battery is defective.

Shorted battery cables or

clips.

Severely discharged bat-

tery, but otherwise it is a

good battery.

Reverse connections at

battery.

The settings may be wrong.

Check the charger settings.

Have the battery checked.

Circuit breaker cycles when

current draw is too high.

Check for shorted cables or

clips and replace if neces-

sary.

The battery may not want

to accept a charge due to

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.

Shut the charger off and

correct the lead connec-

tions.

Charger makes a loud

buzz or hum.

Transformer laminations

vibrate (buzz).

Shorted Diode Assembly or

Output Rectiﬁer Assembly

(hum).

No problem, this is a normal

condition.

Have charger checked by a

qualiﬁed technician.

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