Troubleshooting

PROBLEM

POSSIBLE CAUSE

 

SOLUTION

CONNECTED

LED is

The battery is not connected

Check for proper connection to

not on.

 

correctly.

the battery.

 

 

 

 

 

 

Battery voltage is at zero volts.

Turn off everything in the car

 

 

 

and try to connect again.

 

 

Input fuse is bad.

Replace the fuse (5 Amp fuse).

 

 

Output breaker is bad.

Push button to reset the breaker.

CHARGING

LED is

Charger is in Abort Mode.

Unplug the charger from the

blinking.

 

 

AC and plug it back in.

 

 

Battery is sulfated.

Use

(Desulfation Mode) for

 

 

 

8 hours.

 

 

 

Battery is bad.

Have the battery checked.

FULL CHARGE

LED

Surface charge voltage is high.

Replace the battery.

is on, but battery is not

Battery voltage is very low and

Unplug the charger from the

fully charged.

 

 

 

the charger detects it as 6V,

AC and plug it back in.

 

 

not 12V.

 

 

All LEDs are lit in an

A button may have been

Unplug the charger from the

erratic manner.

 

pressed while the charger was

AC and plug it back in, without

 

 

being plugged in.

touching the control board.

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Schumacher SCI90 owner manual Troubleshooting, Problem Possible Cause Solution, Connected, Charging, Full Charge LED