Troubleshooting - Schumacher Electric BT-175 Owner's Manual

PROBLEM
The display
shows HI .
The display
shows Lo.
The display
screen is
blank.
The screen
flickers or
shows - - - - .

TROUBLESHOOTING

POSSIBLE
CAUSE
The tested battery
is over 15.0V.
The tester does
not work in this
condition.
The tested battery
is under 7V.
The tester does
not work in this
condition.
Voltage of the
tested battery is
too low for the
tester to read.
Clamps are
not connected
properly.
The voltage of
the battery being
tested is unstable.
Make sure battery is
12V.
Recharge and
retest battery. If
reading is the same,
replace the battery.
Recharge and retest
battery. If reading is
the same, replace
the battery.
Check the battery
clamps.
If the battery was
recently charged,
wait 15-30 minutes
to let the battery
voltage stabilize
and then retest the
battery. If there are
any accessories left
on, turn them off,
recharge and then
retest the battery.
If the reading is the
same, replace the
battery.
• 8 •
SOLUTION