22©2006 Sunrise Medical
POWER BASE SECTION
Symptom Possible cause Solution
LED’s do not
turn on
No Power.
Unit not plugged in.
Bad Outlet.
Blown Fuse internal to charger.
D.C. internal board faulty.
Try a known good outlet.
Try another charger.
Try another AC cord.
Yellow LED
blinks 1 time
Battery’s rated capacity exceeds charger rating.
Battery may be damaged or old.
Try another set of batteries.
Try another charger.
Yellow LED
blinks 2 times
Battery’s rated capacity exceeds charger rating
Battery may be damaged or old.
Try another set of batteries.
Try another charger.
Yellow LED
blinks 3 times
Unit may be damaged if A.C. is removed and
re-applied and does not work.
Battery’s rated capacity exceeds charger rating.
Try another set of batteries.
Try another charger.
Yellow LED
blinks 4 times
Battery voltage exceeds charger specifi ed
operating range.
Try a specifi ed set of batteries
Try another charger.
Yellow LED
blinks 5 times
Battery charger overheated.
Remove power, wait ten minutes and then
reapply power.
Physically check all connections
Look for shorts or burning smell
If power is re-applied and fault re-occurs
change charger.
Yellow & Green
LED’s blink
simultaneously
Battery not connected to charger
Too low of voltage less than 6 volts
Reverse Polarity.
Check for good continuity of cable.
Check for good battery
Voltage at charger port Make sure voltage
on meter is reading positive
[no reverse polarity ]
Trouble Shooting
The following checklist should help you to troubleshoot
any of the problems with the charger. Make sure to
observe all Safety instructions.
Lightweight Charger
The Lightweight Charger is a switched mode 8 amp
output charger. Because of its compact size it uses a
forced air cooling system. After the voltage drops to
25.7 volts, the charger will come back on at a lower
Amp range of 2 amps to recycle the batteries.
Fig 1.16
Fig 1.17
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