PROBLEM
DIAGNOSIS
"3072ES / 3772ES / 3772ES HD" Service & Parts Manual October 2008
Page 4-43
Trouble Table, HB750-24 Battery Charger (continued)
• Connect the charger to a different AC outlet (on a different circuit) in the
building.
• If the charger operates properly on other AC outlets, a qualified Person
should correct the AC outlet problem.
• If the AC supply checks good, the charger should be replaced.
The AC line
circuit breaker
or fuse is blown
A defective circuit breaker or fuse, overloaded circuit, or a charger problem can
cause this condition.
• Check battery condition following the battery supplier’s instructions.
• Check for dead cells or reduced capacity.
• Replace charger only if other problems are not found.
Batteries do not
fully charge
If the batteries are charged overnight, make sure the AC supply is not being
switched-off at night with other building items.
• Repair the wire.
• If GEL LED remains ON, the charger should be replaced.
GEL LED is ON The yellow wire loop on the back of the charger is damaged, broken or cut,
putting the charger in GEL (sealed) type charging mode.
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