Vi) Troubleshooting - NewMar PT-24-20U Installation & Operation Manual

VI) TROUBLESHOOTING

Condtion
A) Batteries are not coming up to full
charge.
B) Charger continues to charge
at 3 amps or more – does not
taper back into charge.
C) Charger does not charge.
D) Charger repeatedly blows input fuse
or circuit breaker feeding AC power
to charger
E) Reverse polarity connection to
charger has caused charger to stop
charging.
Possible Cause
1) Extremely discharged batteries
requiring long recharge time.
2) Charger limiting its output due
to overload or over temperature
conditions.
3) Fan not operating properly causing
charger to protect against over-
heating by shutting off.
1) DC load drawing current from
batteries (not a problem condition).
2) Bad cell in one of the batteries to
which charger is connected.
1) Charger is not receiving AC input
voltage or is not receiving correct AC
input voltage.
2) Charger output is not properly
connected to batteries.
3) Blown wiring fuse.
4) Defective charger.
1) Short in AC wiring feeding power
to charger
2) Internal short
DC Output fuse and possibly other
components blown.
Solution
1) Turn off all D.C. loads and allow
charger 24-48 hours to recharge
batteries. See section I V-B for
explanation of time-out circuit.
2) Reduce D.C. load and/or determine
cause of over temperature state
(See section III-B, "Location").
3) Return for analysis/repair by
servicing dealer where charger
was purchased or contact NEWMAR
for a Return Materials Authorization
number.
1) Turn off main battery switch to
DC electrical panel or turn off all DC
loads if you wish to confirm charger
will output minimal amperage to fully
charge batteries.
2) Check for shorted cell in all wet lead-
acid batteries using a hydrometer.
Replace battery if cell is shorted.
Refer to manufacturer for testing
maintenance-free batteries.
1) Using a voltmeter, confirm, AC input
voltage, check input connections.
2) Refer to DC wiring installation
diagram for proper connections to
batteries.
3) Replace with another of correct
value (see section III-D, "DC Output
Wiring").
4) Return for analysis/repair by
servicing dealer where charger was
purchased or contact NEWMAR for
a Return Materials Authorization
number.
1) Locate and correct wiring short
2) Return for analysis/repair by
servicing dealer where charger was
purchased or contact NEWMAR for
a Return Materials Authorization
number.
Replace output fuse with another of
correct value. If fuse blows, return to
servicing dealer or contact NEWMAR
for Return Materials Authorization.
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