Vii) Troubleshooting - NewMar PM-12-40A PM Series Installation And Operation Manual

Power module power supply/battery charger
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VII) Troubleshooting

Condition
A. No output current
B. PM repeatedly trips input circuit
breaker with no battery or load
connected
C. Reverse polarity battery
connection to PM has caused PM to
stop charging
D. High output voltage measured
across "V OUT" terminals
E. Batteries connected to PM
overcharging
8
P.O. Box 1306
Newport Beach
California 92663
Solution
1. PM not receiving AC input voltage or is not
receiving correct input voltage
2. PM limiting its output due to overload or
ambient over temperature condition
3. One or both fans not operating properly,
or filter clogged, causing over temperature
condition and PM power reduction
4. Blown output fuses
5. Defective Power Module
Internal short
DC output fuses and possibly other compo-
nents blown
Batteries not connected to PM. It is normal to
read 1/2 volt higher across "V OUT" terminals
with no battery connected
1. Batteries connected to "V2" output terminals.
"V2" output is approximately .7 volt higher than
"V OUT" output
2. Output voltage adjusted too high
Possible Cause
1. Using a voltmeter, confirm AC input volt age.
Check input connections.
2. Reduce DC load and/or determine cause of
over temperature condition.
3. Clear or replace clogged fan filter. Remove
fan obstruction, or replace fan if necessary. (See
section IV-D, Cooling Fans)
4. Replace blown fuse (See section IV-B, DC
Output.)
5. Return to place of purchase for repair/re-
placement or contact NEWMAR for return
authorization.
Return to place of purchase for repair/re placement
or contact NEWMAR for return authorization.
Replace output fuses. If fuses blow again, return to
place of purchase for repair/re placement or contact
NEWMAR for return authorization.
Check for tight connection of charging leads from
PM to batteries.
1. Move positive output wire from "V2" position to
"V OUT" position.
2. Lower output voltage (See section IV-B, DC
Output.) to battery manufacturer's recommended
charging voltage
E-Mail: techservice@newmarpower.com
Phone: 714-751-0488
Fax: 714-957-1621

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