Vii) Troubleshooting - NewMar PM-12-40 Installation & Operation Manual

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
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P.O. Box 1306, Newport Beach, California 92663 • Phone: 714-751-0488 • Fax: 714-957-1621 • E-Mail: techservice@newmarpower.com
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 fuse
5. Defective Power Module
1. AC input select switch set to 115V (560 watt
models) or 115V connector/adaptor installed
(1,000 watt models) while 230V is being applied
2. Internal short
DC output fuse 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
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Possible Cause
1. Using a voltmeter, confirm AC input volt age.
Check input connections. Confirm AC input select
switch is in correct position (560 watt models) or
correct AC connector/adap tor is installed (1,000
watt models).
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.
1. Set AC input select switch to 230V position or
install 230V connector/adaptor. Note: 115V MOV
(RV1) may be damaged by incorrect AC voltage
application. If so, it must be replaced by a qualified
technician. If breaker continues to trip, contact
factory.
2. Return to place of purchase for repair/re-
placement or contact NEWMAR for return
authorization.
Replace output fuse. If fuse blows 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