Owner’s Manual | GP-PWM-25 Regulator
10
© 2009 Carmanah Technologies Corporation
Last revised July 2009
7.0
Before You Read Troubleshooting
Before a problem is suspected with the system, read this section. There are numerous events
that may appear as problems but are in fact perfectly normal.
It seems like my flooded batteries are losing water over time.
Flooded batteries may need to have distilled water added periodically to replace fluid loss during
charging. Excessive water loss during a short period of time indicates the possibility of
overcharging or aging batteries.
When charging, my flooded batteries are emitting gas.
During charging, hydrogen gas is generated within the battery. The gas bubbles stir the battery
acid allowing it to receive a more full state of charge. Ensure they are in a well ventilated space.
My voltmeter shows a different reading than the GP-PWM-25 display
The meter value on the GP-PWM-25 display is an approximate reading intended for indication
purposes only. There is an approximate 0.1 volt inherent error present that may be accentuated
when compared with readings from another voltmeter.
There may be a slight difference between the battery voltage displayed on the GP-PWM-25
display and the battery voltage measured at the battery terminals. When troubleshooting using a
voltmeter, check both the battery voltage at the GP-PWM-25 battery terminals and battery voltage
at the battery terminals. If a difference of more than 0.5 Volts is noted, this indicates a large
voltage drop possibly caused by loose connections, long wire runs, small wire gauge, faulty
wiring, a faulty voltmeter or all the above. Consult the Suggested Minimum Wire Gauge chart in
Section 5 for wiring suggestions and check all connections.
