GP-PWM-10-FM
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© 2018 Go Power!
2. If there is a voltage discrepancy of more than 0.5 VDC, there is
an excessive voltage drop.
Remedy:
Check all connections from the controller to the battery including
checking for correct wire polarity. Check that all connections are clean,
tight, and secure. Shorten the distance from the controller to battery or
obtain larger gauge wire. It is also possible to double up the existing
gauge wire (i.e. two wire runs) to simulate a larger gauge wire.
Voltage Reading: Controller flashes entire LCD for battery overvoltage
Time of Day: Daytime/Nighttime
Possible Causes:
1. Solar current is too large with respect to battery capacity
2. Electrical short
3. Unregulated charging source
4. Damaged/Old battery bank
How to tell:
1. Calculate the total solar array Isc. Find or calculate the battery
bank capacity in amp hours (Ah). Divide the capacity by the total
Isc. If this number is greater than 5, then consider increasing the
battery bank size. (Note: This is a simplified rule of thumb and
does not cover all system sizing situations.)
4. Have your battery bank tested.
Remedy:
Turn off any secondary charging sources such as a generator. If
possible, turn off solar circuit breakers if the error does not clear after
turning off secondary charging sources. If you suspect an electrical short,
seek the help of a qualified professional or your dealer. Consider having
your battery bank tested or replacing your battery bank. Battery capacity
deteriorates with age and extreme use. Wait for the battery voltage to
fall. Batteries self-discharge over time.
11.3 Problems with Current
Current Reading: 0 A
Time of Day: Daytime, clear sunny skies
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