GP-PWM-30-SB
23
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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
Possible Cause:
Current is being limited below 1 Amp as per normal operation or
poor connection between solar array and controller.
How to tell:
1. The State of Charge (SOC) screen is close to 100% and the Sun
and Battery icon are present with an arrow between.
2. With the solar array in sunlight, check the voltage at the
controller solar array terminals with a voltmeter.
3. If there is no reading at the controller solar array terminals, the
problem is somewhere in the wiring from the solar array to the
controller.
