Solar Controller User Manual (GP-PWM-30-UL)

GP-PWM-30-UL
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© 2019 Go Power!
Remedy:
Check the panel and to ensure it is not obscured. Clean the panel if it is dirty.
Check that PV cables are connected to the controller.
14.2 Problems with Voltage
Voltage Reading: Inaccurate
Time of Day: Daytime/Nighttime
Possible Cause:
Excessive voltage drop from batteries to controller due to loose connections,
small wire gauge or both.
How to tell:
Check the voltage at the controller battery terminals with a voltmeter and
compare with the voltage reading at the battery terminals.
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.
14.3 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:
The State of Charge (SOC) screen is close to 100% and the Sun and Battery
icon are present with an arrow between.
With the solar array in sunlight, check the voltage at the controller solar array
terminals with a voltmeter.
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.