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OPERATING INSTRUCTIONS
7.2 PROBLEMS WITH VOLTAGE
Voltage Reading: Inaccurate
Time of Day: Daytime/Nighttime
Possible Causes:
Excessive voltage drop from batteries to controller due to loose connections, small wire gauge or both.
How to tell:
1. Check the voltage at the controller battery terminals with a voltmeter and compare with the voltage reading at the battery terminals.
2. If there is a voltage discrepancy of more than 0.5 V, 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.
7.3 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.
Remedy
:
Check all connections from the controller to the array including checking for correct wire polarity. Check that all connections are clean,
tight, and secure. Continue with the solutions below for additional help on low current readings.
Current Reading: Less than expected
Time of Day: Daytime, clear sunny skies
Possible Causes:
1. Current is being limited below 1 Amp as per normal operation.
2.
Incorrect series/parallel configuration and/or wiring connections and/or wire gauge.
3. Dirty or shaded module or lack of sun.
4. Blown diode in solar module when two or more modules are connected in parallel.
How to tell
:
1. Battery State of Charge screen is close to 100% and the Sun and Battery icon are present with an arrow in between.
2.
Check that the modules and batteries are configured correctly. Check all wiring connections.
3. Modules look dirty, overhead object is shading modules or it is an overcast day in which a shadow cannot be cast.
Avoid any shading no matter how small. An object as small as a broomstick held across the solar module may cause the power output
to be reduced. Overcast days may also cut the power output of the module
Содержание GP-PWM-10-SQ
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