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© 2018 GoPower!
(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.
(4) Disconnect one or both array wires from the controller. Take a
voltage reading between the positive and negative array wire. A single
12 volt module should have an open circuit voltage between 17 and 23
VDC. If you have more than one solar module, you will need to conduct
this test between the positive and negative terminals of each module
junction box with either the positive or the negative wires disconnected
from the terminal.
Remedy:
(2) Reconnect in correct configuration. Tighten all connections. Check
wire gauge and length of wire run. Refer to Suggested Minimum Wire
Gauge in
Section 5
.
(3) Clean modules, clear obstruction or wait for conditions to clear.
(4) If the open circuit voltage of a non-connected 12 volt module is lower
than the manufacturer’s specifications, the module may be faulty. Check
for blown diodes in the solar module junction box, which may be shorting
the power output of module.
