Trouble Shooting Guide - Optex EcoOnline User Manual

9 Trouble Shooting Guide

Note: solar panels have no moving part and are extremely reliable. The only components that can fail are the diodes
which can short out a panel and produce a 0V across the junction box terminals. The following is a step by step
trouble shooting guide:
Measure the open circuit voltage using a multimeter with the panel in full sun.
(Note: in diffuse sun or hot conditions the voltage can be slight lower ~19V)
20V-22V open circuit voltage
Next, connect solar panel to your charging system
Measure charging current using multimeter
Current okay
Under ideal cool and
sunny conditions
charging current should
be close to the I
max
rating on the back of
the panel
Check your charging system and
the health of your battery
Please check the trouble shooting
guide for your regulator and/or
battery
Eco Online™ Solar Panel -- Installation and User Manual
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Do you get 20V-22V?
Little Current
Note, charging current
can depend on the
state of the battery
EcoOnline for a Warranty Claim
Less than 18V open circuit in full sun
Unsolder and remove the diodes in the junction
box and again measure the open circuit voltage
20-22V open circuit
Please contact
EcoOnline for new
diodes
Charging system and battery
is okay but panel is still not
charging
Please return the panel to
Still less than 18V
Please return the
panel to EcoOnline
for a Warranty Claim
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