GP-PWM-10
_________________________________________________________________________________
18
© 2017 Go Power!®
There may be a slight difference between the battery voltage displayed
on the GP-PWM-10 display and the battery voltage measured at the
battery terminals. When troubleshooting using a voltmeter, check both
the battery voltage at the GP-PWM-10 controller terminals and battery
voltage at the battery terminals. If a difference of more than 0.5 volts is
noted, this indicates a large voltage drop possibly caused by loose
connections, long wire runs, small wire gauge, faulty wiring, a faulty
voltmeter or all the above. Consult the Suggested Minimum Wire Gauge
chart in
Section 5
for wiring suggestions and check all connections.
11.0 Troubleshooting Problems
How to Read this Section
Troubleshooting Problems
is split into three sub-sections, grouped by
symptoms involving key components. Components considered irrelevant
in a diagnosis are denoted ‘Not Applicable’ (N/A). A multimeter or
voltmeter may be required for some procedures listed.
It is imperative all electrical precautions stated in the Warning Section
and outlined in the Installation Section are followed. Even if it appears
the system is not functioning, it should be treated as a fully functioning
system generating live power.
11.1 Problems with the Display
Display Reading:
Blank
Time of Day: Daytime/Nighttime
Possible Causes:
Battery or fuse connection and/or solar array connection
(Daytime only) or battery or fuse connection (Nighttime only).
How to tell:
1. Check the voltage at the controller battery terminals with a
voltmeter and compare with a voltage reading at the battery
terminals.
2. If there is no voltage reading at the controller battery terminals,
the problem is in the wiring between the battery and the
controller. If the battery voltage is lower than 6 volts the
controller will not function.
