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Troubleshooting
4–6 975-0053-01-01
100 amp DC breaker
trips.
Current from the array
exceeds the DC input
breaker rating.
A lightning strike hit near
the PV array.
Check array size and ensure the DC input does
not exceed the breaker rating.
Check lightning arrestor, breakers, panels,
diodes, DC wire insulation and other components
for damage. Replace any damaged components
and reset the breaker.
Open 20 amp combiner
board fuse(s).
A short to ground exists in
the DC array wiring.
Array is producing current
in excess of the fuse rating.
Check all DC array wiring for improper wiring
or exposed wires.
Check array size and ensure the DC input current
does not exceed the fuse rating.
PVGFP breaker trips. A ground fault exists in the
DC array wiring.
Check all PV array wiring for improper wiring,
exposed wires, or short circuits.
Problem Cause Remedy