Device Confirmation - Generac Power Systems PWRcell Reference Manual

1. Disable/ Enable
a. Disable and re-enable the PV Link to clear the
fault.
b. This will force the PV Link to reevaluate the PV
array for Insulation Faults and Ground Faults.
2. Check PV Wiring
a. Disable PV Link.
b. Disconnect the PV inputs +/- from the PV Link.
(1) Use a DMM to measure voltage from PV+
to ground and PV- to ground.
(2) If measuring more than one (1) volt for
either measurement, PV wiring has an
unintended electrical connection to ground
somewhere with the PV substring.
NOTE:
In some circumstances
connection(s) to ground may be of high resistance and
can be difficult to locate. Electrical connections with
system ground can be influenced by weather, specially
moist conditions, and dirty or soiled PV modules.
c. Inspect PV substring wiring for loose
connections, compromised insulation, or faulty
MC4 crimps.
NOTE: Do not use a megohmmeter (megger) on
Generac equipment to check for ground faults. Damage
to sensitive electronics is likely to occur.
Arc Fault
PV Link circuitry is designed to detect series electrical
arching. If seeing this message at the PV Link device
page, the PV Link has detected electrical arcing at its PV
input. This can be a result of: disconnecting or
connecting the PV array to the PV Link with the unit
enabled, a loose connection in the PV substring wiring, or
a partial open in the wiring.
When the PV Link detects an arc fault it will shut down for
five (5) minutes before trying to re-enable.
If five arc fault events are detected within a 24-hour
period, the PV Link will enter arc fault lockout, and will
need to be disabled and re-enabled (and the fault will
need to be fixed) before it will generate power.
1. Disable/ Enable
a. Disable and re-enable the PV Link to clear the
fault.
b. This fault will likely persist.
2. Check PV Wiring
a. Disable PV Link.
b. Inspect PV substring wiring for loose
connections, compromised insulation, or faulty
MC4 crimps with exposed wire—especially
near connection points.
NOTE: Multimeters and megohmmeters (meggers) are
not appropriate tools for identifying arc faults.
Diagnostic Repair Manual

Device Confirmation

1. REbus LED is:
2. At PV Link device page, PV Links say, 'making
3. If SnapRS are installed, 'Enable PVRSS' setting is
4. If SnapRS are installed, the number of 'SnapRS
the electrical
Section 6 PV Link and SnapRS
•
Green indicating all devices are enabled and
functioning normally.
power' (without 'Override PVRSS' on) if the sun is
shining; or they say 'low sun' if the sun has gone
down.
'on'.
Installed' matches the
Detected.'
number of 'SnapRS
35