Generac Power Systems PWRcell Reference Manual page 35

Problem
PVRSS Not Upon enabling PV Link, the message
Configured PVRSS not configured
'
PVRSS Count Upon enabling PV Link, the message
Mismatch PVRSS Mismatch
'
'SnapRS Installed' does not match number
of SnapRS Detected
'
for PV Link.
Input PV Link device page says,
Overvoltage Overvoltage
connecting too much voltage to the PV Link
input.
Input PV Link device page says,
Reversed This may indicate reverse polarity of the PV
wiring to the input side of the PV Link.
Insulation Insulation Fault
'
Fault page.
Ground Fault Ground Fault
'
appears on PV Link device page.
Arc Fault Arc Fault
'
the PV Link device page.
Low Sun (with no SnapRS installed)
Low Sun is not a fault or an error; it is a PV Link status.
PV Links will enter this state every night when the sun
goes down. Specifically, 'low sun' means there is not
adequate input voltage to the PV Link. If PV Link says,
'low sun' when the sun is shining, do the following:
1. PV Panel Configurations
a. Ensure the configuration of panels connected
to the PV Link do not require PV Link settings
to be changed.
2. PV Link Settings
a. If 4 or fewer 60 cell type solar panels,
determine whether Vin Startup value should be
lowered.
3. Measure Substring Voltage
a. Disable the PV Link from the inverter screen.
b. Unplug PV input +/- from the PV Link and use
Diagnostic Repair Manual
Table 6-1. Troubleshooting
Observed Symptoms
appears.
'
appears. Number of
'
in mod. settings menu
'
Input
'
. This will result from
'
Input Reversed
'
appears on PV Link device
'
or Ground Fault Lockout
' '
or Arc Fault Lockout
' ' '
– Check PV Link Settings
– Disable/ Enable
– Disable/ Enable
– Check PV Link Settings
– Override PVRSS
– Measure Substring Voltage w/SnapRS
– Check PV Wiring
– SnapRS Health Check
– Check PV Panel Configurations
– Measure Substring Voltage
– Check PV Wiring
– Disable/ Enable
.
'
– Check PV Wiring
– Disable/ Enable
– Check PV Wiring
– Disable/ Enable
'
– Check PV Wiring
– Disable/ Enable
appears on
– Check PV Wiring
a DMM to measure cumulative DC voltage
from the substring.
c. If voltage does not match the expected Voc of
the substring, inspect PV wiring.
4. PV Wiring
a. Low sun is either a settings issue or a PV
wiring issue; it is not an issue with REbus
wiring.
b. Check for loose connections, faulty MC4
crimps, or strained wiring management.
Low Sun (with SnapRS installed)
See above description for 'low sun'. For installations
where SnapRS devices are installed on the substring and
the 'low sun' message appears with the sun shining, do
the following:
1. PV Panel Configurations
Section 6 PV Link and SnapRS
Diagnostics
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