Section 9: Troubleshooting; General Troubleshooting - Generac Power Systems PWRcell XVT076A03 Installation And Owner's Manual

Section 9: Troubleshooting

General Troubleshooting

Some of the more common problems are listed in the table below. This information is intended to be a check or
verification that simple causes can be located and fixed. It does not cover all types of problems. Procedures that
require in-depth knowledge or skills should be referred to an Independent Authorized Service Dealer.
Problem
System will not exit
Shutdown
CTs will not calibrate
No REbus Beacon device
page
Inverter isn't connected to
server
During an extended or
multi-day grid outage, the
system turned OFF
overnight (i.e. the screen
went blank).
Utility grid power went
out; backup loads are not
being powered; inverter
screen is ON.
Utility grid power went
out; backup power is
cycling on and off; Inverter
screen is powered ON.
Utility grid power went
out; backup loads are not
being powered; screen
went blank.
Utility grid power has
been restored after an
outage; backup loads are
not being powered;
screen is ON.
If problems persist, contact the nearest Independent Authorized Service Dealer (IASD), contact Generac PWRcell
Technical Support at 1-855-635-5186, or call Generac Customer Service at 1-888-436-3722 (1-888-GENERAC).
Installation and Owner's Manual for Generac PWRCell Inverter
Table 9-1. General Troubleshooting Guide
Possible Cause
External shutdown button
depressed
No jumper between STOP
terminals
Loose connection
Beacon USB cable not connected
Beacon wrap-around cable not
connected
Inverter not connected to the
Internet
The battery may have discharged
to its Minimum State of Charge
(SoC) and gone to sleep. See
Sleep Mode in the PWRcell
Battery Owner's Manual.
The protected loads disconnect
on the inverter Power Core may
be in the OFF position.
This could be due to an overload
condition where having too many
house loads on at one time has
caused the inverter to protect
itself by purposely blacking out
and cycling on at an increasing
interval.
The battery may not have been
properly connected or fully
commissioned prior to the
outage. Reference Battery Status
LED table in PWRcell Battery
Owner's manual for confirmation
of battery state/ functionality.
REbus sources are depleted or
not available (battery / PV Links).
The inverter assumed worst case
scenario and protected itself from
overload.
Release external shutdown button.
Verify jumper is in place between STOP terminals.
Check CT wiring.
Trigger manual CT calibration from the inverter device menu.
Verify the USB cable is correctly connected to the Beacon and
also to the Beacon accessory port in the inverter wiring compart-
ment. Inspect exposed sections of cable for damage.
Verify the short wrap-around cable is plugged into Beacon, from
one port to the other.
Verify the inverter is connected to the Internet via a router.
Wait until grid power returns or until the sun rises. In an extended
outage, the battery will perform a power search every hour for
four minutes (default). Once solar power is detected during a
power search, the battery will keep the system awake and begin
charging/powering loads. See Power Search and reference the
Battery Status LED in the PWRcell Battery Owner's Manual.
Turn the inverter protected loads disconnect to the ON position.
Inverter LED will be alternating at an interval- blinking green, then
solid red. The home screen and the inverter device page will
show "Islanding" or "Islanded" respectively, alternating with
"Island Overload."
Reduce house loads to recover from this condition.
Contact Independent Authorized Service Dealer (IASD) for
service.
Cycle the inverter backfeed breaker OFF/ON. If problem persists,
contact Independent Authorized Service Dealer (IASD) for
service.
Troubleshooting
Solution
55