Install Manual
Troubleshooting
Installation Manual for Generac PWRCell Inverter 31
Section 8: 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.
If problems persist, contact the nearest Independent Authorized Service Dealer (IASD) or Generac Customer Service 
at 1-888-436-3722 (1-888-GENERAC).
Table 8-1. General Troubleshooting Guide
Problem Possible Cause Solution
System will not exit 
Safety Shutdown
External shutdown button 
not depressed
Depress external shutdown button
No jumper between STOP 
terminals
Verify jumper is in place between STOP terminals.
CTs will not calibrate
Loose connection Check CT wiring.
Power down inverter, allow screen to go blank, then power 
inverter ON.
No REbus Beacon 
device page
Beacon USB cable not 
connected
Verify Beacon USB cable is connected at both ends. Verify the 
USB cable is correctly connected to the Beacon and also to the 
Beacon accessory port in the inverter wiring compartment.
Beacon wrap-around cable 
not connected
Verify the short wrap-around cable is plugged into Beacon, from 
one port to the other.
Inverter isn’t connected 
to server
Inverter not connected to 
the Internet
Verify the inverter is connected to the Internet via a router. 










