Troubleshooting
Installation Manual for Generac PWRcell Battery 41
Section 7: Troubleshooting
General Troubleshooting
Some common problems are listed in the table below. This information is intended to be a verification that simple
causes can be located and fixed. It does not cover all potential issues. Procedures requiring 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 7-1. General Troubleshooting Guide
Problem Possible Cause Solution
Battery remains in
Waiting state, or shows
“Battery Not Ready”
Battery Disconnect Switch is OFF Turn battery disconnect switch ON.
Battery stack voltage is zero volts /
incomplete series connection
Measure stack voltage using digital multi-meter at screw
terminals on either side of fuse blocks or at main power
harness connector. If zero volts measured, ensure looped
jumpers are installed at any vacant module positions, and
ensure power plugs are fully seated at each battery module.
Battery comms cables are out of
sequence or not fully connected
Double check Cat 5 sequence from module to module.
Make sure module is not upside down.
Ensure Cat 5 cables are fully seated.
Battery fuse(s) are blown
Unplug one battery module before opening fuse holders.
Remove fuses and test each fuse for continuity using a
digital multi-meter.
Battery not recognized by
inverter
Inverter disabled Enable inverter.
REbus not operating
Verify REbus voltage on the home screen of the inverter
control panel.
DC disconnect OFF Verify inverter is disabled, then turn DC disconnect ON.
Loose connection Verify connections are secure.
Insufficient voltage
Measure voltage at the REbus terminals; there should be at
least 360V between RE+ and RE-.
Inverter and battery not using same
PLM channel
Set inverter and battery to same PLM channel.
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