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Generac PWRcell › Problems

Generac PWRcell battery is full but the house still draws from the grid

The PWRcell battery is full and the system is set to self-supply, but the house keeps drawing from the grid and the app shows no error. This page covers what the battery lights mean, what to check first, and the cause behind it.

What the lights mean

What you seeWhat it means
Battery status light green, blinking fast (every 0.5 seconds)The battery is discharging.
Battery status light solid greenThe battery is charging.
Battery status light green, strobing every 2 secondsThe battery is in standby.
Battery status light solid orangeThe battery is disabled.
Battery status light red, strobing every 8 secondsThe battery is sleeping.

What to check first

  1. Check in the app that the system is set to self-supply and that the battery shows full.
  2. Check the app for any error message.
  3. Look at the battery status light and note what it is doing.
  4. If the battery is full, self-supply is set, no error shows and the house still draws from the grid, contact Generac support.

The causes and the fixes

Partners see the causes behind this problem, most common first, the checks that tell them apart, and the fix for each, with part numbers and recent prices when a part is involved.

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Manufacturer documents