Zoeller Battery Backup Sump Pump Troubleshooting
Lastly, the battery of the pump can also be a culprit. If I were you, I would take the battery to a battery specialist to have it checked professionally. 3. Pump Runs But It''s Pumping Very Little or No Water. Your battery backup sump pump like Zoeller Aquanot 507 will operate but it will pump little or no water due to low battery.