Wrong Voltage or Phase
Cut Motor Leads
Loose or Incorrect Connections
3Ø Motor Running Backwards
After Running First Few Days:
Power Surges (Lightning)
Pump Flow Rate Too High For Sump Design
Discharge Hose Has Become Disconnected
|After Several Months in Service:
Pump Sized Incorrectly
Intake Screen/Impeller Plugged
Methane Gas Migration
Good troubleshooting is common sense. Do not overlook the obvious.
Find and fix the problem. Be careful that you do not just fix the symptom.
Be thorough. Step by step will generally save time!