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HVAC

How to Test a Sump Pump

Quick Answer

Pour a bucket of water into the sump pit, the pump should turn on and pump the water out. Test the float switch and the discharge line.

How to troubleshoot How to Test a Sump Pump

A failed sump pump can lead to a flooded basement. This guide explains how to test your sump pump to ensure it's ready for wet weather.

Step-by-Step Fix

  1. Unplug the sump pump and remove the cover to access the pit.
  2. Locate the float switch and ensure it moves freely.
  3. Plug the pump back in and slowly pour a bucket of water into the pit.
  4. Watch the float rise; it should trigger the pump to turn on and pump the water out.
  5. Check the discharge pipe outside for a steady flow of water.
  6. If the pump doesn't turn on, check the power, GFCI, and the float mechanism.

Common Error Codes

CodeMeaningResolution
Pump runs but doesn't pumpClogged impeller or check valveClean the impeller and check the check valve for debris.
Pump doesn't turn onFaulty float switch or power failureCheck the float and ensure the power cord is plugged into a working outlet.

Frequently Asked Questions

How often should I test my sump pump?

At least once a month, especially before rainy seasons.

What is a GFCI and why is it important?

Ground Fault Circuit Interrupter – it shuts off power to prevent shocks; essential for wet areas.