Uncover the secret reason why your sump pump float is failing

Sump pumps are essential for keeping basements and crawl spaces dry. But when the float switch malfunctions, it can lead to flooding and costly repairs. If you’re wondering “why is my sump pump float not working,” this comprehensive guide will help you diagnose and fix the problem.

Causes of a Malfunctioning Sump Pump Float

1. Float Switch Stuck or Obstructed

The float switch is a ball or cylinder that rises and falls with the water level. If it gets stuck or obstructed by debris, it won’t be able to trigger the pump.

2. Float Switch Misaligned

The float switch should be positioned correctly so that it can move freely. If it’s misaligned or tilted, it may not activate the pump when needed.

3. Broken or Damaged Float Switch

Over time, the float switch can become damaged or broken. This could be due to wear and tear, corrosion, or electrical failure.

4. Loose or Disconnected Wires

The wires that connect the float switch to the pump can become loose or disconnected. This will prevent the switch from activating the pump.

5. Faulty Pump

In some cases, the sump pump itself may be faulty. If the pump is not functioning properly, it won’t be able to respond to the float switch.

Troubleshooting a Sump Pump Float

1. Check for Obstructions

Inspect the sump basin for any debris or objects that may be blocking the float switch. Remove any obstructions and ensure the switch can move freely.

2. Realign the Float Switch

If the float switch is misaligned, gently adjust it to the correct position. Ensure it’s level and can move up and down without resistance.

3. Test the Float Switch

Manually lift and lower the float switch to see if it activates the pump. If it doesn’t, the switch may be faulty and need to be replaced.

4. Inspect the Wires

Check the wires connecting the float switch to the pump. Make sure they are securely attached and free of any damage. If necessary, tighten any loose connections.

5. Test the Pump

If the float switch appears to be functioning correctly, test the pump by connecting it directly to a power source. If the pump doesn‘t operate, it may need to be replaced.

How to Replace a Sump Pump Float

1. Turn off the power to the sump pump.
2. Disconnect the wires from the old float switch.
3. Remove the old float switch from the sump basin.
4. Install the new float switch in the same position as the old one.
5. Connect the wires to the new float switch.
6. Turn on the power to the sump pump and test the system.

Tips for Maintaining a Sump Pump Float

• Regularly clean the sump basin to prevent debris from accumulating.
• Inspect the float switch and wires periodically for any signs of damage.
• Test the sump pump and float switch annually to ensure they are working properly.
• Consider installing a backup sump pump to provide additional protection in case of primary pump failure.

Quick Answers to Your FAQs

1. Why is my sump pump not turning on even though the float is up?

Check for obstructions or misalignment of the float. The float switch may be faulty and need to be replaced.

2. Why is my sump pump running all the time?

The float switch may be stuck in the “on” position or there may be a leak in the sump basin. Inspect the float switch and repair any leaks.

3. Why is my sump pump not pumping water?

The pump may be clogged or damaged. Inspect the pump for any debris or obstructions and test it to ensure it’s functioning properly.

4. Why is my sump pump making a loud noise?

The pump may be clogged or the impeller may be damaged. Clean the pump and inspect the impeller for any damage.

5. How often should I replace my sump pump float?

The frequency of replacement depends on the usage and conditions. Generally, it’s recommended to replace the float every 3-5 years.