It can be stressful when your pond pump stops working, because you need healthy and clear water for your fish. You will want it to start working at the earliest. You can try some basic troubleshooting before rushing to replace your pond pump.

Knowing the problem can help save you both time and money. If you ask That Pond Guy, they will always advise you to always buy from trusted brands like the Oase Pond pumps. This UK-based pond company is known for offering best guidance and maintenance support to help you keep your pond equipment in great shape.

Check Water Supply First

A lack of water is often the reason pumps stop working. Submersible pumps need to be fully underwater; running them out of water can harm the pump.

If the pump starts to sound odd or turns off without reason, see if there is enough water in the tank and if your unit is lying in water. While external pumps prevent this issue, if the inlet gets blocked, it can lower the flow.

Inspect the Power Supply

If the pump is not starting, check where you are getting power. Examine the cord to see if there are cuts or bare wires. Avoid fixing a damaged cord alone since water and electricity are dangerous together.

Working with an electrician or getting a brand-new pump would be best. See if the outlet or circuit breaker is the problem if the cord seems to be working.

Clear Blockages and Clean the Impeller

A weak or sluggish flow can indicate that the pump is clogged. Leaves, algae, and small waste can lead to blocked inlets or impellers. Break the pump apart, clean out anything blocking the way, and scrub the impeller housing.

If the impeller spins too freely (beyond 180°), its clutch may be broken, requiring a replacement. Until the impeller is loosened, the motor will be inoperable.

Fix an Air Lock

When the pump hums but does not move water, it may be due to trapped air. Tilt the pump to bring the water level down and allow ordinary operation. The repair can be completed quickly and with no need for new parts.

Prevent Overheating

Submersible pumps require water for cooling. Letting it run with no water can result in overheating, and it will turn off. If this happens, unplug the pump and put it in cold water for 20-30 minutes before trying again.

Ensure that the pump is completely underwater to prevent the same problems.

Reduce Vibrations and Noise

Sometimes, problems with vibrations, not blockages, may cause continued noise after cleaning. Stand the pump on a foam mat to help keep noise to a minimum. Strained motor sounds suggest that the pump might have to be serviced by a professional or replaced.

When to Call It Quits

Should troubleshooting not be successful, you may need a new pump. Taking care of the home with monthly maintenance allows it to last longer. Still, pumps have a limited life—in case repairs fail, getting an Oase Pond pump will ensure reliable results for a long time.

If you want more information or need parts, That Pond Guy can support you. Patience and carefully checking will usually help you avoid extra costs and ensure your pond is healthy.