Understanding Pool Pump Problems & How to Fix Them

If you own a pool in New Zealand, you know how important a well-functioning pool pump is. It’s the heart of your pool’s circulation system, keeping the water clean and safe for swimming. But what happens when your pool pump stops working correctly? Here are some common pool pump problems Kiwi homeowners face and how to fix them.

1. Pool Pump Not Starting

Possible Causes:

• A blown fuse or tripped circuit breaker
• Loose electrical connections
• Overheating due to a clogged motor

How to Fix It:

• Check your home’s electrical panel for a tripped breaker and reset it if necessary.
• Inspect the pump’s wiring and connections for any damage — if unsure, consult a licensed electrician.
• Clean out debris around the motor to improve airflow and prevent overheating. If the issue persists, you may need a replacement motor, available from retailers like Para Rubber or Pool & Spa Warehouse.

2. Pump Losing Prime (Air Getting In)

Possible Causes:

• A leak in the suction line
• Low water levels in the pool
• A loose pump lid or worn-out O-ring

How to Fix It:

• Ensure your water level is at least halfway up the skimmer opening.
• Inspect and tighten all fittings and connections on the suction side of the pump.
• Remove the pump lid and check the O-ring for cracks or wear. A replacement O-ring can be found at Pool Super Store.

3. Pool Pump Making Loud Noises

Possible Causes:

• Worn-out bearings in the motor
• Debris stuck in the impeller
• Cavitation due to restricted water flow

How to Fix It:

• If you hear a screeching noise, your pump’s motor bearings may be worn. These can be replaced, but if you’re not comfortable with DIY repairs, a professional technician can help.
• Rattling sounds might indicate debris in the impeller. Turn off the pump, open the impeller housing, and remove any obstructions. You can find maintenance kits at Bunnings NZ to help with this.
• If you suspect cavitation, check for blockages in your suction lines and clean the pool filter.

4. Pool Pump Leaking Water

Possible Causes:

• A faulty shaft seal
• A cracked pump housing
• Loose plumbing fittings

How to Fix It:

• If water is leaking near the motor, the shaft seal is likely worn out. You can find replacement seals at The Spa & Pool Shop.
• Small cracks in the pump housing can sometimes be repaired with waterproof epoxy, but if the damage is severe, you may need a new pump.
• Inspect all plumbing fittings and tighten them if necessary.

5. Pump Running But Not Circulating Water

Possible Causes:

• A clogged filter or impeller
• A closed or blocked valve
• Airlocks in the system

How to Fix It:

• Turn off the pump and clean the filter. If it’s a sand filter, backwash it. Cartridge filters should be rinsed or replaced.
• Check all valves to ensure they are open and allowing water to flow freely.
• Prime the pump by filling the pump basket with water and restarting the system. This should help remove any airlocks.

When to Call a Professional

If you’ve tried these troubleshooting steps and your pump is still not working correctly, it might be time to call a professional. Many local pool service providers in NZ, such as Cascade Pools or PoolMinder, offer expert repair services.

Conclusion

A properly running pool pump is crucial for maintaining clear and healthy water. By understanding common problems and knowing how to fix them, you can save money and extend the life of your pool system. Regular maintenance, along with using quality parts from trusted New Zealand suppliers, will keep your pool running smoothly all year round.