No Flow? No Problems

Common issues we hear from our customers at all times of the year are “there is a light on the chlorinator and it’s beeping", "there's no water going through the system" or "the cleaner isn't moving"... All of these are symptoms of no or low water flow through the system.

This can happen for a few reasons, and if not rectified quickly can lead to damaged pumps, broken impellors and leaking mechanical seals, costing much more than expected!


The most common reason for low or no flow is that the baskets are full of debris. By checking and emptying both the skimmer basket (by the pool) and the pump basket (inside the pump) this will free up the water flow, allowing the system to fully ‘prime’ and function at full capacity.

*Always turn the pump off before you remove the baskets, if your pool pump is below water level you will need to close the valves in front of the pump and set the multiport valve on the filter to ‘closed’.

Download our factsheets for easy operation of the 2-way valve and multiport valve.


The second reason can be from a low water level. With long spells of hot weather, no rain or just extra swimming, the water level can drop below the skimmer box and reduce or even stop the flow of water through the system. The ideal water level for your pool is at least halfway up the skimmer box opening (see image).

*When filling up the pool with water from the garden hose or water tank, ensure that you have your water tested for phosphates after your water level is back to normal.

Check if your pump is primed

Look through the clear pump lid, if it looks like there is no water in it, turn it off and unscrew the pump lid (don't lose the o'ring!). Fill up a bucket with pool water and pour it into the pump, this is called priming. Once the water level reaches the top, replace the pump lid with the o ring and turn your pump back on.

Clean your filter

A dirty filter will reduce water flow as the pump can only push water through so much dirt and debris. Try backwashing and rinsing your media filter. If this still doesn't work, turn the pump off and set your filter to recirculate. If you now have normal flow, try backwashing again, if it still doesn’t work you may be due for a media change.

Check pump impeller

click to enlarge

The impeller is essentially a spinning, hollow disc that draws in water at the centre and spins it out at high pressure. If your pump impeller is clogged, it will not be able to move as much water through its 'veins' (see image). This blockage is usually caused by a broken or split pump basket.

Turn the pump off, take the pump lid off and remove the pump basket. Use a small tool or your fingers to remove any debris from the impeller.

If you’re still having continued issues with your pool’s water flow, the fastest and simplest way to find a solution is to call or visit our shop staff who are always on hand to help troubleshoot, don’t forget to bring in a water sample with you, alternatively you can call our Service Department or book a service online.