Pool pump not priming? What to check
A pump that runs without moving water is usually sucking air. Most causes are simple, but a pump running dry can overheat and fail.
Safety classification
Safe homeowner task
This guide covers safe first actions only. It is not a licence to perform regulated work or enter a dangerous area.
What to do
- 1
Turn the pump off
Stop the pump at its switch before opening anything. Do not let it keep running dry.
- 2
Check the water level
The water should sit around the middle of the skimmer opening so the skimmer does not draw air.
- 3
Empty the baskets
Clean the skimmer basket and the pump basket, and make sure nothing is blocking the inlet.
- 4
Check the pump lid seal
Make sure the lid O-ring is clean, seated and not cracked, and the lid is tightened by hand.
- 5
Check the valves
Confirm the suction and return valves are open, then refill the pump pot with water and restart.
When to stop
- The pump still will not prime
- It hums, trips power or smells hot
- Water leaks near electrical connections
- Pipes or fittings are cracked
Pool and spa maintenance
Prepare the problem, safety status and location once. The matching category and service will be pre-filled.
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