Hayward Aquanaut 250 Troubleshooting

If you are having problems with your Hayward Aquanaut 250 Pool Cleaner, you are not alone. Many Hayward Aquanaut 250 owners experience issues with their pool cleaner from time to time, and it can be frustrating to deal with these problems.

I have problems with my Hayward Aquanaut 250

Hayward Aquanaut 250 Pool Cleaner Problems

Below are common issues and solutions for the Hayward Aquanaut 250:

The Hayward Aquanaut 250 doesn’t move or moves too slow.


  • Check wheel RPM.
  • Obstruction in the cleaner itself. If there was an obstruction make sure vanes are replaced correctly.
  • The pump may be turned off or on low speed.
  • The pump may not be primed. Check for leaks in the system (symptoms–bubbles from the returns ?) Possible other problem or obstruction in the system. Pump impeller blocked? Filter needs backwashing. Clean pump basket, skimmers.
  • Turbine vanes/blades in wrong direction and/or wrong side.
  • Problem or obstruction in the system.
  • Obstruction in the cleaner itself.
  • Low wheel RPM (insufficient flow).

The Hayward Aquanaut 250 right wheel will not turn when rotated by hand. (looking from behind)


  • Obstruction in the cleaner itself.

The Hayward Aquanaut 250 right wheel skips teeth when rotated forward by hand. (looking from behind)


  • Wheel hub or right drive gear worn/damaged.

The Hayward Aquanaut 250 loops in the hoses won’t come out.


  • The hoses have been stored in a coiled position. Lay them straight in the sunlight.
  • Clean swivel on cleaner head by running it under a tap.
  • Leaf canister it may be in wrong place or not floating.

The Hayward Aquanaut 250 turns in circles, it wont go straight at all.


  • Wheel hub and/or large drive gear and/or steering slide assembly and/or right drive gear are worn or damaged.

The Hayward Aquanaut 250 does not clean the entire pool.


  • The hose is too short.
  • The float(s) may be in the wrong position. Should be 0.5 to 0.63 metres from cleaner head
  • The Hose Cone Swivel (on the turbine cover) may be dirty.
  • The return fittings may be pushing the cleaner hoses away.
  • Point them down.

The Hayward Aquanaut 250 climbs the wall too much or climbs out.


  • The tire treads and skirts may be worn down.
  • Too much suction or flow.
  • You are not using the Bypass Valve (if hook up is in skimmer).
  • Auto skim plate/vac plate needs adjustment.

The Hayward Aquanaut 250 won’t climb the wall.


  • Too little suction or flow.
  • Float may be in the wrong position.

The Hayward Aquanaut 250 when the pump turns off the hoses pop out of the skimmer or suction inlet.


  • Make sure hose cone is properly placed into inlet/port/water gate.
  • Air in system. When pump shuts off air goes path of least resistance and pops out the hose. Fix air leak.

The Hayward Aquanaut 250 Wheels are wobbly.


  • Bearings are worn please replace.

The Hayward Aquanaut 250 falls on its side and takes too long to recover.


  • The float(s) may be in the wrong position or missing.
  • The hose is too short.
  • The return fittings may be pushing the cleaner hoses away.
  • Check wheel RPM.

The Hayward Aquanaut 250 Turbine vanes /blades pop out of turbine.


  • Wrong side of vane in the turbine hub. Large oval side should be in turbine.
  • Turbine hub possibly worn.


Hayward Aquanaut 250 Replacement Parts

How to Diagnose and Repair a Hayward Aquanaut 250

This guide will help you identify and resolve issues with your Hayward Aquanaut 250 Pool Cleaner.

Why Doesn’t My Hayward Aquanaut 250 Move or Why Is It Moving Too Slowly?

If your Hayward Aquanaut 250 isn’t moving or is moving slowly, start by checking the wheel RPM and looking for any obstructions within the cleaner. Ensure the pump is on and set to the correct speed. Check for priming issues or leaks in the system, which may present as bubbles from the return jets. If the pump impeller is blocked or the filter needs backwashing, address these issues promptly. Also, verify that the turbine vanes are oriented correctly.

What Should I Do If the Hayward Aquanaut 250’s Right Wheel Won’t Turn?

An immobile right wheel on the Hayward Aquanaut 250 usually indicates an obstruction within the cleaner. Inspect and clear any debris that could be causing the issue.

How Can I Fix the Hayward Aquanaut 250’s Right Wheel Skipping Teeth?

If the right wheel skips teeth when rotated forward, this could be a sign that the wheel hub or right drive gear is worn or damaged and may require replacement.

How to Straighten Out Looped Hoses on the Hayward Aquanaut 250?

For hoses that are looped, lay them out in the sun to eliminate the coiling. Additionally, cleaning the swivel on the cleaner head under a tap can help, as can ensuring the leaf canister is correctly positioned and floating.

Why Does My Hayward Aquanaut 250 Turn in Circles Instead of Moving Straight?

Turning in circles may be due to wear or damage to the wheel hub, large drive gear, steering slide assembly, or right drive gear. Inspect these parts for damage and replace as necessary.

How Do I Ensure the Hayward Aquanaut 250 Cleans the Entire Pool?

To ensure full pool coverage, check that the hose is long enough, the floats are positioned correctly (0.5 to 0.63 meters from the cleaner head), and the Hose Cone Swivel is clean. Adjust the return fittings to avoid pushing the cleaner hoses away.

What Causes the Hayward Aquanaut 250 to Climb Walls Excessively or Not Climb at All?

Excessive wall climbing or failure to climb can be caused by worn tire treads and skirts, incorrect suction or flow rates, or not using the Bypass Valve when hooked up in the skimmer. Adjust the auto skim plate or vac plate as needed.

How Do I Keep the Hoses From Disconnecting From the Skimmer on the Hayward Aquanaut 250?

Ensure the hose cone is properly secured in the inlet and address any air leaks that could cause the hoses to pop out when the pump turns off.

What to Do About Wobbly Wheels on the Hayward Aquanaut 250?

Wobbly wheels typically indicate that the bearings are worn and need to be replaced.

How to Fix the Hayward Aquanaut 250 Falling on Its Side?

If the cleaner falls to its side and has trouble recovering, check the position or presence of the floats, the hose length, and the influence of return fittings on the cleaner’s stability. Also, verify the wheel RPM.

What to Do If the Hayward Aquanaut 250’s Turbine Vanes or Blades Pop Out?

If the turbine vanes or blades come out of the turbine, make sure they are installed correctly with the large oval side in the turbine hub. Check the turbine hub for wear and replace if necessary.

Hayward Aquanaut 250 Issues? Need Help?

Users are encouraged to share their tips or frustrations with their Hayward Aquanaut 250 with the community by leaving a comment. Sharing insights and experiences can help other users get the most out of their pool cleaner and avoid common issues.

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