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Writer's pictureAeron Spa Care

How To Fix A Flow Error In Your Hot Tub

Updated: Feb 24

Hot tubs are wonderful additions to any home, providing relaxation and therapeutic benefits. However, like any mechanical system, they can encounter issues from time to time. One common problem that hot tub owners may encounter is a flow error, which can disrupt the functioning of the hot tub and prevent you from enjoying its benefits. In this guide, we'll walk you through the steps to diagnose and fix a flow error on your hot tub so you can return to enjoying its soothing waters.


Water coming out of a fountain into a hot tub


  1. Understanding Flow Errors: Flow errors typically indicate a problem with the water flow in your hot tub. This could be due to a blockage, a faulty pump, or issues with the filtration system. When a flow error occurs, your hot tub's control panel will display an error code, often accompanied by a message indicating a lack of water flow.

  2. Check Water Level: The first thing to do when you encounter a flow error is to check the water level in your hot tub. A low water level can cause the pump to lose its prime, leading to flow issues. Ensure that the water level is within the recommended range indicated by the manufacturer. If you can't find the fill level sticker, ensure the water level is high enough to flow into the filter housing.

  3. Inspect Filters: Clogged or dirty filters can restrict water flow and trigger a flow error. Remove the filter cartridge(s) from your hot tub and inspect them for any debris or buildup. If the filters are dirty, clean them thoroughly according to the manufacturer's instructions or replace them if necessary. If that doesn't work, try running the hot tub without the filter inserted. If the water has started flowing, try a new filter. Contact us today to buy a new filter - Click Here

  4. Check for Blockages: Inspect the skimmer, drain, and any other areas where debris may accumulate for blockages. Even small obstructions can disrupt water flow and trigger a flow error. Clear any debris or obstructions that you find to restore proper water circulation.

  5. Test the Pump: If you've checked the water level, cleaned the filters, and cleared any blockages but are still experiencing flow errors, the issue may lie with the pump. Test the pump to ensure that it is operating correctly. Listen for any unusual noises or vibrations, which could indicate a problem with the pump.

  6. Check for Air Locks: Air locks can prevent water from circulating properly in your hot tub, leading to flow errors. To release any air locks, you may need to prime the pump or manually purge air from the system. Consult your hot tub's manual for instructions on how to do this properly.

  7. Verify Plumbing Connections: Inspect the plumbing connections and shut off valves around the pump and filter system to ensure that they are secure and free from leaks. Loose or damaged connections can disrupt water flow and cause flow errors.

  8. Reset the System: If you've tried all of the above steps and are still experiencing flow errors, try resetting the hot tub's control panel. Sometimes, a simple reset can clear minor glitches and restore normal operation. You can do this by switching it off at the wall and switching it back on.

Dealing with a flow error on your hot tub can be frustrating, but with a systematic approach to troubleshooting, you can often identify and fix the underlying issue. If you cannot resolve the issue on your own, don't hesitate to contact a professional hot tub technician for assistance.


Aeron Spa Care Pricing:


Call-out - £50.00

Labour - £30.00 per hour

Mileage - £1.00 per mile over 20 miles


Contact us today for a call-out repair - Click Here

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