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How do I fix an FL1 error code on my hot tub?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

The FL1 code on a hot tub indicates that there is a problem with the flow sensor. This sensor is responsible for detecting the flow of water through the tub and when it senses that the flow is too low, it will shut the tub off and display the FL1 code. There are a few reasons why this error code may occur, such as if the filter is dirty and needs to be replaced, if there is a blockage in the plumbing, or if the water level in the tub is too low. If the FL1 code appears, it is important to check the filter and the plumbing to ensure there are no blockages, and to check the water level to make sure it is high enough.

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1. Check the filter and make sure it is clean

2.Check the filter 3.Clean the filter if needed 4.Replace the cover

2. Make sure that the jets are not blocked

There are a few things that can be done to ensure that the jets are not blocked. One possibility is to look for debris that may be blocking the jets. Another option is to check the water level and make sure that it is not too low or too high. If the jets are not functioning properly, it may be necessary to take the hot tub apart and clean any debris that may be blocking them.

3. Inspect the heaters and make sure that they are not damaged

The first step is to inspect the heaters to make sure that they are not damaged. If they are damaged, then the code will not be able to be fixed and the heaters will need to be replaced. The second step is to check the wiring to see if it is damaged. If the wiring is damaged, then the heaters will not work properly and the code will not be able to be fixed.

4. Ensure that the thermostat is set to the correct temperature

There are several steps that need to be taken in order to ensure the thermostat is set to the correct temperature in order to fix the fl1 hot tub code. The first step is to turn off the power to the unit. The next step is to locate the thermostat. The thermostat is usually located on the wall near the water heater. The last step is to set the thermostat to the correct temperature.

5. Check the pump and make sure that it is functioning properly

  1. Check the pump by turning it on and off.
  2. Check the hoses and fittings for blockages.
  3. Check the motor for overheating or damaged components.
  4. Check the plumbing for leaks.

6. Inspect the electrical connections and make sure they are secure

  1. Verify all electrical connections are secure.
  2. Check for loose or corroded connectors.
  3. Check for damaged wiring.
  4. Check for damaged insulation.
  5. Check for damaged fuses.
  6. Check for damaged light fixtures.
  7. Check for damaged wiring harnesses.

If the answers above didn't work then you should also try:

  1. Call a hot tub technician for further assistance.