If your tub is displaying this message it simply means that there is an issue detecting water flow. This may occur for a number of reasons. On your spa’s heater, there are sensors that read water flow. These determine the error. The most common reasons for the FLO error message are dirty filters, a low water level, clogged heater tube or inoperative spa pack.
Self Cleaning Tubs: After waiting about 2 minutes, without turning on any of the jet pumps or touching anything on the keypad you should see small bubbles coming from the footwell of the tub.
If you do see these bubbles, your circulation pump is functioning normally. Proceed to Step 2.
If you do not see these bubbles, your circulation pump is not running and likely needs to be replaced. This is the cause of the FLO error. Contact us to have the pump professionally replaced or for parts pricing and availability. See our guide on Replacing a Pump if you wish to replace it yourself.
Conventional Hot Tubs (Serenity, Dreammaker, Sunrise): when approaching the tub, ensure all pumps are turned off.
Press the Pump 1 button one time. You should have water moving inside the tub. Confirm water movement by placing your hand in front of some of the jets.
Continue to press the Pump 1 once more. You should have water moving throughout the tub much more vigorously now. (high speed)
Pressing the Pump 1 button once again should turn the pump off. Wait at least 10s before repeating these steps as pressing too quickly will skew your results.
If the behaviour of the pump exactly follows the above, move on to Step 2.
If not, it is very likely that your pump is the cause of the FLO code. Most commonly, the pump will work only after the second press (high speed). or the pump will not turn on at all. The FLO error occurs when the tub is trying to heat which happens on low speed only. The Pump 1 must be replaced. See Replacing a Pump for more information.
If the error persists, continue to Step 3.
If not, it was likely the fault of a dirty filter or low water level. Maintain that water level and clean or replace your filter before installing to ensure the error message doesn’t pop up again.
Closing these valves will isolate the pump allowing you to disconnect the spa pack without draining the hot tub. Push the valves closed about 95% of the way.
If the valves are rather old, sometimes they can become stuck in the 'closed' position. You do not want it to become stuck as the only fix is to replace the valve. Therefore, it is better to lose a little bit of water instead.
This is quite a simple task which may at first appear complicated.
First, the two black split nuts on either side of the spa pack must be unscrewed from the coupling. (Don't remove the small philips screws from the split nuts unless absolutely necessary) The use of an oil filter wrench will make the process easier if connections are extremely tight.
Then proceed to remove the two screws in the base of the spa pack.
Then carefully twist the spa pack, being careful not to pull or damage any wires, to an angle to where you can inspect the inside of the heater tube. Using a flashlight will make it much easier to spot any debris.
If a blockage is found, a coat hangar bent into a hook can be extremely helpful in dislodging the debris. Ensure the heater tube is completely cleaned before reinstalling the spa pack. Use a garden hose to rinse it if required. Repeat Step 3 in reverse order to reinstall spa pack.
If no blockage is found, proceed to Step 4.
(NEED TO TAKE PIC OF PARTIALLY REMOVED SPA PACK)
