Why Does the Hot Tub Keep Saying, Flo?(Guide)

Can I Drain My Hot Tub on My grass?

Why Does the Hot Tub Keep Saying, Flo?

Hot tubs are a great way to relax and enjoy the outdoors in winter. They come in various sizes and shapes, and one can use them year-round.

Read on for some hot tub tips and tricks to get the most of your outdoor time.Your hot tub keeps saying Flo, and you can’t figure out why? You’re not alone.

In this post, I will show you why your hot tub keeps saying “Flo” and how to fix the problem so that you can enjoy a nice hot bath again.

The common reasons for the FLO error message are hot tub pump is broken, the water is too hot, water is not circulating properly, jets aren’t working correctly,the heater Is faulty and the Spa shell needs replacement. If you still have the FLO error, make sure that you properly connect all the tubs and jets to your control box.

In Details:

Hot tub Pump Has Failed

The most frequent cause of this difficulty is a broken pump. There’s nothing more annoying than your hot tub suddenly saying Flo and knowing that you need to call the repairman to get it fixed.

The good news is that if the pump has failed, there are a couple of places you can take it for repair or replacement.

Your local professional Spa service center will give you advice on where you can take your hot tub.

The Water Is Too Hot

It’s common for hot tubs to run hotter than what the owner is comfortable with, but it’s also essential to get the temperature right to keep your plumbing from failing.

If you need to take your hot tub back to the service provider, make sure you tell them that your hot tub runs too hot for your comfort and ask them what adjustments you can make so that you can keep a comfortable temperature in the water.

The Water Isn’t Circulating Properly

If the problems I have listed above aren’t the cause of your hot tub saying Flo, then most likely it’s because the circulation isn’t working correctly.

The water flow circulates all sides of your hot tub, and if it’s not functioning correctly, you might be able to solve this problem by turning on the jets more gradually or adjusting their timing.

The Jets Aren’t Working Correctly

If your jets aren’t working correctly, then you’ll then need to take your hot tub back to the professional service provider so that they can look at it.

Most Spa jets are just a matter of cleaning and oiling, but if the parts wear out or become old, you’ll need to replace them.

The Heater Is Faulty

One of the most common problems facing homeowners when they decide to install a hot tub is that the heater gets plugged up with gunk over time.

This can cause all kinds of challenges with the functioning of the unit, and you might have to call in a professional repairer if this is something you’re experiencing.

To clean your hot tub heater, it’s best to call in the professionals while they can provide you with instructions on how to do it properly.

The Spa Shell Needs Replacement

If your hot tub shell is faulty or worn out, this can also cause your hot tub to keep saying, Flo.

With the right parts and labor, it’s possible to replace a Spa shell so that you can get back to enjoying your hot tub.

If you need help with this, then let the professional service center get in touch with you.

How Do You Fix The FLO Error On A Spa?

You can fix the FLO error on a Spa by following these steps:

– Turn off the Spa power and unplug it from the wall

– Disconnect the Spa control box from any other cables

– Take a towel or rag and some hot water and wipe down the floor of your Spa. This can remove any chemical residue that may dry onto your floor.

Note: Hot water will be much more effective at removing residue than cold water

– After wiping down, you’ll want to soak up as much moisture as possible by using towels, rags, or paper towels. DO NOT rub or wipe the floor.

The rubbing can create tiny scratches on the surface, which can also cause the FLO error.

– After you have removed as much moisture as possible, you should plug your Spa back in and reconnect your control box

– Your Spa will now power on and start to heat up

– Inspect all the jets for obstructions

– If there are no apparent issues with the jets, then inspect your water chemistry levels

– If you still have the FLO error, make sure that you properly connect all the tubs and jets to your control box

– After you have completed these steps, soak up as much moisture as possible with towels, rags, or paper towels

– Wait several hours for your Spa to be fully powered down and cool down.

– Disconnect your Spa control box from any other cables

– Wipe down the floor of your Spa again with towels or rags. DO NOT rub or wipe the floor. The rubbing can create tiny scratches on the surface, which can also cause the FLO error.

– After you have removed as much moisture as possible, you should plug your Spa back in and reconnect your control box.

– Your Spa will now power on and start to heat up.

Where Is The Flow Switch On A Hot Tub?

The flow switch on a hot tub boasts a location in the most logical and accessible place for any easy access to this functional piece of apparatus.

It is near the bottom of the tub, next to where the in-ground piping enters. The flow switch is not visible when you first look at the tub, but there are two ways to find it.

One way is by using your hand to feel around for it; after switching it off and on, you know that a hole through which you can feel water will signify its location.

The other is by remembering the position of the drain; should you find out the hose has blocked, you can pick up where the water exits.

So, How Does This Plug Flow Switch Work?

A flow switch prevents water from entering or exiting a hot tub. It does this by diverting the water to other parts of the tub.

Like an internal drain and external overflow valve, or shutting off a specific part of the system altogether (something like a pool cover).

The tub flow switch has two prongs that look something like a home fuse outlet.

When the tub is complete, and the water level outside of the in-ground piping is higher than the two prongs, water will flow as expected – entering and exiting through its appropriate channels.

A blockage in any channel will cause the plug to function differently. This plug is an internal device, and you can only access it by using an electric screwdriver (or similar tool) to remove its cap.

And there is another type of flow switch on hot tubs which utilizes air pressure instead of water levels. This is a very advanced, high-end product that many hot tub owners do not use.

Where Is The High Limit Reset Button On My Hot Tub?

The high limit reset button hot tub is necessary when the water temperature rises to a dangerous level.

This button turns off the heater and gas supply and quickly lowers the water temperature. You’ll find the high limit reset button usually positioned on the hot tub in an easy-to-reach location for quick access.

You should turn off all jets so that there is no chance of them accidentally turning back on. You can also open up your hot tub’s(Amazon Link) cover to use natural airflow and cold water from a hose or running tap.

Some hot tubs will automatically turn off the heater when the water temperature reaches 104 degrees Fahrenheit. This will provide a slight increase in the life of your hot tub.

With a 120 volt and 240-volt electric heater, it’s possible to reset and turn back on the electric heating elements with a high limit reset button.

One of the easiest approaches to finding the high-limit reset button is by looking at the circuit breaker panel. Turn off the circuit breaker in your home.

Why Does the Hot Tub Keep Saying, Flo?

The hot tub can flow water, air, or cold water through jets and Spas.

Why Does My GFCI Keep Tripping On My Hot Tub?

GFCI keeps tripping on my hot tub: The primary cause of GFCI tripping is electrical current leakage.

There are two types of current leakage, and they affect different appliances, while one type may not pose an issue to your hot tub.

There are two types of current leakage, and they affect different appliances:

1) Electrically-induced ground faults occur when a leak in the grounding circuit causes the difference in potential for electrical grounding systems to change. The GFCI detects these changes and trips.

This type of leakage may occur if an appliance has a poor ground connection or the grounding wire deflects.

The GFCI will trip on a poorly grounded appliance regardless of distance because you cannot detect the difference in potential for electrical grounding systems.

2) Induced current leakage occurs in a low-impedance environment wherein a change in current flow induces a voltage, which causes the GFCI to trip.

This type of leakage may occur when you plug two appliances into the same receptacle in parallel, and one of them is faulty. Appliances that usually cause this type of leakage include:

  1. An ungrounded power strip
  2. An extension cord with loose connections
  3. A battery charger (such as a car charger) has poor shielding
  4. Appliances with poor grounding or if the ground wire’s disconnected from the receptacle.
  5. Appliances removed from their intended location or moved without being re-grounded include lighting fixtures and appliances commonly moved between rooms, such as surge protectors.
  6. Moved poorly-grounded appliances. Overloaded circuits.

Why Would A GFCI Trip With No Load On It?

A GFCI trip with no load on it is a puzzling situation.

GFCI protection can trip many times per minute if a short or overload occurs, but if there is no load and the breaker has tripped, it can trip once per hour.

Why would a GFCI trip with no load on it? This article will explain the different causes of trips, ranging from simple to complex.

One of the most common causes of GFCI trips is nuisance tripping due to devices like humidifiers, dehumidifiers, and air cleaners.

Most devices have a switch on the side or back outside of the unit that is in series with your home wiring.

If you live in a humid location, chances are you have one or more of these devices in your house; if you do not, you may want to consider installing one.

If there is no load on the circuit, this device will pull current through the switch, causing it to trip. The result will be a brief period when there is no power to the device, turning off.

Now, let’s say you have a humidifier in your bedroom. If the humidity in your house is low and you have a portable air cleaner(Amazon Link) on the same circuit, it will turn on when the humidifier shuts off.

This will cause the humidifier to turn back on. The process repeatedly repeats because of a device that has internal switching designed to minimize energy use or just for convenience.

Nuisance tripping can also result from other built-in switches devices, such as motion detectors for lights, fans, receptacles, or ceiling fans.

Other causes of nuisance tripping include a miswired switch, damaged or lost wiring, loose or missing connections, and blown fuses.

In the case of a fuse blowing, the problem may have nothing to do with the GFCI circuit. It may be ok if you have a GFCI circuit breaker in your panel and it’s not tripping.

However, if the breaker is not working as expected, it may be your GFCI circuit and trip at any time.

Nowadays, many residential GFCI circuits are hard-wired with no circuit breaker installed. This will eliminate the possibility of nuisance tripping due to a miswired switch.

It will also eliminate the case of a blown fuse, which is often hard to find when the whole circuit blows.


Hot tub Flo has everything you need to know about troubleshooting, testing, and repair. The expertise comes from knowing the ins and outs of the entire hot tub industry, both the good and bad.

The valuable knowledge I share with you will ensure that your hot tub functions as expected for years to come.


Hi! I' am Tom. I was a manager in one of the biggest stores for over 10 Years, am also an SEO by night. I don't like to call myself a blogger; they are very analytical, do email marketing, and know all SEO stuff. I faced many questions from customers about different products, and there was hardly any help on the internet. After learning all the things about these products as a manager the hard way, I decided to start a blog and help other people.

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