Spa Water Level Drops When Pump Is On

Why Does My Spa Drain Down When the Pool Pump Shuts Off?

Rob comes from a pool-service industry background with more than two decades of expertise. The pump has been turned off, and the spa water level is decreasing. Rob Hampton is a writer and musician who lives in New York City.

Is the Spa Leaking?

If the spa empties down after the pump is turned off, it is unlikely that the spa is leaking in the majority of situations. It is possible that the spa is leaking because the water level in the pool has dropped significantly. When a pool/spa combo is in regular operation (pool mode), the spa is typically programmed to overflow into the pool, making a spa leak difficult to detect.

If It Doesn’t Leak, Why Is It Draining?

If the water level in the spa is higher than the water level in the pool, the spa will equalize itself to the level of the pool when the pump stops pumping water to both the spa and the pool. This is known as the equalization process. There is no water being wasted. Despite the fact that it is not readily apparent, the pool really receives the same quantity of water that has been equalized from the spa.

What Is Causing This, and Can It Be Fixed?

This is something that can be remedied! A check valve is the underlying source of the problem. It is possible that an existing check valve has been installed and has to be replaced, or that there is no check valve installed at all. This valve has a spring (or floater ball) inside it that allows water to only flow in one direction when the valve is opened. When the pump is turned off, water cannot return to the pool through the returns, preventing the spa from equalizing and allowing it to remain fully stocked.

It will be necessary to replace the check valve in this situation.

More About Pool and Spa Combination Pools

Water for both the spa and pool is shared in a pool/spa combo pool, making it more environmentally friendly. The majority of them utilize the same pump, while some may have an additional spa pump. The location of the valve is the most important aspect in deciding where the water is flowing. If you have a spa, the most frequent position for valves is to feed water into both the pool and spa at the same time to produce a “overflow” or fountain effect while the spa is not in use. “Spillover” is the term used to describe this phenomenon.

An automated system can control the lighting, heat, and a variety of other pool characteristics.

If the return valve is turned toward the spa, this will result in an overflow of water (fountain) Rob Hampton is a writer and musician who lives in New York City.

Content is provided solely for informative and entertainment reasons and should not be relied upon as a substitute for personal counsel or professional guidance in commercial, financial, legal, or technical problems, unless otherwise specified.


Question:After lowering the water level in the spa, should I refill the spa with water before resuming use of the pool? In fact, while the spa is in regular operation, the main drain should already be in the closed position, and the pump will not draw water from the spa. Rob Hampton was born in the year 2018. Rob Hampton (author) wrote this on June 29, 2019 in Port Richey, Florida: Hello, Jorge. It’s a difficult question to answer. Somewhere along the overspill pipe or even a leak via the spa returns could be the source of the problem.

Jorgeon The 28th of June, 2019: Can you think of another possible explanation for the water flowing from the spa into the pool?

Despite this, my spa continues to lose water to the pool.

PSC Ep. 79: Why is my spa draining when I turn off my pool pump?

Typically, the spa is located above the water line of the pool, so if something goes wrong, the water from the spa will drain out. As for the reason for this, the most typical reason is a faulty check valve, which is located above the water line of the pool. There is a check valve in the spa that serves to keep the water in the spa from overflowing, and debris can become lodged in the check valve or the check valve can simply stop working. In most circumstances, you can just open up the check valve and inspect it; however, there are flapper style valves, and you may only need to replace the flapper, or you may need to replace the entire valve assembly.

  1. Several more reasons exist for the existence of diverter valves, which regulate spa suction if the valve is left open or even partially open when the pump is turned off.
  2. There is a gate within those diverter valves, and over time that gate may wear out or the seal on that gate may become broken, in which case you may need to repair the internals of that valve, which will cost you money.
  3. In the final instance, you might have an air leak.
  4. However, if there is an air leak, the system loses its seal and the water rushes back into the pool.

PB Question – Spa Water Level Dropping

One of three possibilities. One or more cracks in the spa shell, as well as a fitting such as the edge of a drain or a jet, are allowing water to flow in. Although unlikely, it is feasible. Although it is possible, it is not very likely. This would include emptying the spa and inspecting the borders for fractures and holes. Finding them entails checking with either a dye pen syringe (which had a 3″ tube to decrease currents) or food coloring to see whether the spacing is pulling water into the syringe chamber.

Almost certainly.

To avoid marring the screws, use a3 Phillips head screws.

NeverLube valves are known for their dependability, thus this is unlikely.

My assumption is that the equipment is above the water level and below the water level (requires the pool and spa be plugged, drains too). I’m aware that the actuator is connected to the valve. To avoid marring the screws, use a3 Phillips head screws. Scott

Low Water In Spa

Lindy. Both responses are essentially stating the same thing. Allow me to explain more. Your hot tub is at a greater elevation than your pool, for obvious reasons. As soon as the system is turned off, the water will either return to your pool through your jets or through your hot tub fountain until both are at the same level. Now. The most typical type of construction in my region is the installation of a pool/spa combo, with the contractor adding a fountain in your hot tub rather than a check valve on the return side/pressure side of your pool/hot tub.

  • Your solution is significantly less complicated than adding a check valve; all you have to do is put the ridiculous fountain back where it belongs when you aren’t using your hot tub.
  • I hope that I have been of assistance.
  • Take note that while most pools are in their “regular” cycle, the hot tub jets and the main drain for the hot tub are both turned off, with the only opening being the fountain, which allows for circulation.
  • Installing a check valve is not always essential; in many cases, you may just change the internal components of the one you currently have (for example, a jandy check-valve).

Spa Drains To Pool Level When Filter Not Running.

In my backyard, I have a plaster pool with a spa to the side that trickles into the pool, meaning that while the pump/filter is working, the spa is supposed to overflow into the pool like a miniature cascade. Here’s some crucial background information: Recently, I began cleaning the pool on my own time. I use a long tube with vacuum cleaner attachment to suck up the leaves in the skimmer because there is no polaris on the tank. There was no sucktion the first time I tried it so I turned the tiny lever on the rear of one of the motorized valves that switches the entrance from skimmer to spa to see if that would help (I was thinking it maybe done spa to skimmer at the time).

  • I quickly understood that I shouldn’t have messed with that valve and quickly switched the switch back, allowing the spa to fill up once more.
  • I’m not sure how, when, or why this happened, but the skimmer started sucking.
  • to 8 p.m., Monday through Friday), the spa isn’t quite as low as it was that one time, but it is still about 8 inches lower.
  • I’m guessing that the water is pouring into the pool each evening through a valve and not draining away someplace else.
  • If the motorized valve had not fully spun, I attempted flipping it around and back again to see if it would make a difference; but, it made no difference.
  • the valve turns on and off pretty frequently everytime we turn on the spa.
  • In my mind, when the pump is turned off, the water is draining from the upper spa level to the lower water level in the pool, and if this is the case, I believe it is passing through the drain or the return line.
  • That valve I was messing with a few days ago is presumably where the leak is coming from, however the valve is now back in its original place, so I’m not sure how to fix it.

Q2)Is there any risk in what I’m doing, assuming I’m not truly losing water but rather simply moving it from spa to pool and back? For example, if my plaster isn’t immersed, may it begin to fracture or break in some other way? This is the primary source of concern for me. The author, Allan

Why Is My Hot Tub or Spa Draining?

Everyone enjoys a relaxing bath in the hot tub, which is why having a spa on-site is such a convenient convenience. With every hot tub, there are a variety of technical faults that might arise, transforming your oasis of relaxation into a source of constant headaches. If you perform routine maintenance on your spa, you may still encounter a typical problem in which the water drains when it is not intended to. In any case, it isn’t like you can sit there and monitor it all day and guarantee that it is always full!

Troubleshooting Your Draining Spa

There are a handful of possible reasons why your spa may be draining, so you’ll need to conduct some troubleshooting to figure out which one is causing the problem. The good news is that these issues are rather straightforward to investigate. This will make the process of either obtaining the item yourself or contacting a reputable pool care firm to complete the repair much more straightforward. When it comes to spas that drain, there are normally two possibilities that occur.

Draining at Night When the Motor Isn’t Running

Replace the check valve and see if it helps. Designed to prevent water from flowing back into the pipes, this component is frequently subjected to significant wear and tear in spas that are elevated above the level of the pool. Most of the time, the check valve may be found above ground near the pool pump. Because the water levels in the spa are higher than those in the pool, empty the spa until it is equal to the water level in the pool before trying the repair. Be careful to turn off the electricity to the pump and filter before beginning the repair.

Draining While the Motor IS Running

The suction valves must be adjusted to the right setting. Make sure the spa’s suction valve is in the “off” position and that the spa return valve is at least half open before using the spa. This will aid in the smooth flow of water between the pool and spa. Whether the suction valves are working well, you may want to check to determine if the actuator has failed.

Spa Maintenance

When it comes to maintenance, jacuzzis are no different from pools, so it would be wise to consult with an experienced expert like those at AO Pools to ensure that it runs properly. An experienced pool care firm will be able to diagnose your problems, but they will also be more adept at avoiding them from occurring in the first instance. Get in touch with us right now.

Why does my spa drain when pump is off?

Asked in the following category: General The most recent update was made on the 19th of March, 2020. If your spa drains down after the pool has been turned off, the odds are that the check valve has failed. This might indicate that the check valve is faulty or that debris has been lodged inside of it. So these are the most typical causes that may cause your spa to drain when the pool is running or when it is not running, respectively. Normally, if a pool system is in excellent working order, the water will not drain out of the pump or anyplace else when the system is turned off.

Another reason why yourspacoulddrainout is because of a clogged drain. Also, how can I determine whether there is a leak in my hot tub? As one component fails, it is possible that other components will fail as well.

  1. Turn off the electricity to the hot tub. Make that all of the fittings and pipelines leading to the pump and the spa’s heater are in good working order. Check for leaks along the way as you follow each pipe to its corresponding jet nozzle. Put a drop of dark food coloring in the water in front of a jet and turn on the water.

Also, can you tell me why my spa drains at night? Draining during the night while the motor is not in use Replace the check valve and see if it helps. This device is intended to prevent backflow of water into the pipes, and it is frequently subjected to a great deal of wear and tear on spas that are elevated above the level of the pool. The check valve can frequently be found above ground, near the pool pump. What causes my swimming pool to lose water overnight? If your pool has lost water throughout the course of the night, check for leaks.

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Evaporation accounts for only a small portion of the total volume of water lost each day.

Pool Water Level – Pool Pump, Pool Care & Pool Maintenance

Not every pool owner understands the significance of keeping the water level in their pool. Your backyard sanctuary can literally be made or broken by the amount of water in your pool (in-ground or above-ground), spa, or other pool-related structure. In either case, the filter and motor may be destroyed, while a setting that is too high may result in inefficient operation. The correct water level for your skimmer is approximately halfway up the skimmer. Follow these instructions on how to raise or reduce the water level in your bathtub, as well as what might happen if the water level is too low or too high:

How to Lower Your Pool Water Level

It is possible that you may need to reduce the water level in your pool after a hard storm or if you forget to turn off your hose after filling the pool. If your pool pump includes a multiport valve or a drain, you may be able to reduce the water level by using the valve or the drain. If you don’t have a submersible pump, you can use an external one or siphon the water out using a hose.

Using the Pool Pump Multiport Valve

By moving the multiport valve to the “WASTE” position, you may use the waste outlet on your pool pump to drain the water. Also, check to see if there is another two-way valve on the waste line and that it is also open.

  1. Start with your pump turned off
  2. If your pump has a two-way valve, open it. Change the setting of the multiport valve to “WASTE.” Turn on the pump and let it run until the water level reaches your desired level. Turn the pump off if it is running. Reset the multiport valve to its “FILTER” position. If there is a two-way valve, make sure it is closed.

Using the Pump Drain

If you have a cartridge filter in your pool, you won’t need a multiport valve because you will be removing and cleaning the cartridge. If this is the case, you should seek for a drainage port. Drain the water from the spigot by attaching a hose to it and opening it until the appropriate level of water is reached.

Using a Submersible Pump

It is connected to the pool by means of a hose, and it lowers down to the bottom of the pool. Simply plug it in and the water will begin to drain to wherever you have the drainage system set up in your home or business.

Siphoning Water from the Pool

It is possible to siphon the water from a pool if you do not have a multiport valve, a drainage port, or a submersible pump, as long as you can establish the elevation difference and starting flow required to start the process. To construct a proper siphon, start by positioning the exit end of the hose at a lower elevation than the pool, then creating the initial suction required to get the water to start flowing again. Siphoning can be accomplished either by sucking on the hose if it is empty, or by filling the hose and sealing it with an appropriate nozzle until you are ready to begin siphoning.

Removing the nozzle to start the siphoning process when your hose is fully filled with water and has one end in your pool and the sealed nozzle where you want it is the next step.

How to Raise Your Pool Water Level

Using a garden hose, fill your pool halfway or three-quarters of the way up your skimmer, depending on how much water you want to add. If you require a significant amount of water to be added, you should call your local water utility provider. Occasionally, they will give a discounted pricing for filling a swimming pool. When living in a region where public water is extremely expensive, you may want to consider hiring a water delivery service to have the water trucked in from a nearby location.

What happens if your swimming pool water level is too low?

It is possible for the skimmer to bottom out and draw air into the filtration system if the water level in the swimming pool is too low. It’s possible that the motor on your pool pump will burn out if this happens to you. This might turn out to be a very expensive problem, which is why you should always keep a check on the water level in your pool. You should consider installing an automated swimming pool water leveling equipment if you are particularly worried about the level of the water in your pool.

They detect when your pool’s water level drops to dangerously low levels and automatically refill your pool until the water level returns to the “safe” zone.

Don’t forget the spa!

Whether you have a pool or a spa, the water level is important. If the water level in your spa falls below a certain level, you run the danger of harming the engine and the piping system.

What happens if your swimming pool water level is too high?

If the water level in your pool is too high, your skimmer will not operate as efficiently. When compared to the consequences of having too little water in your pool, this is a relatively minor issue. However, it can result in extra maintenance work for you (after all, someone has to pick up the pieces if your skimmer basket isn’t collecting debris). If the water level in the pool is a bit higher than normal, pool owners are unlikely to have to do anything. Additionally, tasks such as vacuuming and backwashing can assist reduce the amount of water that accumulates in a container.

Stormy weather ahead? Here’s how to prepare.

Are you preparing for a severe downpour or a tropical storm? Please do not empty the pool. Pools were created to contain water, and you want to be sure that your pool is structurally stable during a storm or hurricane. If you run out of water, you can always siphon it out. Focus on making the environment surrounding your pool as safe as possible instead than worrying about the water level: Heavy things (such as patio furniture) should be moved indoors, electrical equipment should be turned off, and your pool should be treated with a shock treatment to protect the water from pollution.

Maintaining the proper water levels in your swimming pool

The water level in your pool might change on an almost regular basis. Everything from evaporation and severe rains to the operation of your pool pump may have an impact on the water level in your pool. When it comes to keeping your swimming pool water at the right level, it’s important to check the water level every day to verify that the water level seems to be normal.

It’s also important to remember that typical maintenance operations such as vacuuming and backwashing your pool might cause your water levels to drop, so be sure to replenish them as needed.

Why Is My Hot Tub Leaking? Find and Repair Leaks

A leak in a hot tub is one of the most frustrating things an owner can experience, and most hot tub owners would agree that finding a leak in their spa can make a good day much worse (or when yourhot tub is full of foam). Because these leaks are exceedingly difficult to locate, you may find yourself spending the entire afternoon trying to locate one, giving you even more reason to scream, “Why?!?” at the top of your lungs. Today, we’re going to make sure you’re aware of the most common reasons of a hot tub leak, as well as what you can do to minimize the likelihood of experiencing one.

Spa purchases may be complicated, and you’ll want to be sure you’re insured in the event of a catastrophic leak.

How to Detect a Hot Tub Leak

One frequent method for identifying the source of a leak is to paint the water with dye or food coloring to identify the source. The location of the leak should be determined by the position of the black water that appears initially. Another alternative is to let the water level to decrease (without turning on the spa) and then pay close attention to where the water level drops and keep it at that level as long as possible. This will assist you in determining the degree of the leak and determining where to begin your investigation.

For those who are less solid, it may not be as straightforward as it appears.

How to Fix A Hot Tub Leak

A hot tub leak can occur for a variety of causes and in a variety of locations. If you haven’t been able to figure out what the problem is yet, it’s probable that it is one of the following:

Most Common Reasons for a Leaking Hot Tub and How to Fix Them

The Circulation Pump: The circulation pump is one of the most typical sites where a hot tub leak can occur. Make careful to switch off the electricity before inspecting this place, and examine underneath the pump for any signs of water leakage. Pumps that leak are often caused by one of three things: the shaft seal, the unions, or the volute:

  • The shaft seal may have failed, and you may be able to obtain a replacement seal without having to replace the complete pump. Union Fitting: A union fitting is a three-part connection that is found at the entrance and exit of the pipe. It might just require tightening (do not use a wrench for this! ), the o-ring could require adjustment, or you could require a new one. If your problem is with the volute, which is where the impeller is located, you will very certainly need to replace it.

However, despite all of this, it is conceivable that your pump may need to be completely replaced. The Heater: If there were no symptoms of leaking from the pump, the heater might be a possible source of concern. The heater itself, the pressure switch, and other components are all contained within the heater, and any of these components might be the source of the problem. You may be able to replace a single component of the heater; however, it is more probable that you will need to replace the complete heater or get it repaired.

  • Having valves put on one side of the pump prevents water from having to be cut off or emptied when the pump has to be fixed.
  • Make sure to check all of the valves on your hot tub and replace any that are damaged or broken.
  • Some connections are straightforward and merely require tightening or sealing, whilst others may necessitate a complete replacement.
  • Have you noticed a fracture in your PVC pipe?
  • Shell for the Spa: The majority of the shells are constructed of durable fiberglass that is sandwiched between other layers, so you would believe that a leak would never occur.

In many circumstances, it is not the shell itself that is the source of the problem, but rather a jet or other component linked to it. If there is a leak in the spa shell, Plast-Aid can be used to patch any holes or cracks that have developed.

Hot Tub Inspection and Repair with Hot Springs

We at Hot Springs PoolsSpas are here to help you with any spa leak problem you may be experiencing. If you require assistance in finding or repairing a leak, please contact our service department at our SC site at (864) 676-9400 or our NC location at (828) 687-8080. Our courteous technicians are well-versed in the maintenance and repair of all sorts of hot tub and spa systems, and they are available to assist with both residential and commercial difficulties. We look forward to being of assistance to you!

How to Find a Hot Tub Leak

A hot tub contains several apertures through which water might seep. Over time, it is possible that each of the tub’s jets will develop a leak. It is also possible that the plumbing behind the spa’s shell will leak. When attempting to identify the source of water loss in your hot tub, be meticulous in your inspection of each component before going on to the next. You should keep in mind that you may have more than one leak, especially if the issue is with the jets. As one component fails, it is possible that other components will fail as well.


  • Turn off the electricity to the hot tub. Open the equipment compartment and have a look inside. Pump inspection should be carried out with a flashlight. Check the pump for moisture and wetness with your fingers. If the pump’s seals are failing, it may be more cost-effective to replace the complete pump rather than just the seals.


  • Make that all of the fittings and pipelines leading to the pump and the spa’s heater are in good working order. Also, make sure the pressure switch is working properly. Check for dampness at each joint with your fingers. Even brand new spas are susceptible to leaking because the fittings may become dislodged after shipment. Hand-tighten loose fittings to prevent leaks from forming.


  • Check for leaks along the way as you follow each pipe to its corresponding jet nozzle.


  • In the water in front of a jet, sprinkle a drop of dark food coloring to make it look more vibrant. Keep an eye out for where the food coloring ends up since water takes the path of least resistance. If it comes out in a jet, you may have discovered the source of the leak. Look for colored water leaking out of the spa’s shell on the exterior of the shell. Repeat the process for all of the remaining jets.


  • Allowing the water to settle will allow you to see how far it descends. If it comes to a halt at a jet, you have discovered the leak.


Make a mark on the inside of the spa using a grease pencil or a crayon to indicate the water level. Turn on the spa and let it running for a full 24 hours. Turn the water off and make a note of the new water level. Fill the hot tub with enough water to reach the water level indicated on the water level gauge. Allow the pool to be in the “off” position for 24 consecutive hours. When the spa is turned off, make a note of how much the water level drops. It indicates that there is a break in the spa’s shell if the water drops equally while the spa is running and when it is not.

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When the pump is turned off, there is a greater loss, indicating that the leak is in the water line before the pump.

Things You Will Need

  • Lighting, dark food coloring, a grease pencil or crayon, and a magnifying glass


  1. It may be necessary to remove urethane foam insulation from around the pipes in order to expose them. It is not unusual for mice and other tiny creatures to build their nests in the insulation during the winter. There are products available that you may throw into the water to seal tiny leaks
  2. However, this is not recommended.

Spa loses water when not running

Thank you for taking the time to respond. As a result, I want some extra clarifications because I did not comprehend all of the language. Yesterday, I left the pool running for 24 hours with the spa return jets turned off and the spa fountain half turned on; the pool decreased 1/2 inch as a result of this. Could you please tell me the name of the spa venturi air line that you use? When the leak detection firm pressure tested the spa return jets, they also pressure tested the three holes located at the bottom of the spa as well.

  1. Is the third line the air line for the spa venturi?
  2. Does this mean that the spa light is located in the light niche?
  3. Once it started to descend, it did so extremely slowly for many days until the leak detecting company arrived.
  4. What is the location of the main drain sump?
  5. My first leak detection business informed me that they had tested it.
  6. They informed me that I had a main drain leak and blocked the maindrain to stop the flow.
  7. The Jandy valve, which regulates the main drain at the equipment pad, is equipped with O rings.

For the Jandy valves that regulate the skimmers and the main drain, I replaced all of the O rings with new ones. Around a return fitting, in a light niche, or in the main drain sump are all good places to start.

Hot Tub Troubleshooting: 6 Common Issues and Solutions

Relax in your boiling, steaming hot tub as the stress of the day begins to fade away. When you remove the lid from your hot tub, you’ll discover that the water is ice cold. Alternatively, you may find that your water is good, but that when you turn on your jets, nothing happens. Alternatively, it’s possible that the breaker trips when you turn on your hot tub. Alternatively, your pump may begin to operate and emit an ear-splitting shriek. Whatever the issue is, your evening is not turning out the way you had anticipated it would.

A number of common hot tub problems have straightforward fixes that you can solve on your own.

There is help on the way!

Locate the issues and then resolve them with relative simplicity.

Tired of trying to keep your hot tub clean all the time and dealing with chemicals?

Thanks to this simple-to-follow digital ebook and video training, you’ll be able to save $100 immediately. This is the ultimate hot tub maintenance handbook that you will not receive from the manufacturer of your hot tub. More information may be found by clicking here.

1. My Hot Tub Won’t Heat Up

You may encounter the most aggravating situation when you want to soak in your spa but the water is too chilly. A hot tub that does not have hot water is simply that: a tub. Reduce the number of probable causes by first assessing whether your water is remaining cold or becoming heated, and then chilling down the water. Before you do anything, make sure you have your multimeter with you. It might assist you in identifying the source of the problem fast by testing the electrical components.

Ice Cold Hot Tub Water

You’re not going to get any heat, no matter what. First and foremost, check your water level. After that, check for obstructions in your circulation system and wash or replace your filter as necessary. While they may seem like trite remedies, they are also the most expedient and least expensive, so always start with them first before moving on. After that, either turn off and on your heater’s breaker or just press the heater’s reset button. If the high limit switch on your heater shut it down because your water became too hot or because there was air trapped in your lines, resetting the heater will get it up and running once again.

Fortunately, repairing an air lock is a rather simple process.

It’s possible that you have a faulty heating element.

If it has to be replaced, you’ll want to contact a professional unless you’re confident in your ability to complete this sort of work yourself.

My Water Gets Hot, Cold, Hot Again

If the temperature of your hot tub is all over the place, you may be experiencing water flow issues. Start by cleaning your filter and checking for clogs in the circulation system, then topping off your water if required. Check to see if your pump is operational. The pump in your spa must be functioning in order for it to heat up properly. If the pump is not functioning properly, it may be necessary to replace it. It’s possible that the fault is with the heater itself. If the pump is operating properly and the heater is turned on, but the water still does not maintain a consistent temperature, you may need to have the heater replaced.

In the next step, double-check your thermostat and heat sensors.

You may notice that your heater is not working correctly if they are fried.

Bringing in a professional is necessary if you’ve tried everything and are still unable to identify and cure the problem on your own.

2. My Jets Aren’t Working

A bath would be the best option if you wanted to laze around in warm, still water all day. Using the jets in a hot tub is one of the most enjoyable aspects of bathing in one. Do not be concerned, though, if nothing is emanating from your jet engines. Start with the simplest and least expensive solution: open each of your jets individually to ensure that they are all fully operational. Examine them for dirt such as calcium buildup and clean them if required as well as possible. Fill the tank with water, clean the filter, and inspect the plumbing lines for obstructions.

  • If this is the case, you may be suffering from airlock.
  • To avoid this, you may loosen the top fitting on your pump just enough to hear air escape and see a small amount of water, then tighten it back down.
  • When you plunge, the power of the impact may cause harm to your circulatory system.
  • Then you’ll be on the hook for a substantial sum of money in repairs.
  • Don’t allow your hot tub become clogged with crud that is difficult to clean.
  • Removes muck from your pipes produced by lotions, sunscreens, cosmetics, and other similar products.

Kills microorganisms within the pipes for the most effective results. Swim University is now accepting orders. If you purchase something after clicking on this link, we will receive a commission at no additional cost to you.

3. My Control Panel Shows an Error Code

Despite the fact that they signal that something is wrong, error codes can be difficult to understand—and they do not always identify the source of the problem. There will be numerous error codes in your handbook, but there are five that appear the most frequently.


As you might have imagined, this code shows when there is a problem with the flow of water in your hot tub. It is possible that you will encounter this signal if your jets are acting strangely. Check for obstructions and clean or replace your filter if necessary. If it doesn’t work, check to verify if the power to your circulation pump is being delivered to the pump. If it does, and it is still not operating, it is possible that the circulation pump has to be replaced. It’s possible that this signal indicates that your pressure switch needs to be changed.

You may be able to resolve these issues on your own if you are familiar with working with electrical components, which is very important.

We place a higher priority on your safety than a fast soak in the hot tub.


When this error code appears, you should refrain from using your hot tub. It indicates that the water is very hot and may possibly scorch you if you are not careful. Even though there are several potential explanations, you can rule out a few basic ones. Maintain the cleanliness of your circulation system and filter. If your hot tub is located outside and you’ve been experiencing hot weather, make sure the spa cabinet is kept cold to avoid overheating the motor and damaging it. You should also check to see that your pump is not running for excessively lengthy periods of time.

Even if the water isn’t boiling, if you get this code on your display, it’s best to call a professional to figure out what’s going on.


As a result, if there is insufficient water flowing through your heater when it is turned on, it might result in what is known as a dry fire, in which the heating element is severely damaged. This is a regular occurrence when the water level in your tank is too low. It’s possible that topping out your hot tub is the only remedy available. Keep in mind to utilize a hose filter to keep contaminants out of your spa and plumbing system as well. Before you resume your circulation system, check to see that it is clean of debris.

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This error number appears when the water temperature in your hot tub decreases by 20 to 40 degrees Fahrenheit below your set setting. First and foremost, close your hot tub cover and let the heater to perform its work for approximately 24 hours.

If your water is still chilly after that period, try some of the options for when your hot tub won’t heat up, such as resetting the heater and checking your sensors and thermostat, to see if it helps.


A sensor code is an acronym for sensor, and the letter (or occasionally a number) after the code indicates which sensor is out of balance or malfunctioning. Alternatively, it might arise when a connection between your sensor and circuit board is not properly connected, or when your circuit board has been fried. The sensor may need to be replaced in this situation. If you’re unsure about dealing with electronics, consult with a professional. Several different codes can be shown on your hot tub’s control panel.

4. My Hot Tub Pump is Noisy

It’s possible that you’ll be close when your hot tub starts up and hear one of two unique sounds: a growling, grumbling noise or a high-pitched shriek.

My Hot Tub Pump is Growling

When you hear what sounds like bear cubs battling within your spa cabinet, it’s likely that your pump is running low on water. Remove any obstructions that may have formed in your circulatory system. Fill up your water bottle. Check to see if any valves in close proximity to your pump are open.

My Hot Tub Pump is Squealing

This loud, metallic whine is a definite indicator that your bearings are out of alignment. You are free to continue operating your pump in a safe manner, but the noise will only become worse with time. Try lubricating the bearings first, but you’ll most likely have to replace the circulation pump sooner rather than later. Alternatively, try utilizing your hot tub while wearing earplugs.

5. My GFCI Breaker is Tripping

The time spent troubleshooting your hot tub may be far more than the time spent bathing if your hot tub trips the breaker frequently. A breaker trip is frequent and typically simple to repair, but any troubleshooting and repairs will include the use of power on your part. If you’re going to be doing the job yourself, remember to switch off the breaker before you begin and to avoid handling anything that’s moist or contaminated. Important: In the event that you’re unsure of what you’re doing or don’t know how to operate with electrical systems in a safe manner, it’s best to call a professional for assistance.

  1. Then, without anything plugged in, switch on the circuit breaker.
  2. If it doesn’t trip, plug each thing back in one at a time until the problem is resolved.
  3. If your GFCI trips as a result of the component you recently reconnected (or the wiring to that item), the problem is with that component.
  4. It’s most likely one of four frequent reasons, which are listed below.


First and first, safety must be prioritized. If there is any water in the area around the breaker box, you should check it before you begin disconnecting anything. Determine the source of any moisture found on or around your circuit breakers. Identifying and repairing the source of the moisture may be all that is required to keep your circuit breakers from tripping. After all, the objective of a ground fault circuit interrupter (GFCI) is to protect you from electric shock while you are near water.

It is possible to prevent moisture from accumulating in your hot tub by relocating your breaker box further away from the spa or installing a barrier between the hot tub and the breaker box.


Wires and connections in all of your electrical components are susceptible to corrosion. Make use of a decent flashlight to thoroughly investigate all of these locations. Corrosion will need you to replace the damaged part(s) or engage a professional to do it for you if it is discovered.

Damaged or Loose Wiring

During your search for corrosion, make sure that all of the electrical connections are in good working order. Give the cables to agentletug so that he may inspect their connections. Other symptoms of damage, such as melted or burned wires, should also be kept an eye out for. Again, unless you have extensive familiarity with electrical wiring, you should seek the assistance of a spa professional or an electrician to address these issues.

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Heating Element Malfunction

However carefully you care for your hot tub, you will ultimately have to replace the heating element. The component in question simply has a limited lifetime. Your breaker may trip for a variety of reasons, one of which is the most prevalent. Take the electrical connections from your heater by loosening the bolts on the top of the heater to see whether this is the source of the GFCI breaker tripping. Check to see whether the breaker trips a second time by flipping it. If the heating element does not trip, you will need to replace it.

You’ll still need to replace it regardless of whether it’s burned out or has a shorted connection.

6. My Hot Tub Has Weak or Low Water Flow

Aside from the fact that your hot tub isn’t heated, having weak or low water flow is a major inconvenience. If the water in your bathtub isn’t moving, you might as well be sitting in it, don’t you? Fortunately, there are only a few possible reasons, so you should be able to pinpoint the issue very fast.

Dirty or Damaged Filter

A clogged or worn-out filter might prohibit water from flowing as freely as it would otherwise. Examine the filter for signs of wear. If everything appears to be in order, give it a thorough cleaning. If it is beginning to exhibit symptoms of wear and tear, it may be necessary to replace it totally.

Low Water Level

If the water level is too low, the water cannot flow. Check the water level to make sure it’s at the proper level for the situation. Whether it isn’t, fill the container with water and do a test to check if the flow returns to normal.

Malfunctioning Pump

Is the hot tub pump operating properly? If this is the case, the fault lies elsewhere. If this is not the case, use a multimeter to determine whether or not the pump is getting power. If it is, but the pump continues to malfunction, it is likely that it has to be fixed or replaced. This might indicate that you have a more serious electrical problem on your hands. Please keep in mind that electricity and water are incompatible. Everyone is not an electrician, and that is perfectly acceptable. If you are not comfortable working on these systems, you should get expert assistance.

Air Lock

It’s possible that you’ll have a hot tub air lock when you replace the water or when you first turn on your spa for the season. This indicates that air has gotten into the plumbing pipes and is interfering with the water’s ability to flow as freely as it should. Bleeding the air out of the system will solve the problem of a locked door. Look for little bleed screws at the end of the pump and open them all at the same time to let the air out of the system. Some systems may also have a screw that is located on top of the pump.

It may be necessary to bleed the system more than once in order to remove all of the air that has become trapped in your hot tub’s system.

Make certain that the system is turned off while you are bleeding air out. Important: Also, be sure to close bleed screws as fast as possible to avoid water flying out once the air has been let out.

Blocked or Broken Jets

You may observe that some jets are producing strong flow, while others are barely keeping up with the rest of the aircraft. In this situation, look for worn-out jet seals, and then inspect all nozzles for any debris that might be obstructing the flow of water from entering the system. Examine your gate valves for damage if the problem is occuring in all of the jets, and double-check your water level to make sure it isn’t too low. If you have a broken propeller, check the wet end of your pump to see if anything is preventing the flow of water or if something is impeding the flow of water.

Blocked or Worn Out Ozonator

If you’re using an ozonator, take a close look at the valves and consider bypassing it for testing reasons as well. There are several instances in which the valves connecting the ozonator to your hot tub might begin to wear out or can become clogged with debris. Check to see whether the water flow returns to normal after cleaning or replacing the filters. If this is the case, you may need to have the ozonator replaced.

Prevention is Key

Your hot tub and its components will inevitably succumb to the effects of time, wear, and tear. You will need to replace components on occasion, and this will be due to no fault of your own. However, by taking regular care of your spa, you may avoid some of the most prevalent issues.

  • Create and adhere to a hot tub maintenance routine, which should include frequent water chemistry testing and balancing. Low water levels should be replenished immediately upon discovery in order to avoid error codes, sputtering jets, and even dry fire. Investigate potential problems before they become a source of frustration by periodically opening your cabinet and inspecting it for signs of wire damage or leakage.

Keep in mind that if you’re getting ready to utilize your hot tub and something goes wrong, you should first look for common-sense remedies. Simply adding some water and cleaning your filter will help to resolve many of the issues that arise in your hot tub’s operation. If your hot tub troubleshooting leads you into a situation where you are unable to complete the repairs on your own, don’t be scared to contact a professional. Correctly diagnosing and repairing an issue the first time may save you a lot of time and aggravation—not to mention money.

  • Founded in 1995, Swim University® has been in the pool and spa sector ever since.
  • Since then, he has made it his aim to make pool and hot tub maintenance as simple as possible for everyone.
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In the same way that a leaking hot tub is a severe concern, a pool that is inexplicably losing water may be a serious one as well. We hope that we can assist you in troubleshooting your water loss problems and identifying the cause of the problem so that it may be fixed as soon and effectively as possible for you. Pools may be a precious resource, and they aren’t always a source of waste.

If your pool is losing water, all of that can be thrown out the window. Please keep in mind that if you do find a leak, you should NOT instantly empty your pool. It is critical that the container has water in it in order to determine the source of the water leakage.

How often should I have to add water to my pool under normal conditions?

Pool water will be lost through a variety of regular processes, including splash-out during usage, backwash waste, and evaporation. You should be aware of these losses. Depending on where you live and the environment, you may be able to recover some of the water through rainfall. When adding more than two inches of water to your pool each week, however, there is a good likelihood that you have a severe leak somewhere in your pool system. Rather than just replenishing the water tank on a regular basis and disregarding the loss, invest some time and money to correct the leak as soon as you realize it is occurring.

Why do pools leak?

Pools are created in such a manner that they are completely impermeable, and even though they appear to be simple structures, there are several components and pieces that go into maintaining them that way. Seals weaken with time, pools may move as a result of shifting earth, and the ground into which the pool was excavated may settle. Pools frequently leak via plumbing fittings, accessories such as light fixtures, and even through the shell or liner of the swimming pool. It is vital to locate and repair leaks in order to save money on items such as water, heat, and chemicals, as well as to prevent the eroding pool structure from accumulating water and washing away dirt from the bottom of the pool.

How do I find out if I have a leak?

Leak detection is a difficult and time-consuming process that takes a long period. In rare circumstances, a specialist may be required to find the problem as well as to remedy it. But you may be confident that the majority of pool leaks are caused by something small and can be repaired for a reasonable price. Using some of these frequent scenarios to troubleshoot your pool, you may be able to save money by either identifying and halting the leak or by being able to inform your local pool specialist precisely where the problem is.

  1. This will allow you to observe how much water your pool is losing.
  2. Both the bucket’s water line and the pool’s water line should be marked.
  3. It is quite likely that you have a leak if you observe that the pool has lost more buckets than your control group (the bucket).
  4. It is possible to avoid evaporation by using a sun cover or liquid solarcover.

Here are some other things to check before calling a service person for repairs:

Is the pool leaking when the machinery is running or only when the equipment is switched off and on? This is an excellent place to begin. Unless you have a pressure-side return leak, you should switch off all of your pool equipment, such as the pumps and filters, if you see that you are still leaking water. Because of the operation of the filter pump, the plumbing on the pressure side is put under pressure. Initially modest drops can quickly evolve into large amounts of spray, which can cause your pool to lose water more quickly than you would expect.

  • If your pool is leaking even while none of your equipment is operating, you may have a suction-side leak.
  • Air is frequently sucked into the pool through leaky voids, preventing the pool from leaking.
  • Air bubbling OUT of return pipes or air piling up in the filter tank are further signs that something is wrong.
  • What should I do if my pool is always leaking?
  • Put a little amount of pH indicator test reagent near the crack when the pump is turned off and the water is quiet.
  • If the dye is drawn inside the fracture, you’ve discovered the source of the leak.
  • If this happens, you may fix it by putting putty or another caulking agent in the aperture of the conduit at the rear of the socket that is appropriate for the pool building material you are using.

When there is a divide between the plastic skimmer and the pool, the most typical source of leaks is this (most often in concrete shells). This may be remedied with a little amount of pool putty or Mr. Stick Underwater Glue, as needed.

My water leaks to a certain level and then stops. What’s going on?

If you are losing water and then notice that the flow appears to level out at some point, this might help you establish where the leak is coming from. Consider the following scenario: if you close the skimmer valve and the water descends below the skimmer and continues to flow, the problem is most likely not the skimmer. Water that drops below the level of an underwater light and then stops leaking is a strong indicator of where the water is escaping. In order to determine if your water has stabilized at a specific point, do the dye test in regions around that level.

A suction line leak, most usually immediately under the skimmer, may cause your water level to drop to the bottom of the skimmer and come to a complete stop.

If this happens, call your pool service company immediately.

In the event that you have observed water seeping around the pool and producing puddles or moist soil—particularly between the pool and the equipment pad—you should have someone come out and fix the problem as soon as possible.

Consider checking the filter, pump, heater, and all of the valves to see if you can detect any spray or anomalous water accumulation.

Turn the pump on and off several times, paying attention to how the water spray varies with each adjustment.

Is the vinyl in your pool still in good condition?

It is significantly more vulnerable to rips and tears than your typical plaster or concrete pool, due to the thinness of the material.

Also search for sinkholes underwater that appear to be caused by a leak in the liner, where the fill sand beneath the liner appears to have been swept away.

It is possible to repair vinyl linings yourself using vinyl patches, but the entire lining should be replaced every ten to fifteen years or so.

How much does leak repair cost?

Because pool leaks can be difficult to locate and analyze, it is possible that a service technician will need to come out more than once to fix them. For a regular leak repair, I would estimate that the average cost is between $150 and $250 dollars. If you have a major problem that necessitates concrete cutting, the cost can certainly be substantially more. Just remember that it’s best to discover the problem as soon as possible and attempt to resolve it before it becomes out of hand and costs you a lot of money.

Never overlook a problem that has to be addressed! It is hoped that some of this troubleshooting can assist you in saving time and money by allowing you to identify and possibly even solve the problem yourself when you discover your pool is losing water.

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