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Archive for the ‘Spa Pumps’ Category

Hot Tub Pump Problems

April 25th, 2013 by



Spa and Hot Tub Pumps. They provide the circulation for the spa filter and heater and give an extra boost when turning the spa jets on high. And when the spa pump ain’t happy, ain’t nobody happy – that’s because without water flow, there is no filtration, no sanitation and no heating.

Spa pumps need to operate every day to maintain clean and hot spa water – so when your hot tub pump has problems, it’s an emergency. If your spa cover is kept on, you may have 1 day before it cools off, and perhaps only a few days before bacteria and pathogens begin to thrive.

Shock the spa with your favorite spa shock when the sanitizer level gets low. You can continue using granular spa shock, or a spa floater with tablets, for several weeks, but if you go without filtration longer than a few weeks, you should consider draining the spa after your pump troubles are fixed.

Some spas have two pumps, one is the circulation pump and the other is the jet pump. If you have two pumps, chances are it’s one or the other – either your jets don’t work, or the spa circulation isn’t working. Spas and hot tubs with one pump usually have a 2-speed motor, operating on low speed most of the time, and on high speed when using the tub with the jets.

Spa Repairs can be Dangerous! Be sure to disconnect power. ONLY qualifed personnel should attempt spa repairs. Accidents can be fatal.

Spa Pump Trouble F.A.Q.

Here’s a simple way to troubleshoot your spa or hot tub pump. Hot Tub Blogs should do this more often – These are our most Frequently Asked Questions about spa pump repair.

Q: My Spa Pump is Dead – No Noise, No Action!

A: When you hit the switch or button, and you don’t hear your spa pump come on, there are a few things simple things you can try.

First, are other equipment items powered, are the indicator lights on? If not, the Circuit Breaker may be tripped. Second, the GFCI breaker may have tripped. Look for a red “TEST” button on an electrical outlet near your spa equipment. If the GFCI was tripped, but the spa still won’t come on, check the system Fuse in the spa pack panel. If you replace the Fuse and it pops again, you have an short in the wiring equipment of your spa.

Third, check your time clock or remote spa controller, if you have one, to make sure it is not over riding the switch you are using. Fourth – is a faulty switch you are using to turn on the spa pump. Air switch buttons are often used on older spas, and you may have a problem with the switch or the hose. Modern air switches are electronic, and you can test the power coming in and out of them, to determine if the switch itself is faulty.

Q: My Spa Pump is Not Pumping!

A: If your spa pump is coming on, but not pumping any water here’s some steps to troubleshoot.

First, have you just refilled your spa? If so, there is probably and Air Lock in the hot tub. In some spa systems, when you completely drain the spa, air gets trapped in the pipes and equipment. You need to bleed the air out and replace it with water before the pump can catch

To bleed air our of your system, first look for a drain plug on the pump and filter. Place a small pan or cookie sheet underneath to catch any water. Slowly open the drain plugs until water begins to run out. If you don’t have drain plugs, you can slowly loosen the union on the pump (but don’t remove it, or the o-ring may pop out of place). Listen for escaping air, and then once the water begins to drip, you can tighten the union up again.

Second, if your tub is full, and still no water runs out, look for any closed valves before or after the pump. Third, is something blocking the lines? Look for something stuck in the skimmer or blocking the spa drain. Fourth, is the water level high enough? Low water will allow the skimmer to suck air, and cause the pump to lose prime. Fill spa to the middle of the skimmer opening.

Q: My Spa Pump Only Works on High Speed

A: First, rotate your timer clock and turn up thermostat to high to see if this resolves the problem.
Second, check the power at the low speed and high speed terminals, which should be either 110V or 220V, +/- 10%. Third, check the air switch button that you push to switch speeds. Check for voltage coming in an out of the switch, or for mechanical air switches, check that the device is not clogged with debris or insects, and that the air hose is in good shape and connected on both ends. Fourth, the mechanical switch in the back of the motor could be stuck in the high position, due to broken parts or insect infestation.

Q: My Spa Pump Only Works on Low Speed

A: When your 2-speed hot tub pump only works on low speed, and never kicks into high speed, there are four possible solutions to check.

First, if you are pushing an air switch button, check that the air hose is not crimped or disconnected. Newer, electronic air switches can be tested with a multi-meter, to see that power is passing through, on both sides of the switch. Second, If the pump was recently replaced or rewired, the wires could be reversed on the back of the motor.

Third, is the switch in the back of the motor, that changes to motor from low speed to high speed. With power off, manually operate the switch, looking for something loose, broken or misaligned. Insect or ant infestation could also prevent the switch from operating correctly. Fourth, is the contactor/relay that switches the pump speed. With power off, make sure that the connections are tight, and the terminals are not rusty or corroded.

Q: My Spa Pump is Humming, and Then the Breaker Trips

A: If your spa pump never actually turns on, it only makes a low noise, until the circuit breaker trips, check these things.



First, would be the capacitor on the motor. This cylindrical “battery” provides extra starting power, and these can go bad after many years. You can test the capacitor, or simply replace it with an identical size. Second, Check the shaft for rotation. If you have an open volute, where you can see the shaft, use straight pliers to manually turn the shaft, to rule out a locked up motor, or something stuck in the pump impeller. Third, Check that input voltage is correct, either 110V or 220V, +/- 10%. Fourth, it is possible that the breaker itself is in need of replacement.

Q: My Spa Pump is On, but Barely Pumping

A: First, check the spa filter, it may need cleaning. Second, look for any obstructions in the skimmer or over the drain cover. Third, something could be clogging up the pump impeller, especially if a spa cover is not used, and lots of small debris has entered the hot tub. Fourth, an air leak, before the pump can cause this issue. Check the union in front of the pump, and look for any water leaks when the pump shuts off.

Q: My Spa Pump is Making Loud Noises

A: There are a few types of funny noises that a hot tub pump can make – none of them good.

First, if the noise is a screeching, high pitched whine, the motor bearings could be failing. Bearings can be replaced, or if the motor is very old (more than 5 years old), you may consider replacing the hot tub motor. Second, if the noise is a low pitched, grumbling noise, the pump could be starved for water. Check that the valve in front of the pump are open, and that nothing is clogged in the suction lines, including the spa filter. Third, a rattling noise – could be vibration that can be solved with a rubber pad beneath the pump. If something is broken inside the motor, it doesn’t take long (at 3400 rpm) for broken spa pump parts to be worn down to nothing. In this case, the noise would not last more than a few minutes.

Q: My Spa Pump is Leaking Water

Leaking Spa Pumps

A: First, and most probable, is that the shaft seal of the pump has failed. This is located behind the impeller, and would leak along the shaft, just behind the volute. Second, is the union on top of the pump. If water is dripping or spraying from where the union connects, the PVC threads may have shrunk (from running pump without water), or the threads may be loose and simply need to be tightened. Third, if either incoming or outgoing unions were loosened recently, the internal o-ring may have come out of place, and not be positioned properly. Fourth – is the o-ring that seals up the impeller housing, or volute. Dry-rotted, out of position, or possibly loose, along with loose screws around the face of the pump.


I hope that this FAQ of Hot Tub pump problems has been helpful to you. If your question was not answered here, feel free to post a comment below, or call our helpful spa tech support personnel at  800-770-0292.

Happy Hot Tubbin’

Daniel Lara
Hot Tub Works


Sundance Spa Pumps and Jacuzzi Pumps

June 3rd, 2011 by

Sundance Wet End



We are now offering a new line of wet-ends called the Piranha that have 8 mounting legs instead of the typical 4 leg style. This will allow you to clock the wet-end into 8 different positions including those 45 degree angles that Sundance and Jacuzzi brand spas used on their models for a number of years.

The wet end for this pump can be adjusted to all these positions, so you can more easily make a replacement to the volute of your spa pump. Reducing the number of 90′s is always a good idea for decreased resistance in your spa system.

Here’s the new offering of Sundance Spa Pumps


Complete Sundance Wet End for 4.0/ 2.0 Hp Pumps.
Contains: front and rear housing, 2.0 Hp impeller, o-ring, seal and screws.  For use on a 48 Frame Pump which Sundance used on 1998-2005.
Current Replacement Pump Wet End for these old part numbers: 6500-257, 6500-262, 6500-264, 6500-265, 6500-266, 6500-757, 6500-762, 6500-764, 6500-765, 6500-766, 6500-769, 6500-347, 6500-349.
Used on Sundance Spa Models: Altamar, Bahia, Calypso, Calypso II, Cameo, Certa, Chelsee, Hamilton, Hartford, Hawthorne, Majesta, Marin, Madison, Maxxus, Montego, Optima, Palermo, Telluride
Used on Jacuzzi Premium Spa Models: J-325, J-330, J-335, J-340, J-345, J-350, J-355, J-360, J-365, J-370, J-375, J-380, J-385


Complete Sundance Wet End for 4.2/ 2.5 Hp Pumps.
Contains: front and rear housing, 2.5 Hp impeller, o-ring, seal and screws.  For Use on a 48 Frame Pump which Sundance used on 1998-2005.
Current Replacement pump wet end for these old part numbers: 6500-254, 6500-257, 6500-260, 6500-261, 6500-262, 6500-263, 6500-264, 6500-265, 6500-268, 6500-754, 6500-757, 6500-760, 6500-761, 6500-762, 6500-764, 6500-765, 6500-768

Used on Sundance Spa Models from 1998-2005: Altamar, Austin, Bahia, Burlington, Calypso, Calypso I, Calypso II, Cameo, Camden, Capri, Caprio ST, Cayman, Certa, Corum, Cyprus, Hamilton, Hartford, Hawthorne, Madison, Marin, Majesta, Maxxus, Montego, Olympia, Optima, Palermo, Rio, Telluride.

Used on Jacuzzi Premium Spa Models: J-325, J-330, J-335, J-340, J-345, J-350, J-355, J-360, J-365, J-370, J-375, J-380, J-385


Complete Sundance Wet End for 1.5 Hp Pumps.
Contains: front and rear housing, 1.5 Hp impeller, o-ring, seal and screws. For use on a 48 Frame Pump which Sundance used on 1998-2005.
Current Replacement pump wet end for these old part numbers: 6500-122, 6500-135, 6500-259, 6500-258, 6500-293, 6500-759, 6500-758, 6500-793, 6500-345

6500-345, Sundance Spas Pump, 1.5 HP, 120 Volt 2 Speed. 1997-Present

Current Replacement for these old part numbers: 6500-122, 6500-135, 6500-259, 6500-258, 6500-293, 6500-758, 6500-759, 6500-793.
Used on Sundance Spa Models: Aspen, Bali, Cheyenne, Denali, Dover, Metro, Solo, Suntub, Tango, Tacoma, Vail

6500-341 & 6500-355, Sundance Spas, Jacuzzi Spas Pump. 2.5/4.2 HP Rated, 240 Volt, Replacement Pump for 1997-Present Sundance Spas and Jacuzzi Premium Spas.

Used to Replace: old part numbers: 6500-126, 6500-128, 6500-131, 6500-254, 6500-261, 6500-263, 6500-266, 6500-269, 6500-754, 6500-763, 6500-766, 6500-769
Used on SUndance Spa Models 1997-2011: Altamar, Bahia, Calypso, Calypso II, Cameo, Certa, Chelsee, Hamilton, Hartford, Hawthorne, Majesta, Marin, Madison, Maxxus, Montego, Optima, Palermo, Telluride
Used on Jacuzzi Premium Spa Models: J-325, J-330, J-335, J-340, J-345, J-350, J-355, J-360, J-365, J-370, J-375, J-380, J-385

Winterizing a Spa or Hot Tub

March 25th, 2011 by

How to winterize your spa or hot tub

Blow Out the Spa Pipes

If you plan on draining your spa or hot tub for the winter, be sure to use a wet / dry vac to suck out any residual water in the plumbing lines and equipment.

Water will expand about 9 times it size when it freezes and will easily crack plumbing fittings, manifolds, and spa pump wet-ends.

To remove water from spa or hot tub pipes, place the vacuum nozzle over the jets, suction fittings, filter plumbing, and equipment to quickly remove the access water and prevent a huge repair when Spring comes around. You can make special hose attachments by using various fittings, and duct tape, to make the best seal against skimmers, spa jets and pumps.

You can also use the wet dry vac as a blower, to blow out the spa pipes. Connect to your skimmer pipe to blow air through the spa pack. Turn on your spa blower while you are blowing out the hot tub pipes. Move the vac or blower, around to different parts of the spa, to try to get air into every possible area.

This is also important to prevent standing water from growing bacteria inside of the pipes. Keep blowing air through all of the spa jets, until all of the moisture has been blown out of the pipes and equipment.

For this reason, it is also recommended to use a Spa Purge product before draining the spa, to clear the pipes and equipment of biofilm bacteria. We have two excellent hot tub pipe cleaners – Rendezvous Spa Rinse or Leisure Time Jet Clean.

To complete your hot tub winterization, remove any drain plugs on the pump and filter and open the drain valve all the way. Get the last little bit of water out with a sponge and bucket.

Shut off the power to the spa, so the pumps don’t accidentally turn on while the hot tub is winterized.

Secure your spa cover for winter with Wind Straps if you have high winds. Use the Cover Cap, to protect hot tub covers from weather all winter long.

~ brian

Identify Your Spa Part or Hot Tub Part

March 24th, 2011 by

spa pumps and motors


One of the hardest things about selling spa parts for the spa industry is that there are 1,000s upon 1,000s of spa parts from all kinds of different manufacturers. Because of this, it has been very difficult to have all of those parts listed on our site.

In most circumstances, however, we can get you the spa part you need, even when you can’t find it on our website, or even on any website.For example. most Hot Springs, Sundance, Jacuzzi, and Balboa parts aren’t listed on our site but we have extensive catalogs and databases we can use to locate these parts for you.

Another place on our site that doesn’t always have every part listed is the Spa Jet section. Most jets come in a variety of colors and textures. Because of that we don’t have the ability to have all of these jets on our site but if you happen to be in this section and find a jet that looks similar to yours but perhaps isn’t the right color don’t hesitate to call in or send us an email. Most likely we will have the jet that you need available.

We can even obtain parts officially de-listed as Obsolete, when stock still exists in distribution. Many times, a comparable part used and made by a different manufacturer may work for older, de-listed and obsolete spa parts.

And then there are just those hot tub parts that are from smaller manufacturers, from very old spas or maybe you just don’t know where to look. The best thing to do in those situations is to email us a picture along with the measurements and any numbers that happen to be listed on the part. From there our experienced technicians and staff should be able to match the part for you.

So again – if you’re looking for a hot tub part, no matter how rare, or difficult it is to find – we are here to help you find the correct spa parts – fast!


To All of You out There Thank You! If I Were There, I’d Hug Ya!

March 3rd, 2011 by

big-hug for our customers

I have been a customer service representative at Hot Tub Works for almost 5 years and I love what I do. However a good portion of the job is helping customers who have had a less than ideal situation (example: a damaged package delivered) and may be upset when calling in.

It is a wonderful feeling to offer a solution and bring the old fashioned “over the top” customer service into reality and turn a potentially bad experience into a good one for our customers.

Our honest desire to make your experience with Hot Tub Works enjoyable from beginning to end usually surprises people and I absolutely love it when they call in or email us about their experience in genuine “over the top” customer service.

To all of you out there thank you! If I were there, I’d hug ya!


Spa Pump Crazy

September 20th, 2010 by

spa-pumpsCrazy about Spa Pumps!

Five years ago we added spa pumps to the site.  It’s been one of those journeys that has come very slowly, not a silver bullet anywhere to be found. We started with the best brands available, which was not an easy path, as many of the suppliers have been buying each other out.

When we started to stock spa pumps, we realized we need to test every one because it was apparent our suppliers did not, so we built a water test station, to make 100% sure we had great product before the client ever received their spa pump.

We hired a friend and former colleague from the Sundance Spas engineering department to build our work stations and create the testing protocol. It was one of those projects that seemed not to make any sense on paper, yet I knew we had to invest in, to be the best source online for spa pumps.

Sales have always been good, yet it’s taken a lot of energy with very little profit, since spa pumps are heavy to ship and the warranty costs seem to never get covered by the manufacturer. We have always been liberal with our return policy as if we were the buyers ourselves. The spa pumps just always seemed to be needing more work. So, one more time, a couple of All-Stars here jumped in and got deep into the project.

Jim and Brian spent months researching, studying everything they could to figure out what we needed for our clients, how to source correctly, the engineering of spa pumps. They went further, studying how to create the best value for our clients, and how to make it easy to find the right spa pump on our website.  These two, as always did us proud and our clients right by creating the most complete offering of spa pumps at the best prices, and a method so clients can get through the challenge of finding what they need.

They even made spa pump videos.

My hat is off to these guys who come to work everyday and care about what they do for us and for you. It’s an inspiring group.

- Jerry