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Posted on Feb 15, 2013
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Replacing hot tub flow switch

How do I replace a flow switch on a Sunsational spa?

1 Answer

US Parts Center

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  • Master 719 Answers
  • Posted on Feb 15, 2013
US Parts Center
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Joined: Aug 19, 2009
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Depending on what type of flow switch is in the plumbing will determine how it is changed out.
These are usually glued into the plumbing line with no unions or gate valve on either side of it,
If this is the case for you tub then you will need to drain the tub or isolate it from the water so you can plumb in a new flow switch.


Rod
US Parts Center
888-521-6183

4 Related Answers

Anonymous

  • 61 Answers
  • Posted on Apr 05, 2009

SOURCE: Spa tub motor need replacing

I havent seen to many motors this old, but today all you really need to know is the horsepower and the frame (either round or square). Pull the old one off and take it to a pool store, and they can probably get it for you.

Also..im not sure but i think A.O. Smith bought out magnetek some years back....

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Anonymous

  • 990 Answers
  • Posted on Oct 31, 2009

SOURCE: Motor is hooked up correctly according to

You have 220v running into your motor, the red and the plack are in most cases the same 110v line and what your calling a white netural is a common line. In other words the second half of your 220v line. If your red and black are the two opposing 110v lines that make up your 220v and they are put on the motor and turned on they short aginst each other and blow the breaker. One of your 220v lines should come into your hi -low switch and then split to your high and low on the pump. The other half of your 220v line will go to the common or what your calling nuteral. The difference is a netural completes a 110v circut and a common completes the 220v circut it will take to run the motor. One of the splits will complete the low speed circut and the other will complete the high speed circut. You need to check your voltage comming into the spa, the way the spa is wired (110v-220v), and how the motor is wired (110v-220v). For your spa this will be in your owners manuel or on a scematic inside a panel or door and is quite often a plug you change from one spot to another. On your motor will have a scematic on the back of the motor that will tell you haw to adjust the wireing already in place on the wire board of the motor. This may sound deep but if all your voltages are set the same and your high and low are the same leg of power, this should fix your problem.

A Miller

  • 8404 Answers
  • Posted on May 30, 2010

SOURCE: the pump runs but the water is not flowing

Your impeller has spun the center out of it. Remove the pump and replace the impeller.

Anonymous

  • 1 Answer
  • Posted on Oct 16, 2012

SOURCE: SPA PUMP REPLACEMENT

There are only two ways you can avoid a Sunami. You either have to clamp the hoses or drain the Spa. I found out the hard way that I need to drain the Spa when changing the pump. The service guy, using the hose clamps, messed up my Jacuzzi room big time. The clamps just won't do it.

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Related Questions:

0helpful
2answers

Will a flow switch stop the tub of any operation

Is the board getting power, is the control lighting up?
Do you see any error codes on the top side control?
Improper flow will give you an error code, caused by flow issues or a faulty flow switch. Make sure all gate valves are open and the water can flow freely.
If not then check your Hi Limit sensor. This is the overheat safety sensor if it fails the tub will not function at all.
0helpful
1answer

Flo code is on and pump won't start up

Flo = Improper flow or pressure switch malfunction or Flow switch malfunction (system specific).

Before you purchase a new pressure switch:
- Clean or replace your filter cartridge (if its older than 1 yr).
- Check that all slice/gate valves are up/open.
- Check water lines for blockages incl. suction cover & ensure sufficient water level in spa.
0helpful
3answers

Spa thermal overheating

Turn off all power to the hot tub as soon as you realize it is overheating. The spa should have an automatic shut off when the water temperature reaches about 112 degrees fahrenheit. Call your hot tub dealer or manufacturer for service options. There are a variety of conditions that could lead to the overheating of your hot tub, but may differ in various hot tub models and brands. Check the water level of the hot tub. Low water levels could be the culprit for the over heating, so you may just need to add more water to the hot tub.
Check the shut-off valves in the hot tub. If they are closed while the hot tub heater is on, it could cause the water to reach unsafe temperatures.
Clean the hot tub filter. A dirty filter could be blocking the flow of water, causing the water to sit in the hot tub and overheat.
Turn the power back on after finding the problem and talking to the hot tub dealer. The hot tub will probably not start back up until the water reaches a safe temperature
1helpful
1answer

The hot tub is no longer heating

There are two main items to check. I do not recommend them unless you are qualified to work with electrical. The 2 main things that this could be are:
1. Pressure switch failure( (hot tubs need a sensor to tell the computer when it is safe to operate. If the pressure switch is out, then it will not heat) if this is a hot tub with a 24 hour circulation pump, then the pressure switch would actually be a flow switch.
Fix: Replace pressure switch/ flow switch
2. Heater element failure. (This type of failure typically trips a GFCI breaker)
if the heater element is out, then it will short to ground causing the hot tub to shut down repeatedly.

Notes: Are there any trouble codes coming up on the display panel? these help out greatly when troubleshooting like this via- messages
0helpful
1answer

I have a 2004 great lakes hot tub with a balboa controler. My hot tub heats up fine when the pump runs on high but the temp light never comes on when the pump runs in low.

check to see that the flow switch is working properly, it may not have enough flow on low speed to allow the heater to turn on. Make sure your filter/s is/are clean. If you have a pressure switch instead of a flow switch, it may need to be adjusted or replaced.
1helpful
2answers

I have a qca jewel plus spa and the diagnostic reads fl for a flow switch detection. what does this exactly mean and where can i find the bad part, plus how do i fix this

you should be able to locate the pressure switch near the pump, most likely on the discharge side. Before you replace the flow switch, make sure your filters are clean and there is not an air lock on the system. The flow switch is fairly easy to replace. You'll probably have to drain the spa unless you have blade valves to isolate the equipment. With the supply power off, you can remove the front panel on the spa pack and find where the flow switch is and disconnect it. You can then replace the flow switch. Make sure the new switch directional arrow is facing the right direction so it will read flow properly.
7helpful
1answer

How do you replace a flow switch in a spa, or hot tub

turn off the power to the spa. remove the cabinet under the topside remote to expose the equipment compartment. You should see the flow switch, it's usually a threaded 3/4" plug with a single grey wire coming out of it. Most of them are threaded into a tee or a special transparent fitting. If the water level in the spa is above the flow switch, you may have to drain the spa down unless you're very fast about getting the new switch in. Unthread the old switch and thread the new one in. Follow the wire on the old one to the spa pack. You'll have to remove the screws on the cover to expose the circuit board. Follow that wire into the spa pack to see where on the circuit board that it is plugged in. It may be good to run the new wire to have in place as soon as you unplug the old one you can install the new one with no question as to where it plugs in.

Reinstall the cover on the spa-pack and turn the main power back on. Make sure that the arrows on the new flow switch are facing the correct direction (direction of flow). Once you have the spa on and it starts back up, run everything to check for leaks and proper operation. If the flow switch was the only problem, all your faults should be cleared and you should be in good shape. If there are no leaks, you can reinstall the cabinet panel.

The new switch should already have teflon tape on the threads, if not, use teflon tape, apply the tape in the direction as if you were threading a nut onto the threads. You only need a few wraps of teflon tape, too much can crack the fitting you threat the new flow switch in to.
8helpful
2answers

We have a dreammaker spa, how do we drain it? the model is Fantasy

The Fantasy has a drain located in the toekick of the spa. You have to first remove the drain cap, attach a hose if you wish, spin the outer black ring counter clockwise to start the water flow, then pull the outer ring out away from the tub to increase the drain to full flow.
I understand that a screw driver is often needed to pull the outer ring out to achieve full flow. Therefore, I suggest another method. Take a garden hose and place it in front of the jet while the spa jets are on. This will force water flow thru the hose and prime the hose. Once you see water running from the other end of the hose, drop the hose in front of the spa jet into the footwell and as long as the loose end is lower than the end in the footwell, a siphon will drain the spa as fast as the spa drain will. Remember to turn off electric to the spa once you have established a siphon. You may have to bucket the last bit of water in the footwell. Goodluck.
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