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Saratoga Spa flow switch

Display panel displays "FLO" alternately with the temp. A flow switch may have malfunctioned. How do I find and replace?

Posted by Anonymous on

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Posted on Jan 02, 2017

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SOURCE: Panel reads "water sensor opened"

I had the same problem. The water sensor is on a pipe running into your pump. It will have a circular clamp around it. Remove the clamp and pull the sensor out of the pipe. The wires should run into your control box. disconnect the wires and replace. My water sensor was part 7790. Not sure if you have the same one. Do an online search. bestbuypoolsupply.com has them for $50 plus 9 for shippng. Hope this helps.

Posted on Mar 12, 2009

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SOURCE: 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.

Posted on Nov 07, 2009

  • 64 Answers

SOURCE: Whisper Flo model WFE 6

Possible bad motor. You would need to test voltage at the motor connections with a multi meter. If the voltage is correct, then the motor or start capacitor is bad. If the proper voltage is not correct, then you would need to look upline in the electrical system to find the problem

Posted on May 20, 2010

  • 19 Answers

SOURCE: pool and spa heater will not turn on, low pressure on display

1) check the fuse on the transformer. You will get "low pressure" if the fuse is blown.
1a) remove front panel with flat head screw driver turning both big screws 1/4 turn clockwise
1b) look up under the 1 remaining front piece for 2 screws (one on each side). remove them and the 1 small panel slides down
1c) transform is directly in the center of this compartment
1d) red wire on transform has a black fuse case - twist open and check fuse (with an ohm meter it should read a dead short if it is working).
1e) if not working - replace with standard 250v 2a bus fuse.
2) it really is low pressure
2a) backwash pool or at least make sure pressure in filter take is not too high (high filter tank pressure == low water pressure in heater)
2b) if you have a bypass valve make sure it is not in bypass mode so most all pressure from the pump is going tothe heater
2c) right next to the transformer is the pressure switch. It has a small copper tube attached to the back and 2 wires in the front. Put an ohm meter across the two leads on this device. With the filter off it should be open, with the filter on it should be closed (short). If not either the copper tubing is clogged, the switch is faulty, or there is not enough water going through the heater. The amount of water that goes into the heater is adjustable and the water pressure switch is also adjustable. The owners manual explains how to adjust both but neither should need adjustment unless you have a special configuration (explained in the manual).

Posted on Sep 20, 2010

  • 5370 Answers

SOURCE: hot tub will not stay hot,it reaches temp set on

The hot tub itself can be faulty or the heating element is getting faulty. The breaker is a GFI device that compares current to and from the tub. If there is a slight imbalance, the GFI will trip.A common failure in hot tubs is the heating element. What you can do is disconnect the heater and then run the hot tub. If the breaker doesn't trip, then the element is at fault.---------- If the element checks out ok then the problem can be motor or the pump itself.If motor is weak then it will overheat in few seconds and it will shut off the heat pump.If motor is checked ok then there can be blockage in pump causing this problem. The pump is probably the hardest working piece of equipment on your spa. To keep water moving throughout the entire circulation system the pump draws the water from the spa then pumps it on through the filter, heater and back through the jets. -------- check out this possibilities.This should help.Thanks.Helpmech.

Posted on Feb 15, 2011

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1 Answer

My spa pool is coming up with FLO flashing where the temp is shown, its a sunbeam and now wont hold temp


when a spa shows flo in a alarm message (like yours) this is a indication that the flow sensor is telling you that it has not enough flow thru the filters this most times disables the heater so it wont become overheated , Most times its caused by dirty filters or a foreign object getting past them , but ive also seen very poor water chemistry cause a false showing of this message , this usually requires a sensor replacement and correction of water chem to correct this

Aug 30, 2015 | Pool & Spa

1 Answer

Circulation pump is running but FLO is displayed on panel and heat light goes out.


FLO is displayed because something has caused a reduction in water pressure through the heater. The spa control will turn the heater off when FLO is displayed to prevent a burn out.
I suggest checking the filter cartridge, the suction fittings & any valve which could be partially closed & restricting flow.
Try run the spa with out the filter cartridge if this clears the error then it is the cartridge.
If none of these work it is possible the your flow switch and/or pump is beginning to fail.
Good luck!

Mar 24, 2013 | RTO Sundance Heater Element Harness Black...

1 Answer

Display on hot tub says low flow


Low flow is an indication of not enough water flowing through the system.
Check the flow by removing the filter from the spa and see what that does for you. Many times even brand new filters have enough tiny fibers from the manufacturing process to not let enough water flow through to operate a spa.
If you remove the filter and it still has a flow issue then make sure the gate valves on either side of the pump are completely open and no restrictions.
Also make sure the water is full in the spa.


Rod
US Parts Center
888-521-6183

Feb 15, 2013 | Pool & Spa

1 Answer

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.

Jan 29, 2012 | Qca Spas Majestic Series Aruba Xl Hot Tub

1 Answer

J-300 won't heat. FLO readout


FLO = It typically for a Flow Switch or pressure switch (heater is deactivated. Pump may also be deactivated).
It is most likely a flow/pressure switch failure.

Before you buy a replacement try running the spa with out the filter cartridge - Checking if dirty cartridge is the issue. Also check that all gate valves are all the way open & locked.

Jan 05, 2012 | Jacuzzi Home

1 Answer

My spa hums for a few seconds then kicks off. No flow. lights and control display are working.


Is the shut off occuring @ the GFI? & is there an error code displayed on your topside?

If the breaker is kicking off, the best way to troubleshoot is to disconnect all components, (pumps, heater, circ, etc.) & then plug one in & turn the breaker on. repeat the process until you locate which component is tripping the breaker.. then you know whats causing the trouble

Feb 24, 2011 | Aqua Flo Aquaflo Flo Master Xp2 Spa Pump...

1 Answer

I have a servicecode , flo, and the temp. Will not reach the seting i have done


Hello,
FLO code relates to the correct water pressure flowing through the heater tube. This is a safety procedure in adequate water flow could damage your equipment.
As this code can be one of the hardest to diagnose start by checking that all water suction & discharge slice valves are all-the-way open. If they are okay try clean or replace the filter cartridge.
If the cartridge is new or clean try temporarily run the spa with out the filter cartridge, it could possibly be preventing flow.
If the issue persists you can check that the suction fitting covers are free of debris. If the suction fittings are clear of blockages it is likely that pressure switch or flow switch (depending on your spa model) has failed.
These steps will fix a flo code the majority of the time, the pump is another potential cause but least likely.

Feb 20, 2011 | Qca Spas Majestic Series Grand Cayman Hot...

1 Answer

LF READING ON PANEL


LF means "Low Flow". Remove the filters to see if the code goes away. If not, the pressure switch may be bad.

Feb 09, 2010 | Aqua Flo 1 HP Aqua-Flo Pump: 1.5" in/out,...

2 Answers

Qca Spa pumps and blower will not come on, water down to 35º f


Ken,

You need to contact a hot tub technician/engineer as you clearly have issues.

'ICE' means that the water temperature is too low and therefore the pumps will be turned on to prevent freezing within the plumbing. Depending upon the spec and settings, the heater maybe disabled during 'ICE' condition.

'ECON' is Economy Mode. If you have a mode button, keep pressing it until you see 'Stan' on the display. This will put the system back into the standard mode.

'FLO' means that there's insufficient flow of water through the heater, or non at all. 1) Check the water level - top up if low. 2) Ensure that all jets are open and flow water - if they don't you may have a pump issue. 3) Remove the filter(s) and see whether or not this clears the fault, if so clean or replace the filters.

'COOL' is displaying because the set temperature is much higher than the current water temperature.


As I mentioned at the start, you really should get someone to take a look at your hot tub. You may have a few issues that need resolving.

Regards,
Ian.
http://hottub.synthasite.com

Feb 07, 2010 | Qca Spas Majestic Series Aruba Xl Hot Tub

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