Sundance spa FLO error

[gdamato]

Hello all,

I've been getting very frequent FLO errors on my 2002 Sundance Optima 850. I bought 2 new filters and I'm still getting the error from time to time. The only way to fix it is to remove the filter and use a plunger where the filter goes, plunge it a couple of times and then the temp shows back up on the LCD screen and I can put the filter back. Any clue what it could be?

 

[ajw22]

Maybe @RDspaguy will have ideas when he wanders by.

 

[gdamato]

Thank you @ajw22! @RDspaguy any help would be appreciated!!

 

[Krulligo]

Sold or flashing FLO error?

Most likely the FLO switch is faulty. Is your circulation pump running 24/7? Can you remove the side cover and see if the FLO switch is in the opened or closed position when the FLO error is there.

 

[gdamato]

Solid FLO error on the screen. I did make sure that the FLO switch is in the right direction and I believe my circulation pump runs 24/7 (unless the FLO error is showing, then it stops)

 

[gdamato]

I read some other posts and inspected the flow switch and it looked a little gunked up. I unscrewed it (used a wine cork to temporarily plug the hole, lol) and scraped the gunk off of the switch. It's been working, I will keep an eye on it and if it happens again soon I'll assume the switch is going bad and I'll try to replace it. Thank you all for your help!!!

 

[gdamato]

Spoke too soon! I just went out there and it had the FLO error again. The FLO switch looks clean (unlike before), so I turned my breaker off and back on and now the screen is showing a FLO2 error . This is killing me! Any ideas?

 

[Krulligo]

You sure you installed the switch back in the correct direction? Is the switch itself in the closed or opened position when the FLO or the FLO2 error is shown.

If you give the switch a tap or 2, or wiggle the cables coming out of it a bit, does the error message go away?

More than likely it is a bad FLO switch and easy to repair/replace yourself. Cost is about $40-50 for a switch. My suggestion is to get an original Sundance Spa one and not an aftermarket one.