Tecmark Spa 3902 Series Universal Pressure Switch 1 Amp w/Out Brass Fittings 3902

This "universal" pressure switch fixed my FLC error, even though it wasn't the 'Dtec-1' in the parts manual for my S-Class Gecko spa pack. I assume Covid supply issues are to blame, but more than one spa part sites could not fulfill my pressure switch order even though listed as 'in stock' but wasn't. SO grateful RDW had this one (had to manipulate a bit to fit as it was larger in diameter than the previous failed switch) but thrilled to be up and running again! Thank you RDW and Amazon for an old hot tub that's hot again! :)Edit: Wanted to add after my initial repair/review that this pressure switch is adjustable from 1-5 PSI, and the S-Class needs 2 PSI and required 1 and 1/4 rotation clockwise to function correctly. Went 1 and 1/2 turns for the FLC error to stop, then back tracked to 1 and 1/4 rotation and running fine. Going counter clockwise kept me at FLC error, so clockwise is the way to go to get to 2 PSI. ;) Good luck to us all patching together our old tubs! :D*UPDATE March 2024: This pressure switch is still functioning flawlessly in my ancient Nordic Warrior hot tub...just thought I'd share! :D

Installed in hot tub and it.took care or the 3 dot error I was getting thanks for a great price and great product

Not the products fault but not easy to install without emptying your hot tub. I did it by closing the two gate valves, loosing the two heater ends (letting them leak some of the water), taking wires off heater (power off of course) and then swiveling the heater so the pressure switch faces out instead of up. The old one looked pretty calcified (from small leak I assume) and thought it would be hard to remove (no real place for a wrench?) ended up could take off with just my hand. Water still came out pretty strong but was able to get the new one on pretty quick. Still everything got somewhat wet. Let it dry ( 37*) (open the gates and put wires back on) for a couple of hours, turned on the power and hot tub surged on and off, control panel not working, quickly turned off power thinking I might of screwed up the electronic board? Put a small space heater underneath closed up and crossed my fingers. Let it really dry everything out for about 3 hours, then started Yea! Everything works the blinking three light don't come on anymore!

Like I said above, cross threaded really easy, I did get it to work, works perfectly otherwise

Funciona adecuadamente. Buenas calidad

Worked great on my Balboa HS200. Had to slightly rotate the heater tube in the mounts to get clearance for this switch as this unit is larger in diameter as to the original and interferes with the motherboard.

Exact replacement for my 17 year old dynasty spa. No adjustment needed, spa started heating right after install.

Was a challenge to install in my hot tub due to the large increase in diameter of the unit.