Pressure Switch - Adjustable, SPST-NO, 3902
Pressure Switch - Adjustable, SPST-NO, 3902
Pressure Switch - Adjustable, SPST-NO, 3902
Pressure Switch - Adjustable, SPST-NO, 3902

Pressure Switch - Adjustable, SPST-NO, 3902

BX9928
Save $-21.95
/
Need Help? Send Photos!
Select Title

Adjustable Spa Heater Pressure Switch, 3902, SPST-normally open, pilot duty, by Tecmark.

  • ⅛" NPT thread (⅜" actual O.D.)
  • 1-5 PSI adjustable
  • 2-Terminals: NO, common

Product Notes: 1A @ 120VAC, 72 VA  Pilot Duty @ 24VAC. Equiv. numbers are 3965, 36142, 3902, 3903, 34-0178, 6560-869. Also replaces 510AD0181, 510AD0167, SWPU510AD0064, 800320-3, 800315-3, 12209, 01515-04, RME-PSS-8320, WGK510AD0167.

Spa Pressure Switch Adjustment Instructions
Need Help? Send Photos!
Often bought together:
Flow-Thru Universal Spa Heater Element - Titanium or Incoloy
Flow-Thru Universal Spa Heater Element - Titanium or Incoloy
BX5000
Quick View
Balboa Pressure Switch Cable 21223
Balboa Pressure Switch Cable 21223
BX9405
Quick View
Pressure Switch Cable for EasyPak, HydroQuip, Gecko
Pressure Switch Cable for EasyPak, HydroQuip, Gecko
BX9403
Quick View
Clear Silicone Sealant
Clear Silicone Spa-Pool Adhesive Sealant
MT1059
Quick View
Spa System Flush - Hot Tub Cleaner
Spa System Flush Hot Tub Cleaner
MT1028
Quick View
Lube Tube O-Ring/Gasket Lubricant-Sealant
Lube Tube O-Ring/Gasket Sealant
BX9912
Quick View
Pressure Switch - Adjustable, SPST-NO 34-0178C-K
Pressure Switch - Adjustable, SPST-NO 34-0178C-K
BX9404
Quick View

Customers praised this adjustable pressure switch for spa/hot tub repairs. Reviews highlight "easy install," "works perfectly," and compatibility with various spa models. Customers appreciated "fast shipping" and "good pricing." The switch effectively resolves error codes and heating issues. One concern about longevity of a related heater was noted.

  • 5 stars: 49 (91%)
  • 4 stars: 4 (7%)
  • 3 stars: 1 (2%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
K
Kerry J.
Right part, fast shipping, good prices

I ordered a pressure switch from Spa Depot. The part was right and shipped fast. They have very good pricing.

T
Terry R.
Spa Pressure Switch SPST-NO, 3902

They had the correct pressure switch for my spa. The price was good. It arrived promptly. And it worked perfectly, without adjustment.

A
ANTONIO D.
Good Spa parts

Great service Amy was very helpful and knowledgeable

W
Wayne C.
Exact Match - Works Perfectly

Easy install. Fast shipping.

S
Sharon
Working

SpaDepot help me get the parts I need to get my hot tub up and running. Thank you so very much.

J
Jason E.
Good product, works well

Had it installed in minutes and works as expected.

S
Steve D.
Very pleased

Part ordered came very quick and was exactly what I needed. Had hot tub back running within 15 minutes! Very pleased.

J
Jim D.
Fast

Always fast response.

l
lawrence g.
I would buy this again.

Simple to change out. Easy to wire. Works great. Sweepstakes.

J
Jess
Exactly what we needed!

Very efficient website! Shipped as promised!

R
Ruth T.
Customer service came through again.

It was the part I needed to get my spa back running correctly.

R
Roland B.
I would recommend this product

Worked just fine on Coast Spa.

L
Lou
easier to install than first thought

Replaced original part and works perfect

J
Jeff H.
Worked as advertised. No issues.

Easy change to swap out the old one for the new one.

T
Theresa
3902 Pressure switch

Repair hot tub

D
Doug F.
Solid product.

Replaced older presure switch. This one works fine.

T
The m.
This worked as expected.

I replaced thermostat, heater still did not work,discovered that the pressure switch failed. I found this switch installed it and had a relay clicking on and off almost immediately. I adjusted the switch now heater working. Now when it cools down the hot tub will be ready for us again!!!

G
Gerry
It works

Part works installed it my self

W
William B.
if needed i would buy it again

although it didn't come with instuctions i was able to go online and download instructions

m
michael t.
Spa pressure switch

Worked great bought this one replacing another one I bought three years ago old one wasn't bad but a little rusty so I replaced it when I replaced heater

L
La s.p.
Parts

Thank you for helping always so helpful best place to order parts and get with in a day or so

M
Michael M.
Great fast service

product worked just as it should. Thank you !

M
Marco B.
Great service and prompt delivery!

I had to change one part I ordered and they did it fast and correct without any hassle or issue. Thanks Spa Depot!

M
Mike
works great

works great, thank you.

w
walter s.
GREAT

WORKS GREAT

J
Jim
worked perfect

Worked, easy to replace

D
Dave
Perfect fit

My hot tub is ancient but this worked like a charm. No more error code!

E
Earl P.
Flow error and no heat= flow switch.

Exactly what I needed to fix my hot tub. After checking continuity on the heater element and finding it ok. This switch was causing a flow error and preventing the element from heating. No more flow error and plenty of heat. Thank You.

T
Troy
What I needed

Fixed my FLC error code as soon as I installed it

J
John L.
basic

basic replacement part. fits well.

J
Jpe
Fast and efficient

The fellow on the phone was able to help with a replacement switch and filled my order quickly.

J
John B.
Great Product

works great. perfect fit.

T
Thomas H.
I would buy again

I got psi switch and heater together they work and fit perfect. Easy to install

Your Recently Viewed Products: