Call Toll-Free in US
(866) 418-1840
(Mon-Fri) 8:30 am - 5 pm PST
(Sat) 9 am - Noon PST

E10 Circulation Pump w/ Flow Switch
$229.00 $175.00

buy now Product Info
E10 Circulation Pump
$229.00 $169.00

buy now Product Info
E-3 Fountain Pump
$195.00 $149.00

buy now Product Info
¾” Flow Switch
$34.75 $32.00

buy now Product Info
UltraPure Flow Sensor Tee
$17.50 $15.50

buy now Product Info
Flow Switch Tee Assembly
$51.00 $45.95

buy now Product Info
Temp Sensor / Flow Switch Assembly
$79.95 $49.95

buy now Product Info
Len Gordon Pressure Switch
$21.00 $17.75

buy now Product Info
Red Pressure Switch
$16.50 $14.25

buy now Product Info
Pressure Switch
$35.95 $22.75

buy now Product Info
Tri-Delta Pressure Switch
$29.95 $26.95

buy now Product Info
Sensor Harness
$54.95 $45.00

buy now Product Info
Temperature Sensor Tee
$10.00 $9.75

buy now Product Info
Threaded Sensor Plug 3/4
$7.50 $5.95

buy now Product Info
Flow Switch
$54.50 $48.50

buy now Product Info
C.P. Flow Switch Assy.
$75.95 $65.00

buy now Product Info

Hot Tub Flow Switch

Have you ever seen a Dimension One Spa low flow error on your upper control panel and did not know what it meant? All spa heaters require an adequate amount of water flowing through them to activate and warm the water. If there is not enough “flow” and the heater turns on, safety issues could occur. Because of this all D-1 Spas use a flow switch or a pressure switch, (depending on the heater design), to sense adequate flow. The flow or pressure switches are an important safety device used for your protection.

Just remember no flow – no heat, and low flow – no heat.

Flow can be affected by an inadequate water level, old or dirty filters, clogged 01781-27 heater or ozone lines, or a defective circulation pump. If your Dimension One hot tub was made after 1997 and has 2 filters, water is moved through your D-1 heater with a 01512-320E circulation pump. To learn more about fixing a low flow error, watch our low flow video. If you still see the low flow error message and have a question, please call us. Resolving this situation might take some additional assistance and the expert service techs at Easy Spa Parts know all the tricks. We’ve built our business and reputation helping spa owners troubleshoot problems over the phone.

Dimension One Spa Flow Switch

If your D1 spa flow error is on a hot tub made with just one filter, you probably have a 01515-04 Dimension One Spa pressure switch. Many of the issues listed above apply here too, so our low flow video is a good place to start troubleshooting. Feel free to call if you have a question!

In summary, a Dimension One hot tub low flow error is something we see often. There are several causes, many of which you can fix yourself. If you need assistance, we are here to help with hot tub parts and troubleshooting. Remember, don’t spend more time or money than necessary on your spa. Give us a call instead.

Special Ground Rates!
You pay what we pay.. See details

Find Your Spa Parts


“It has been a long time since I have seen anyone do anything like you have done. It is appreciated. Problems occur in all business and we certainly have had them here. Money aside, it is good to see you have integrity. ”
- Rich S.