On Dec 28, 7:52*am, wrote:
On Thu, 27 Dec 2007 13:10:25 -0800 (PST), lesnpat
wrote:

My spa is a 2002 Regency Spas, made by National Equipment Mfg. Corp.
The circuitboard system has no mfr. name anywhere. *There are both a
knob thermostat control on the box at the heater and a topside
pushbutton control at tubside. *The heater is electric Vulcan style
(flow-through 2" stainless tube). *Pump is 220v and heater is 110v.

The spa heats normally, but quits short of target because the topside
digital thermometer reads 5 degrees warmer than actual water temp. *Is
there a way to calibrate the digital system to get the reading in sync
with the actual water temperature?

This company sels just about every part for every tub ever made. They
have a catalog online with photos and illustrations that are a big
help in identifying what brand componets you have. There are even
pictures of circuit boards inside of spa packs.

http://aquaticpartsco.com/

Most, if not all, spa makers build the wooden frame, and cast the tub,
but buy everything else from someone else. Sometimes the OEM will put
the spa maker's brand name on the part as a special touch, but its
just cosmetic.

Once you know who made the various parts of your spa, it will forver
be easier and cheaper to obtain parts and information.

It is a problem not knowing who made the controls. You would think
there would be a little tag or something somewhere, but I don't see a
thing. I'll peruse Aquaticparts' catalog and maybe I'll see something
familiar there.