Hi All,
I've got a 5y.o. hottub with BRETT AQUALINE EM-203T
(I believe cat. #25-2350TLAX-UL), bought it with a house.
It seem to work OK except one thing, the highest
temperature it heats up to is 97F. The controls are on top
of the spa. I see hoses going to the EM-203T box and to
the controls module, so where is the thermostat and is it
possible to adjust it? I would probably figure it out if I can
take a close look and find info on the the contlols module,
but I do not even see a way to unmount it. If anybody
knows how to deal with such problem I'd appreciate some
help. I've made some pictures showing the controls module
from top and from inside, also the pictures of the EM-203T
box (you can browse all of them here).

The most informative ones are below:
EM-203T:


EM-203T inside the box:


Controls top view:


Controls from inside (bottom):


Thanks,

Hi All,
It turned out that there is a good guide that answers all my
questions:
Thermostat Replacement or Calibration, With Side Control Housing

A friend gave me the jacuzzi & pack it all worked but it wasnt getting
hot .. any way i got this phone # 1-800-772-7275 . they faxed me a
wireing dia. and also told me to put a jumper on the presure switch
to see if that would help it did..but you can also order a manual if needed
hope that will help you it did me ..