Code 91 always shows after 8 hours of operation still low salt.
As you stated, 91 means the unit thinks you have Low Salt. I have seen this occur with my 8110 if the salt level is actually
too low as well as when the plates have a large amount of white
crystals on them. If your plates look clean (I use a pressure washer to
clean mine), check the salt level using salt test strips you can get at
a pool supply store. If all this checks out, I found this suggestion while searching for a solution to a problem I was having. I ran across this suggestion at this site:
"Xlav8r wrote:Hey , the "CODE 91" fix was said a while back
regarding resistors. pull off cover carefully, both the flow sensor and
cell power cables exit the case making lifting the plastic case
difficult but manageable. look for three adjustable resisters, one
above the other. They are marked (or mine was) VR1, VR2,and VR3 on the
circuit board. they were black and about the diameter of a pencil
eraser with a small Philips (+) adjustable head. The head was locked
with glue? but it can be scraped off. The original suggestion said to
turn the VR1 resister a quarter turn CCW. This did not work for me but
I added an additional quarter turn CCW (now half a turn CCW) and it is
back working as it did originally. I will keep an eye on my salt
content to keep at 3000ppm as suggested in manual."
I have not tried this particular solution since I am not currently having this problem.
Jul 02, 2009 |
Intex Automatic Salt Water System for ...