Code 91 after 4 hours

[gillybill64]

My Polaris Autoclear Plus is showing no problems, and accurate PPMs, until approx 4 hours into the cycle. It then shows code 91, and only registers 1500 PPMs. I also noticed the voltage is reading at a higher rate (19.0 vs 23.6)when it is in 91.
I have changed fuse, cleaned cell with muriatic acid, tested cell in a bucket of salt water. It works. I've reset the panel, and am now turning it off when it codes and simply turning it back on. Then it makes chlorine for another 4 hours.
Any ideas? Could it be as simple as having the wrong fuse?

 

[domct203]

My Polaris Autoclear Plus is showing no problems, and accurate PPMs, until approx 4 hours into the cycle. It then shows code 91, and only registers 1500 PPMs. I also noticed the voltage is reading at a higher rate (19.0 vs 23.6)when it is in 91.
I have changed fuse, cleaned cell with muriatic acid, tested cell in a bucket of salt water. It works. I've reset the panel, and am now turning it off when it codes and simply turning it back on. Then it makes chlorine for another 4 hours.
Any ideas? Could it be as simple as having the wrong fuse?

Welcome to the forum.

What fault is code 91? (low flow, low salt, etc)

 

[79TAKid]

91 is for low salt....

Not to go off topic but I'm also having trouble with my Polaris Autoclear.... Maybe yours is smarter than mine because mine does not display the salt PPM that i'm aware of.