I posted several weeks ago about the "91" error on my Intex SWG. I purchased one May 2010 and after one summer I had to have it replaced in October 2010 because of constant "91" error. It worked pretty well for summer 2011, but it has been nothing but a hassle this summer. I am adding bleach every to every other day because the SWG keeps saying "91". Yes, I've done the vinegar thing numerous times to clean the cells, I've made sure to check the salt content in the water, etc. I've contacted Intex and the first operator said they could replace it, but I had to pay the shipping to send it back. I asked if I could speak with a supervisor to inquire why I would have to pay the shipping (better than purchasing the whole unit, but I just wanted to verify that I had to) and she told me that I would get a call within 24 hours. Never happened. I called back today and the operator said the first operator was wrong. They cannot replace the unit because it is not under the 2 year warranty. The 2nd one was received in October of 2010. I don't understand why the 2 years wouldn't apply to the one I currently have that I received in October 2010.
Anyway, recommendations? I really can't afford to spend a ton of money on something else, but is there something I should purchase that isn't TOO expensive that I would receive better service from or would you recommend I continue with Intex. Thanks for listening to my frustration and offering recommendations.