I also had PLO pools referred by my home warranty company. I called just before the 4th of July weekend because my Salt Cell is not producing ANY chlorine despite running almost 8 hours per night.
The technician that came out to look at my system had no experience or knowledge of the Salt System installed on my pool. He tested my water and then told me that my chemicals were not at the correct levels and that my salt cell was fine. Then he proceeded to tell me that his electronic test equipment had not been calibrated recently. REALLY?!?!? How can I take anything he says seriously when he admits that he is using his tools improperly?
He also told me that since the water exiting the salt cell was "cloudy" that it is functioning correctly and he promptly left.
I discussed the issue with two other pool professionals and was told absolutely that without a test of the cell there is no way to know if it is working correctly and that there should be some amount of chlorine produced even if other levels were not correct. My assumption is that the contract provider collects a flat fee for each service call they close, therefore the more calls they take without doing anything the more money they make. That's when I realized why the service tech was so curt and quick... He couldn't get out of my yard fast enough, from hello to goodby could not have been more than 10 minutes and he never did more than glance at the salt cell or controller, which is the part that he was there to repair...
Luckily I called my Home Warranty company and they are sending out another company. Stay away from PLO Pools at the very least they lack professionalism and courtesy, but most important to me they seem to be incompetent!