Hi. Have had problems with chlorine levels all Summer. Last few years pool has been hassle free but not this year!
I believe now that the chlorinator is faulty - still producing chlorine but just at a much slower rate. It is self cleaning, we don't have hard water and no calcium buildup visible. As it is still producing some it has been hard to identify as I check the sunscreen levels, ph, salt etc... but I have now down tests in the evening with all levels good and it should produce about 2ppm over 5 hrs but is producing about 0.4ppm.
Any thoughts on this? Tips to confirm? All lights are healthy. The chlorinator is 2 years old.