Our pool and swg has been thru one season. When I turn on the swg it comes on but just says "on." It usually warms up and then says "sanitising." I can then see it generating. Now it doesn't. I'm clueless. I will say no one from the builder told us to clean it so we will be doing that this weekend. Any other advise, we leave town next week and I can't leave the pool with no chlorine source.