Report "I have a zodiac lm3 24 chlorinator. When it changes polarity every 2nd time the no flow light comes on and the output of chlorine stops ( fixed orange light at output). When the polarity changes again it is ok. The chlorine is only being produced from one pole. There is water flow over the cell but no chlorine. I have only replaced the cell about 18 months ago. I manually change the polarity but same thing happens so I think it may be the PCB power board. Any ideas?"