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Issue---Just realized our boiler was over filled. We have an automatic low water cut off which I had removed and cleaned this past fall, along with draining and flushing the 3 year old wet return. I drained the boiler until the low water cut off light was activated, waited through the delay and watched it fill to the normal level and shut off like it should. I pride myself in keeping a close eye on my system and it's maintenance, but must admit this one has slipped by me. Questions: 1) Can these cut offs operate sporadically? 2) What should I be looking for?