Hi, new here. We have a 2013 Thor Chateau 31L and to have the loud pump. We don't dry camp often, but we did once this past summer. I noticed that if I left the switch for the pump in the on position at night, that the pump would make a 1 second sound every now and then. Not too often, noticed it a couple times the first night and just got up and turned the switch off. Is it normal to do that by itself? Don't have any leaks.
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