We had water coming in around our fridge. The leak was present only during heavy rain, so we knew it wasn't due to fridge operation. Went up on roof, took off the vent cover and looked down the vent screen. Sure enough, water was coming in there, water staining and rust. I took all 40 screws out and removed the screen cover. I scraped off all original sealant and replaced with new putty tape. Put screened cover back on, caulked around perimeter and caulked over all screws, replaced roof vent cover. We have had no more problems. I think the screws had worked themselves loose over time and water was entering there.
Safe Travels
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