I don’t know which water heater cover door you have, but there have been two problems associated with the water heater covers. The first (on my Axis) was Thor did not put the rubber seal all around the door, so water ran in thru the bottom corner and ruined my water heater. Other owners have had issues with the slats in some doors which dissipate the heat (not all units have these slats). In some RVs the slats pointed up instead of down, so the water just ran into the water heater.
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