I have been having trouble with my freezer leaking water onto the floor & forming ice onto the floor of freezer, from reading other posts it looks like I have to clean the drain hose. However, I moved the fridge out to look behind it & when I moved it back into place I heard a "sizzling" sound. when I looked inside, I noticed water dripping down behind the back panel into the drain hole & heard it sizzling as if the water were dripping onto something hot. Should I be concerned? will cleaning out the drain hose solve this problem?o