Have Splendide stackable unit. DW pressed "Start' and received one "popping sound." She then washed four loads wo problems that morning/afternoon. No leak noticed. However, when we got ready for bed that evening, we noticed water on the bedroom floor and in the closet carpet. Contacted Splendide Customer Service and they had not heard of a "pop", the washer working and hours later noticing a leak. Any ideas on what could be the problem?