Your cold water heater is guaranteed by it's manufacturer not your RV dealer and the CLOSEST RV repair facility would be able to repair it under warranty. Not many live 2500 miles from the nearest RV dealer. In a worst case situation you MIGHT have to pay for it then get reimbursed for the repair but if that is the case, call the manufacturer (Atwood or Suburban) and get prior authorization to avoid issues later. :)
Good luck / Skip
http://www.atwoodmobile.com/water-heaters.asphttp://www.suburbanwaterheater.net/