My daughter fridgemaster - The fridge is not cooling , the freezer is cold...i defrosted the freezer...fridge still warm....the unit runs constantly so i turned the thermostat down to 1 it shut down, then tried setting 3 and it shut down...still not cold-no sign of a leak, bypassed thermostat and still warm and fridge did continue running?...does anyone have any answers that could help me please?..thankyou..