When I melt the ice with hair dryer it goes down the drain ok.
Answer Hello Joyce. Pour hot water through the drain to make sure it is clear. If so, then level the unit and make sure the freezer is around 0°.
The defrost water freezes and does not go down the drain. The drain is not clogged...could it be the defrost heater?
Answer Hello Joyce. No, the drain has to be clogged, or the unit is not level for the water not to drain. The heater is working if it is melting the ice and causing it to turn into water.
Is the heater made from glass?
Answer Hello Dee! Yes, the defrost heater WR51X10027 is a resistance wire encased in glass. Thanks!