Refrigerator not defrosting, heater bad. replaced defrost heater, and still
Answer Hello Kevin. You will need to check the defrost thermostat and the timer and see which on is bad and is causing the issue with the unit.
Is it possible for the defrost heater to go bad and the thermostat still be good?
Answer Hello Jack,
It is very possible for the defrost heater to fail and the defrost thermostat be good. When the defrost thermostat is closed, it simply passes the current. Unless the points try to open while excessive current is passing, it will not damage the defrost thermostat.
How do you remove and replace defrost heater?
Answer Hello Uriah. Remove the back wall out of the freezer and access the coils. Make sure the power is disconnected from the unit. Unplug the wires for the heater and remove any ice on the evaporator coils. Next, remove the clips securing the heater to the evaporator coils and pull the bottom of the coils forward slightly. Now slide the heater assembly out of the coils in the freezer. Install the new heater 218657301 in reverse order.