Defrost Control Assembly - LG LMX21981 Series Training Manual

LMX21981xx

DEFROST CONTROL ASSEMBLY

LMX21981xx
The defrost sensor consists of a
temperature sensor and a thermal fuse.
This assembly is attached to the metal side
of the evaporator and senses temperature.
It turns off the defrost heater at 46 °F
(8° C).
The thermal fuse (Fuse-M) is for safety to
prevent overheating during the defrost
cycle. The thermal fuse is a single-use item;
when it blows, it must be replaced as an
assembly.
Remove the grille assembly in the freezer.
Unplug the defrost control assembly.
Cut the tie-wrap that holds it in place.
Remove and replace the assembly.
Secure it with a new tie-wrap.
Plug in the new assembly and replace the
grille.
In the two photos to the left, the orange
leads are the defrost sensor.
The blue and brown leads are the fuse link.
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