LG LMX25964 Series Service Manual page 44

11. COMPONENT TESTING INFORMATION
11-1 Defrost Controller Assembly
Function Controller assembly is consist of 2 kinds of part those are fuse-m and sensor. we can
decide part is defect or not when we check the resistance.
Fuse-M can cut off the source when defrost heater operate the unusual high temperature.
Sensor give temperature information to Micom
How to Measure the 2 pin connected to Fuse-M.
Measure lf the ohmmeter indicate below 0.1ohm
(Fuse-M) Fuse-M is good. If Fuse-M measures infinite
ohms, it is open and needs to be replaced.
awe Measure the 2 pin connected to Sensor.
(Sensor) If the ohmmeter indicate 11kQ (at room
temperature) It is normal.
Checking the resistance at other
temperatures, check the sensor resistance
chart.
Standard Fuse-M (at all temperature) Sensor (at room temperature)
Test Point Ressult
(1) to (2)
0~0.12
Test Point Ressult
(1) to (2) 112
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