LG LMX28983ST, Training Manual

Page: 29 / 104

TRAINING MANUAL LMX28983ST
LMX28983ST Page 29 FOUR DOOR REFRIGERATOR
DAMPER, continued
There are two damper motors; one to control the flow of cold air into the refrigerator
compartment and one to control the flow of cold air into the pantry, excluding the crisper and
vegetable drawers. Air flow throughout the crisper drawers is controlled by opening or closing
the vents on the drawers.
The dampers are controlled by a stepping
motor. Every time the refrigerator is
powered up, the motors seek home so they
can adjust to the proper positions.
The refrigerator damper has a 4-pin
connector.
Check the resistance across the red and
yellow terminals.
It should be 415
Ω ± 10%.
Check the resistance across the blue and
white terminals.
It should be 415
Ω ± 10%.
The pantry damper has a 6-pin connector.
The wire colors are arranged differently but
work the same way. The two additional
brown wires are for the temperature sensor
in the pantry.
The resistances are the same as above,
even though the wire colors are in different
positions.
To check the sensor, read across the
brown terminals and refer to the chart
on page 97.