– 47 –
The main board uses one thermistor to maintain
proper temperature in the refrigerator. The
thermistor can be found in a foam block behind
the upper LED housing. It is important that the
thermistor be reinstalled in the block behind the
LED housing to maintain proper temperatures.
To test or replace the thermistor, follow the
steps under
Thermistor Replacement
in the
Thermistors
section of this service guide.
The refrigerator has two lower LED boards to
illuminate the pans. The LEDs can be found in
the cabinet next to the climate zone vegetable
pans.
Lower LED Diagnosing
When one of the LED boards fails completely, the
other lower LED board and LED housing will still
work.
Main Board with Door Open
• J2 pin 8 (
red
/
silver
) - J5 pin 1 (
pink
/
black
):
4 - 13 VDC *(see NOTE)
Three Pin Connector at Cabinet
• Red
/
silver
-
pink
/
black
: 4 - 13 VDC *(see
NOTE)
NOTE:
When one or both of the refrigerator
doors are opened, the main board delivers 4 VDC
to the LED boards and increases the voltage to
13 VDC for full brightness.
Lower LED Removal
The LED board and LED shield are separate
parts, it is recommended to replace both parts
when an LED board is being replaced.
1. Remove all shelves, pans, and pan covers.
2.
Using a putty-knife or small flat-blade screw
driver, gently pry the LED shield away from
the cabinet. For the left LED, pry from the
upper rear corner (as shown below) and for
the right LED, pry from the lower rear corner.
3. Once tipped out of the cabinet, lift the left LED
shield out of the cabinet and pull down on the
right LED shield to remove it from the cabinet.
4. Disconnect the 3-pin connector and unclip the
LED board from the LED shield.
4. Tip the front of the LED housing down and
pull the housing away from the refrigerator.
NOTE
: When lowering the LED housing, pay
attention to the foam block and where the block
is located. It is important that the thermistor be
reinstalled in the block behind the LED housing to
maintain proper temperatures.
5. Disconnect 2-pin connector.
18 cu. ft.
24 & 26 cu. ft.
Foam Block &
Thermistor
18 cu. ft.
24 & 26 cu. ft.
Refrigerator (FF) Thermistor
Lower LEDs
