Frigidaire LGUB2642LF2 Service Manual page 42

Electronic Control
Figure 3-15. LED Power Board For Lighting In Food
Compartment
Figure 3-18. LED Lighting in Fresh Food Compartment Only
Fresh Food Lighting
Frigidaire bottom freezer models can have LED or
incandescent lighting in the fresh food compartment
depending on the model number.
On dispenser models, the light switches are located at
the top outer corners on the face of the cabinet. On
non-dispenser models, the fresh food compartment light
switch is part of the UI board mounted in the left fresh
food door. It is controlled by a magnet in the right fresh
food door.
Use service mode tests 3 and 23 to diagnose fresh food
lighting issues.
Diagnosing LED Fresh Food Lighting
From lower control board
(Dispenser Models)
If test 23 fails, verify connections to the inoperative
Figure 3-16. Models With Incandescent Lighting in Food
switch. If no failed connections are identified, replace
Compartment
the failed switch.
If test 3 fails, diagnose as follows:
- Determine if failed LED is causing the failure. LEDs
are connected in series. Start by replacing one LED
with a known good LED. Continue until the failed LED is
replaced and the circuit is completed.
- If no failed LEDs are identified, proceed to check
electrical continuity and identify failed connections.
Refer to the wiring diagram located in the last section of
this manual.
- If no failed connections are identified, check to make
sure that the main contorl board is supplying voltage to
the LED board. Replace LED board if defective, or main
control board if no power is suplied to the LED board.
Figure 3-17 Checking Magnet In Door
3-20