LG LFX28978 series Service Manual page 41

9-7 Poor cooling in Freezer compratment
No
1 Check the sensor resistance.
The sensor is determined by
the temperature.
For example, 23
2 Reset the unit and
Input Test 1 Mode.
(Push the button 1 time)
3 Open the freezer door and check the air
flow.
4 Check the air temperature. Cold or not ?
Checking flow
<CON6>
indicates -4°F.
Result & SVC Action
(1) To (2)
-22°F / -30°C
-13°F / -25°C
-4°F / -20°C
5°F / -15°C
14°F / -10°C
23°F / -5°C
32°F / 0°C
Status
Blowing
Not blowing
Status
Cold
Not cold
- 41 -
Result
40
30
23
17
13
10
8
SVC Action
Go to the 4
Check the F Fan motor
SVC Action
Check the Compressor
And sealed system