LG LFX28968SW Service Manual - Page 39

Closed, working, Damper is normal., Go to 6, Change the damper, Other, It's normal, Change damper,

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Page 39 highlights

No Checking flow 5 Damper checking method. Inputting TEST Mode, Check the damper and PCB. (1) (2) (3) (4) 6 Check the Fan motor. Rotate fan using your hand. Stuck change the motor. (Cause of ice or rust inside of motor) Result & SVC Action Test Damper Mode State 1 Mode Open 2 Mode Closed 1,2 Not mode working SVC Action Damper is normal. (Go to 6) Change the damper Point (1) to (2) (3) to (4) Result 370 ~450Ω Other 370 ~450Ω Other SVC Action It's normal Change damper It's normal Change damper Point Motor Result Sticky Not Sticky SVC Action Change the motor Change the PCB - 39 -

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- 39 -
No
5
Checking flow
Damper checking method.
Inputting TEST Mode,
Check the damper and PCB.
6
Check the Fan motor.
Rotate fan using your hand.
Stuck change the motor.
(Cause of ice or rust inside of motor)
Result & SVC Action
(1)
(3)
(2)
(4)
Open
Closed
Not
working
1 Mode
2 Mode
1,2
mode
Damper is normal.
(Go to 6)
Change the damper
Test
Mode
Damper
State
SVC Action
(1) to (2)
(3) to (4)
370 ~450
Ω
Other
370 ~450
Ω
Other
It’s normal
Change damper
It’s normal
Change damper
Point
Result
SVC Action
Sticky
Not Sticky
Motor
Change the motor
Change the PCB
Point
Result
SVC Action