LG LDG4313BD Service Manual page 81

Convection fan not work, F7?
Unplug the unit
1
Check the resistance of
each fan motor. Normal?
(Measure the resistance
after cooling down.
The resistance is shown
below)
Fan motor
Fan High
Fan Low
TROUBLESHOOTING
No
Replace the
Fan motor
CN61
CN60
Resistance[ ]
Ω
Approximately
25 ± 10%
30 ± 10%
yes
2
Is the fan motor relay normal?
Measure the resistance of fan
motor relay and Live
Normal: infinite
Abnormal : shorted
(It is also sure to disconnect the connector.)
1st pin of CN62 and cathode of D503
3rd pin of CN62 and cathode of D503
8-25
No
Replace the
Main PCB
Conv.
Fan High
: RY 61
Conv.
Fan Low
: RY 62
yes