LG LDG4315ST Service Manual page 79

3
Is the DLB relay normal?
Measure the resistance
Normal: infinite
Abnormal : shorted
Tab 62(or Tab61)
and Tab 60 : RY60
TROUBLESHOOTING
No
Replace the
Main PCB
DLB
Relay
yes
Plug in the unit
4
Is the value of thermistor
normal? (Refer below)
Check with the test mode
To enter the test mode, follow these steps:
(1) press the CLEAR button
(2) press the upper BAKE and BROIL buttons
at the same time
(3) press the upper BAKE and BROIL buttons
at the same time again.
(4) press the NUM 3 button
Normal: Thermistor value at room temp is
from 70˚F to 90˚F
8-23
No
Replace the
Main PCB
Current Oven Temp