LG LRSXC2706 Series Service Manual page 45

Troubleshooting
Defrost Heater Error
( F dH)
1
Check the Door gasket .
Is door gasket damaged?
No
2
Check the Defrost control part.
(2) Is Defrost Heater resistance
39 ~ 44 ?
Yes
3
Check the Defrost control part.
Is Defrost Sensor resistance
22kΩ↑ or OFF?
22kΩ
4
Input Test 2 Mode
(Push the button 2 times)
Replace the
Yes
Check the Heater Voltage.
Door gasket
Is voltage 112~116V?
Change
Fuse-M
No
5 Input Test 1 Mode
(Push the button 1 time)
Check the Heater Voltage.
Is voltage 0V?
Replace
OFF
product
6
Explain to customer
46
TEST MODE 2 Voltage [V]
CON9
7 nd pin ~ 13 th pin
Yes
TEST MODE 1 Voltage [V]
CON9
nd th
7 pin ~ 13 pin
Yes
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Replace
NO
Main PCB
120V
Replace
No
Main PCB
0V