LG LRMVS3006 Series Service Manual page 44

Defrost Heater Error (F dH)
1
Check the Door gasket .
Is door gasket damaged?
No
2
Check the Defrost control part.
Is heater resistance 42~50Ω ?
TEST MODE 1 RESISTANCE [Ω]
CON9
5th pin ~ 13th pin
Yes
3
Check the Def rost control part.
Is Def r ost Sensor resistance
22k↑ o r OFF?
CON4
Resistance [Ω]
22nd pin ~ 21st pin
23ºF / -5ºC
32ºF / 0ºC
41ºF / 5ºC
50ºF / 10ºC
59ºF / 15ºC
22k↑
Replace the
Yes
Door gasket
Change
Fuse-M
No
42~50Ω
Replace
OFF
product
38k
30k
24k
19.5k
16k
4 Input Test 3 Mode
(Push the button 3 times)
Check the Heater Voltage.
Is voltage 112~116V?
TEST MODE 3
CON9
5th pin ~ 13th pin
Yes
5 Input Test 1 Mode
(Push the button 1 times)
Check the Heater Voltage.
Is voltage 0V?
TEST MODE 1
CON9
5th pin ~ 13th pin
Yes
-44-
1. Check the
No
input Voltage
2. Replace
Main PCB
Voltage [V]
112V ~ 116V
Replace
No
Main PCB
Voltage [V]
0V
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