LG GR-L28AK Series Service Manual page 27

Is the resistance value
between pins 10 (BO) And
4 (BL) of CON3 like as below?
Pin4 BL Pin10 BO
Resistance
Test Point Result
(1) To (2) 34 ~ 42
No
Is the connection loose?
No
Is the resistance value of
Fuse –M like as below?
(1) BL (2) BN
Open or Short of Fuse-M
Test Point
Result
(1) To (2)
0
Yes
Yes
Normal
Yes
Reconnect
Replace
No
Fuse-M
(Position
No : 400A)
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Is the resistance value of
heater like as below?
Heater Resistance
Test Point Result
(1) To (2) 34 ~ 42
Yes
Is the resistance value of
DEF-sensor like as below? It
depends on the temperature.
Defrost Sensor Resistance
Test Point Result
129.3
-30
76.96
-20
47.34
-10
30
0
Yes
Explain to the customer!
: It can be occurred, when the gasket is not
stuck to product or when you put the high
temperature loads (hot foods) a lot in the
product.
Replace
No
Heater
(Position
No : 408A)
(1) (2)
Replace
D-sensor
No
(Position
No : 400A)
(1) BO
(2) BO
Test Point Result
19.53
10
13.03
20
8.896
30
6.201
40