LG GR-L28AK Series Service Manual page 40

In Water Mode,
Is the voltage between
pin4 and pin11 of CON3 in
main PWB like as below,
while pushing the level
switch?
Output voltage of machine room water valve
Test Point
Pin4 To pin11
Yes
First Water- valve
Is the resistance value
between (1) and (2) of the
First-water valve like as
below?
Checking resistance of First-valve
Test Point
(1) To (2) 360 ~ 420
Yes
Replace
No
MAIN PWB
(Position No
: 500A)
Main PWB
CON3
Pin11 GY
Pin4 BL
Result
115 V
Replace
No
First
Water-valve
(Position No
: 619A)
(1)
(2)
Machine room
Result
- 40 -
Second Water- valve
Is the resistance value of
Second-water valve like as
below?
Door Dispenser Ice Maker
Checking resistance of Second-valve
Test Point
(1) To (2) 360 ~ 420
Yes
Is the condition of the micro
switch like as below?
(1) YL
(2) PK
Status
Normal
Push the Lever
Yes
After plug in,
explain to the customer!
Replace
No
Second
Water-valve
(Position No :
619B)
(1)
(2)
In door
Result
Replace
No
Micro Switch
(Position No
: 279G)
Tester
Infinity
0