Output Voltage Of Machine Room Water Valve - LG LFX28977ST/01 Service Manual

In Water Mode,
Is the voltage between
pin2 and pin11 of CON3 in
main PWB like as below,
while pushing the level
switch?

Output voltage of machine room water valve

Test Point
Pin2 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
360 ~ 420 Ω
(1) To (2)
Yes
Replace
No
MAIN PWB
(Position No
: 500A)
Main PWB
CON3
Pin11 GY
Pin2 BL
Result
115 V
Replace
No
First
Water-valve
(Position No
: 619A)
(1)
(2)
Machine room
Result
Second Water- valve
Is the resistance value of
Second-water valve like as
below?
Door Dispenser
Checking resistance of Second-valve
Test Point
(1) To (2)
Yes
Is the condition of the micro
switch like as below?
(2) PK
(1) YL
Status
Normal
Push the Lever
Yes
After plug in,
explain to the customer!
- 42 -
Replace
No
Second
Water-valve
(Position No :
619B)
(1)
(2)
In door
Ice Maker
Result
360 ~ 420 Ω
Replace
No
Micro Switch
(Position No
: 279G)
Tester
Infinity
0 Ω