LG T2028AFPS5 Service Manual ▷ View online
5-5. INLET VALVE ASSEMBLY
57
Wiring
diagram
Function
Test
points
and
Result
Circuit in the MAIN PCB
Wiring diagram
INLET VALVE
Inlet valve driving circuit
Depending on the cycle and water temperature, the controller will energize the hot or cold water
valve solenoids to meet the selected water temperature.
After unplugging the connector of the defective valve, check the resistance.
(1) (2)
(2)
(2)
(2)
(2)
(1)
(1)
(1)
(1)
* Each circuits of loads in wiring diagram are all same.
Test
Points
(1)-(2)
Result
0.8-1.2 k Ω
58
5-6. HEATER ASSEMBLY
Wiring
diagram
Function
Teat
points
Result
Circuit in the MAIN PCB
Wiring diagram
1. The Wash Heater is designed to raise the wash water to the desired temperature selection during
certain wash cycles.
2. The Steam generator heater is designed to make the water to the steam during steam cycles.
* Each circuits of loads in wiring diagram are all same.
Heater driving circuit
WASH
HEATER
Wash Heater
Wash Heater
(1)
(2)
Test
Points
Result
(1) to (2)
12-18 k Ω
5-7. THERMISTOR ASSEMBLY
59
Wiring
diagram
Function
Test
points
Circuit in the MAIN PCB / Wiring Diagram
Wash Thermistor
The thermistor (temperature sensor) is used to monitor water temperature in the tub, Steam
Generator, Dry duct and Condensing duct.
MAIN PCB
(2)
(1)
60
Result
Wash Thermistor
The lowest
limit
standard The upper
limit
70.519
46.997
22.285
15.803
46.997
22.285
15.803
6.984
5.180
5.180
76.531
50.584
23.623
16.635
50.584
23.623
16.635
7.471
5.573
5.573
82.848
54.307
24.978
17.467
54.307
24.978
17.467
7.971
5.981
5.981
Test Points
(1) to (2)
Remarks
Result [㏀]
At 86℉(30℃)
At 104℉(40℃)
At 140℉(60℃)
At 158℉(70℃)
At 203℉(95℃)
At 140℉(60℃)
At 158℉(70℃)
At 203℉(95℃)
At 221℉(105℃)
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