LG 29478 Service Manual ▷ View online
5-4. PUMP MOTOR ASSEMBLY
45
Wiring
diagram
diagram
Circuit in the MAIN PCB
Wiring Diagram
* Each circuits of loads in wiring diagram are all same.
5-5. INLET VALVE ASSEMBLY
46
Wiring
diagram
diagram
Function
Teat
points
points
and
Result
Circuit in the MAIN PCB
Wiring diagram
INLET VALVE
Inlet valve driving circuit
Test
Points
Result
(1)-(2)
0.8-1.2 k
Ω
Depending on the cycle and water temperature, the controller will energize the hot or cold water
valve solenoids to meet the selected water temperature.
valve solenoids to meet the selected water temperature.
After pull out the connector of defective valve, check the resistance.
* Each circuits of loads in wiring diagram are all same.
(1) (2)
(2)
(2)
(2)
(2)
(1)
(1)
(1)
(1)
5-6. HEATER ASSEMBLY
47
Wiring
diagram
diagram
Function
Teat
points
points
Result
Circuit in the MAIN PCB
Wiring diagram
Test Points
(1) to (2)
Result
12-18 k
Ω
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
HEATER
Wash Heater
Wash Heater
(1)
(2)
5-7. THERMISTOR ASSEMBLY
48
Wiring
diagram
diagram
Function
Teat
points
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.
Steam Generator, Dry duct and Condensing duct.
MAIN PCB
(2)
(1)
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