LG WD4370HVA Service Manual ▷ View online
4
6
9-7. THERMISTOR ASSEMBLY
Circuit in the MAIN PCB / Wiring Diagram
47
Result
Wash Thermistor
Test Points
(1) to (2)
Result
(tolerance ±5%)
39.5 k
Ω
26.1 k
Ω
12.1 k
Ω
8.5 k
Ω
3.8 k
Ω
2.8 k
Ω
Remarks
At 86°F (30°C)
At 104°F (40°C)
At 140°F (60°C)
At 158°F (70°C)
At 203°F (95°C)
At 221°F (105°C)
Steam generator Thermistor
Test Points
(1) to (2)
Result
(tolerance ±5%)
39.5 k
Ω
26.1 k
Ω
12.1 k
Ω
8.5 k
Ω
3.8 k
Ω
2.8 k
Ω
2.1 k
Ω
1.4 k
Ω
1.0 k
Ω
0.7 k
Ω
0.4 k
Ω
Remarks
At 86°F (30°C)
At 104°F (40°C)
At 140°F (60°C)
At 158°F (70°C)
At 203°F (95°C)
At 221°F (105°C)
At 241°F (116°C)
At 266°F (130°C)
At 293°F (145°C)
At 320°F (160°C)
At 356°F (180°C)
48
Be sure to unplug the machine before disassembling and repairing the parts.
CONTROL PANEL
1
Unscrew 2 screws on the back of the top plate.
2
Pull the top plate backward and upward as
shown.
3
Disconnect the Display PWB assembly
connector from the cabling.
4
Pull out the drawer and unscrew 2 screws.
5
Remove one screw.
6
Lift the side the control panel assembly and
pull it out.
7
Unscrew the 8 screws from the control panel
assembly.
8
Disassemble the display PWB assembly.
TOP PLATE ASSEMBLY
CONTROL PANEL ASSEMBLY
DRAWER
CONTROL PANEL ASSEMBLY
DISPLAY PWB ASSEMBLY
10. DISASSEMBLY INSTRUCTIONS
49
MAIN PWB ASSEMBLY
Disconnect the POWER connector and
the pressure switch assembly.
Remove the protective cover.
Unscrew 1 screw on the back.
Remove the main PWB.
Disconnect the connectors.
PROTECT COVER
1
2
3
4
5
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