Heater Assembly - LG WM3988H*A Service Manual

9-6. HEATER ASSEMBLY

Wiring
diagram
MICOM
Heater driving circuit
1. The Wash Heater is designed to raise the wash water to the desired temperature
Function
selection during certain wash cycles.
2. The Steam generator heater is designed to make the water to the steam during
steam cycles.
Test
points
(1)
Result
Test Points
(1) to (2)
Circuit in the MAIN PWB
12V
Heater
Tab Relay
(2)
Wash Heater Steam Generator Heater
Wash Heater Steam Generator Heater
Result Test Points
12-18 Ω
Wiring diagram
YL
2 1 2 1
2 1 2 1
RD BL
Vac
DRY
HEATER
* Each circuits of loads in wiring diagram are all same.
(2)
(1)
Result
(1) to (2) 12-18 Ω
46
MAIN PWB
WH BL BK
2 1 2 1
2 1 2 1
GY BK YL BK
Vac
STEAM WASH
GENERATOR HEATER
HEATER
(1)
(2)
Dry Heater
Dry Heater
Test Points Result
(1) to (2) 10-40 Ω