Heater Driver Circuit - LG WM2801H Series Training Manual

TRAINING MANUAL
HEATER DRIVER CIRCUIT (In General)
The heater driver circuits are similar for both heaters on the machine: the wash heater,
which heats the water in the tub to the specified temperature; and the steam generator
heater, which boils water to make steam for the steam cycles. The elements are similar,
but not interchangeable, approximately 1,000-watt electric heaters.
WIRING DIAGRAM
WM2801H*A
When the heater is energized, use your
multimeter to read the voltage. It should
be approximately 120 V
You can read the voltage either at the
heater terminals or at its connector on the
main board.
With the heater element disconnected
from the circuit, the resistance should be
15 Ω ± 20%.
When using the connectors for test points,
pay particular attention to connector and
wire colors and numbers.
Page 82
WM2801H*A
.
AC
Washing Machine