LG LSWS305ST, Service Manual

Page: 43 / 61

Resistor Min Max
Bake 22.0 35.0
Convection 25.0 42.0
Inner broil 22.0 35.0
Outer broil 35.0 46.0
5-11
CHECKING FLOW CHART BY FAILURE MODE
Oven does not heat (including F-9 error)
Measure the Resistor of each heater
Between the DLB Relay’s L2 and
each heater Relay’s Harness point of Figure 1
(
①, ②, ③, ④ and ⑤ )
(measure the resistance after cooling down)
Normal:
Figure 1
L2
Bake
Bake
Bake Bake
Bake Bake
Bake Bake Bake Bake Bake
Bake Bake
Bake Bake
Bake Bake
Bake
Inner Broil
Inner Broil
Inner Broil Inner Broil
Inner Broil Inner Broil
Inner Broil Inner Broil Inner Broil Inner Broil Inner Broil
Inner Broil Inner Broil
Inner Broil Inner Broil
Inner Broil Inner Broil
Inner Broil
Convection
Convection
Convection Convection
Convection Convection
Convection Convection Convection Convection Convection
Convection Convection
Convection Convection
Convection Convection
Convection
Out Broil
Out Broil
Out Broil Out Broil
Out Broil Out Broil
Out Broil Out Broil Out Broil Out Broil Out Broil
Out Broil Out Broil
Out Broil Out Broil
Out Broil Out Broil
Out Broil
If it is not correct,
Measure heater resistance directly.
Is resistor value OK?
END
No
Yes
Replace the error heater
2
1