LG LRE3085ST User Manual

9-22
CHECKING FLOW CHART BY FAILURE
Oven hot, F6?
Is the resistance of
thermistor normal?
Check:
Pins 1and 2 of CN13 wiring
in main PCB
Normal- approximately 1.09kΩ at room temp.
No
Replace the
defected
thermistor
1
CN13
Unplugged the unit
Yes
Yes
Is the Heater relay normal?
Measure the resistance of
heater relay and L.
Normal: infinite
Abnormal: shorted
No
Replace the
relay PCB
2
CN103 1
st
pin and CN102 1
st
pin
Yes
Yes
Is the DLB relay normal?
Measure the resistance
Normal : infinite
Abnormal : continuity
No
Replace the
relay PCB
3
Normal Abnormal
Broil(RY108) Relay
Resistance
Broil(RY109) Relay
Resistance
Normal Abnormal
CN103 1
st
pin and 2
nd
pin
CN103 1
st
pin and CN102 2
nd
pin
ConV(RY107) Relay
Resistance
Bake(RY104) Relay
Resistance
CN101 1
st
pin and 2
nd
pin
L2
DLB1(RY106) Relay
Resistance

LG LRE3085ST Specifications

General

Brand	LG
Model	LRE3085ST
Category	Ranges
Language	English