LG LRE3061ST Service Manual page 58

CHECKING FLOW CHART BY FAILURE
Oven does not heat
Unplugged the unit
1
Is the Connector disconnected loose?
1. Electric wiring of Main PCB All taps.
No
Reconnect or adjust the
connection
All Taps
2
Measure the resistance of each heater.
(The resistance is shown below)
-9-8-
No
Replace the defected
heater
Right rear
Left rear
Warm zone
yes