LG LRMM1430SW Service Manual page 25

(2) CHECKOUT PROCEDURES FOR RELAY
FAN motor and oven lamp turn on without touching
START key when the door is closed.
NO
GOOD
- PROBLEM (A) -
YES
Remove the mate connector of I/O
CON from the circuit board does
the unit still operate?
NO
Replace the
circuit board
FAN motor and oven lamp turn on When the door is
closed and START key is touched.
YES
GOOD
- PROBLEM (B) -
Check the interlock switches
NO
Replace the
micro switches.
-24-
NO
YES
Defective
RELAY or poor
connection of
relay
Replace
RELAY or correct
the connection.