Whirlpool 721.663398 Microwave Oven User Manual


 
-23-
(2) CHECKOUT PROCEDURES FOR RELAY
- PROBLEM (A) -
FAN motor and oven lamp turn on without touching
START key when the door is closed.
Remove the mate connector of I/O
CON from the circuit board does
the unit still operate?
GOOD
GOOD
Replace the
circuit board
- PROBLEM (B) -
FAN motor and oven lamp turn on When the door is
closed and START key is touched.
Check the interlock switches
Replace the
micro switches.
Defective
RELAY or poor
connection of
relay
Replace
RELAY or correct
the connection.
NO
NO
YES
NO
NO
YES
YES