Whirlpool GBS277PDB Technical Guide - Page 19

THE OVEN DOOR LATCH ASSEMBLY The door latch solenoid operates on a 120-volt dc pulse from the electronic control board. When the solenoid plunger is retracted, the oven door is in the "unlocked" position. When the solenoid plunger is extended, the oven door is in the "locked" position. When the door lock switch is open, the control senses that the door is "unlocked." When the door lock switch closes, the control senses that the door is locked. The door lock switch, mounted on the solenoid bracket, is in the N.O. (normallyopen) position. During the self-clean cycle, the control board sends a 120-volt dc pulse to the solenoid windings, which extends the plunger (pushes it out), and moves the latch arm to lock the oven door. The movement of the arm also actuates the door lock switch arm, and closes it. When the self-clean cycle is over, the control board sends a 120-volt dc pulse to the solenoid, the plunger is retracted (pulled in), the latch arm releases the door, and the door lock switch opens. Door Lock Solenoid Door Lock Switch Oven Light Switch Door Lock Solenoid Plunger Retracted Plunger Extended Door Pin Out Door Open & Unlocked Door Pin In Door Closed & Locked 3-3