Customer Questions and Answers for Timer, Defrost by Whirlpool

George, There should be several "closed" circuits or resistance readings when the timer is operating properly. First there should be a "closed circuit, or t least a resistance reading from terminal 1(white) and terminal 3(blue). This is the timer motor circuit and should be present regardless of timer cycle. In the cooling mode, There should be a closed circuit between terminal 1(white) and terminal 4(orange) When you manually advance the timer into the defrost mode the terminal 1(white) and terminal 2(yellow) should close, the terminal 1 and 4 circuit should "open" and vice versa. If these circuits are correct, then you'll need to remove the freezer evaporator cover and check the defrost heater and thermostat for closed circuits When cold(the defrost thermostat would check "open" at room temperature).

Greg, To replaced the defrost timer, you will need to lower the control panel in the refrigerator compartment which would be held in by a screw in the front and one toward the middle of the control behind the light. The timer will have 2 screws holding it in place. Make sure that you disconnect power before replacing.

Hello Larry. From the inside of the unit, you will remove the control panel to access and replace the timer 63001353 in the unit.