How do I test the defrost control board, light switch 6 times 5 sec? Is that how all this boards work? Can I UNPLUG THE BOARD AND SIMULATE A DEFROST BY SHORTING THE PINS INSIDE THE CONNECTOR?
Answer Hello Allan. 1. Disconnect the unit from the power
2. Open the fresh food door and remove
any items on the top shelf.
3. Remove the light shield and the temperature
control housing. 4. Connect the refrigerator to a wattmeter.
5. Make sure compressor is running (cold
6. Using an insulated number 22 jumper
wire short between L1 and Test; this will
put the refrigerator into a defrost for
approximately 23 minutes.
7. The watt meter should read between
500 to 600 watts depending on the
Box does not defrost if I unplug the defrost clock and jump L1 to heater which is terminal #4 to terminal #5 and then plug in box to power. It should defrost if defrost heater and defrost thermostat are good correct? I am a technician.
Answer Hello Allan,
This is the old Amana control. You don't short terminals on this control since if you short terminals on this configuration, you can too easily fry the microprocessor.On this configuration you press the door switch in 6 times in 5 seconds. If the control is operational, the unit will go into the defrost cycle. As per the manufacturer, the door switch presses have to be slow enough to be, in their own words, "intentional". Shorting wires together on this model as per the manufacturer is "asking for trouble".