Maytag 15003918 Wiring Information - AppliancePartsPros.com

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Part Number:	AP4965516
MFG Part Number:	15003918
Made by:	Maytag

The defroster does not seem to be getting power. When i enter the forced defrost cycle from the control there ia 90 vac measured at the wire leading to the defroster when measured open circuit. The voltage goes to 0 when the wire plugged to the defroster. Defroster measures 31 ohms. Same thing happens whith the new defroster rod I ordered. It acts as if there is a high resistance or bad power feed. What does the defrost terminator do. e.g. sensor for hot evaporator so shut down defrost. Is it overridden in the forced defrost mode? Does the control board drive the defroster with a relay or a triac? I don't how to test the defrost terminator or the control board for powering the defrost coil. Note: I have been trying these tests with open refrigerator and warm fully defrosted evaporator. I have also tried cooling the terminator and no difference.

Ken for Model Number AMANA ABL2222fes

Answer Hello Ken. The defrost thermostat should read closed when cold. If it reads open, it is bad. If the thermostat and the heater are good, then the defrost control 12784415 will need to be replaced in the unit. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html

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I noticed that you talk about the evaporator fan turning off when you open the door (or at least making sure the light switch is depressed to check the fan). My refrigerator doesn't do this. The fan stays on whether or not i have the light switch depressed, although the lights seem to work properly. I have also had intermittent problems with frost build up to the point that the refrigerator gets warm. I think the frost is blocking the vent to the refrigerator at that point since there is ice on the evaporator coils and on the inside of the freezer wall. I thought the defrost heater was the culprit and was planning on replacing it, but i wonder if the control board may be the issue given that the fan seems to stay on and the frosting problem is several months between incidents. If I defrost the coil manually, the refrigerator and freezer and fan all work again. It is possible that the door to the refrigerator or frezer was left cracked for a few hours within a week or so before the freeze up, but I would expect a defrost cycle to clear any problems with that. Is it OK/normal that the fan does not immediately turn off when you open the doors to the freezer or refrigerator? Can the refrigerator/freezer run for months without a defrost heater?

Ken for Model Number ABL222FES

Answer Hello Ken. The fan only turns off on certain models, not all models. It sounds like you may have a defrost problem with the unit. Check and see if there is any frost build up on the back wall of the freezer. If so, you will need to test the defrost heater and the defrost thermostat. They should read closed for continuity when cold. You can test this with a multi-meter TJMA-DMT3. I will include a link at the end to assist you how to use the multi-meter if needed. If both parts are good, you will need to replace the defrost timer. Once the problem is repaired, you will need to thaw out the ice on the coils before the unit will operate properly. Hope this helps. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html

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Not going into defrost, runing all the time. Temps are all ok or too low. Is this a cotrol board? No defrost timer on wiring diagram. Were is it located?

John

Answer Hello John. The defrost timer is made into the control board 12784415 of the model number you provided. It is located inside the refrigerator cabinet at the to where you set the temperature of the unit. Hope this helps.

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