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Espritman  
#1 Posted : Wednesday, July 8, 2009 6:58:47 AM(UTC)
Espritman

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Posts: 22

Can someone help me locate the defrost timer in my Jenn-Air side-by-side?
Thanks,
Espritman
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woodchuckie  
#2 Posted : Wednesday, July 8, 2009 7:14:20 AM(UTC)
woodchuckie

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You don't have a defrost timer. On most newer models the timer is replaced by a high tech, power saving, trouble free adaptive defrost control. It knows when and for how long to defrost your freezer. Lots do go bad. If your defrost thermostat and heater are good, replace the control.

Adaptive defrost control is part 13 on diagram 2>Replacement parts for JENN-AIR JCD2389DEB | AppliancePartsPros.com
Espritman  
#3 Posted : Wednesday, July 8, 2009 8:11:48 AM(UTC)
Espritman

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Joined: 7/5/2009(UTC)
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Thank you, woodchuckie.
I've located a small rectangular gold colored box with the printed words INVENSYS ADAPTIVE CONTROL. It's screwed (2 Phillips) to the side of the upper part of the refrigerator inside wall under the removable shield housing the 2 lights and other controls. 3 questions:
1. How can I test to see if it is functioning properly?
2. I am able to lower the front section of the large plastic shield covering the lights, etc. but can't figure out how the clips in the back corners release.
3. If it becomes necessary to replace this control, what is required for its removal and replacement? 2 screws+ Wires? Plugs? Connectors?
Thank you again for your timely response!
Espritman
woodchuckie  
#4 Posted : Wednesday, July 8, 2009 8:53:37 AM(UTC)
woodchuckie

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I don't know how to test it only that if the thermostat and heater are good then it is bad if you have a defrost problem. Here's some descriptions of how to replace. One of them should apply to yours.


Defrost circuit was inside the control assembly inside the refrigerator so I snapped the two release clamps located to the rear of the assembly (lights and controls). Slid the whole assembly cover off and removed the lightbulbs and two screws right above them. In from of that is the temp switches and directional slider, removed the two screws holding that. With the four screws out, removed whole assembly and laid it dowm on the first shelf, defrost circuit is at the back right, easy change out but take note which way the 4 prong plug fits into the circuit board.

I first dropped the Cover Assy, which covers lites and controls, this was done by pulling it forward and it drops down, did not remove top shelf so It was a bit difficult to tilt cover assy. for removal. There is a srew located close to filter assy. in back use nut driver 1/4"located to remove this screw, there are then 2 screws located to the rear and side of light holders, both phillips head, the one on the left side is a bit tricky to remove but I use a thin bladed scredriver, Next there are 2 screws located on both ends od the slides that control temp, both again removed witn1/4 " nut driver, the whole upper assy drops down and forward the Adeptive Defrost assy is located in the back right corner of this assy, unplug the wires and unit snaps out, I foud it easier to pop off top cover of new unit so I could see connector assy when I reattached the wires, then replaced the top assy and snapped new unit it place, Reassymbly was reverse of removal, before placing cover assy back in place I replaced both lamps as 1 was out .
Espritman  
#5 Posted : Wednesday, July 8, 2009 9:52:02 AM(UTC)
Espritman

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Joined: 7/5/2009(UTC)
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Thank you for your patience. I followed your excellent instructions and located the circuit board. Before replacing it, I would appreciate guidance on how to test the thermostat/heater unit to determine the correct cause of the defrosting problem.

I found the heater/thermostat assembly and would like to test it. Test instructions say to use an ohmmeter probing the 2 wires exiting the heater element but there are 3; two together (white and white/black) and one separate heavier black one. I have an ohmmeter and can locate the proper scale but I am no expert in its use. Can you help with the process considering my description here?
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