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The freezer is frosting and the refrigerator is getting warmer. The defrost coil and t stat seem to test ok with no ac power to them. Both circuits closed, hot wire to coil, draws about 4. 9 amps.
I believe the adaptive defrost board is bad. However, if replaced will that clear the frost or will I have to shut the unit down?
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Rank: Advanced Member
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I would manually defrost it when I replaced the defrost control board.
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This site shows a manual defrost timer, probably behind the control panel. Turn it till the compressor stops, then check for defrost action. If so, replace the defrost timer.
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Rank: Advanced Member
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Interesting...I have found some models show a defrost timer in the parts diagram, but do in fact use a adaptive defrost board.
If that is the case look for the part number on the board to get the correct one ordered.
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Rank: Advanced Member
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If it has an adaptive defrost board, you can get the manual defrost procedure at www.applianceaid.com will show two procedures, one should work.
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Rank: Member
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First off, thank you, everyone for the help. Yes my Adaptive defrost board is bad and I have yet to repair it, two manual defrosts since then. additionally, a good coil cleaning and lowering the stats and not opening it too much has helped.
That being said, I think the Adaptive board is way too expensive and I was thinking of retrofitting it to a mechanical timer. Perhaps someone has done this before? I would probably have to switch the wiring but it is identifiable and I also traced it through to the coil and stat. The older mechanical timers seem to have the same form factor to screw it into place.
Has anyone one this?
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Rank: Advanced Member
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Joined: 7/24/2007(UTC)
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If you use the defrost timer for this model as richappy pointed out this site shows then all you should have to do is plug the timer in the same way the adaptive defrost control board is. Done it a few times myself in the past, not much to it really.
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Rank: Advanced Member
Groups: Senior Expert
Joined: 9/10/2007(UTC)
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Yes Appliancejunk is right, a mechanical timer can be used in this model. This refrigerator is only consuming less than $12 a month in energy due to superior insulation and a very efficient compressor.
The adaptive defrost in "normal" conditions (excluding a very hot and humid condition" will not save a lot of energy compared to a mechanical timer.
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