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Amana ARB8057CSR Bottom Freezer, freezer warms up then starts freezing again


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7 replies to this topic

#1 tsolecki

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Posted 11 March 2012 - 03:34 PM

My 9 year old Amana is confusing me. A few weeks ago it started making a 'buzzing' noise. Then I noticed that the ice cubes were melting in the freezer. Whoops - that's a clue that there's a problem. A couple of days later I looked again in the freezer,and the entire ice cube compartment had turned into a solid block of ice. It would seem that the ice cubes had all melted to water, then the freezer started freezing again.

I've put a remote thermometer in, and see that the temp ranges from +2C (36F) to -20C(-4F) . It was - 20 earlier this morning, now it's back up to -10. It makes me think the compressor system is fine because it is quite capable of chilling, and the problem is either the compressor won't start when it's supposed to, or there is a "sticky thermostat" if that's possible.

Any suggestions?

Thanks,
Tony

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#2 RegUS_PatOff

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Posted 11 March 2012 - 03:51 PM

The Defrost Timer is normally 33 minutes every 8 hours.,
but the time should be interrupted by the Defrost terminator (switch)
when the Evaporator Coils get warm

Above 42°F ±5° .................................. OPEN
Below 12°F ±7° .................................. CLOSED

The Defrost Terminator is clipped to the Evaporator Coils,
but may have become dislodged
(or may be shorted)
.

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#3 tsolecki

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Posted 11 March 2012 - 07:12 PM

Can you describe where I can find the Defrost Timer/Terminator? From the part shop, it looks like (?) it should have orange wires coming from it, but I don't see any parts with orange wires.

Thanks,
Tony

#4 kdog

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Posted 11 March 2012 - 07:31 PM

You'll need to remove the rear freezer cover to access the defrost termination switch - Looks like this:

http://www.repaircli...2001937/1023500

 

Defrost-Thermostat-12001937-00698955.jpg

The timer is located inside the panel with the thermostat - Looks like this:

http://www.repaircli...7001036/1005886

 


Defrost-Timer-67001036-00766577.jpg

Best bet is to try and catch it in this "warming up" act and see what components etc are running at that time. Tapping or wiggling can make a flaky thermostat cut in, turning the defrost wheel of the timer a click causing it to start etc.


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#5 RegUS_PatOff

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Posted 11 March 2012 - 07:47 PM

... I don't see any parts with orange wires.

somewhere on the Evaporator Coils,
original may have Orange and Brown wires
.

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#6 kdog

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Posted 11 March 2012 - 07:49 PM

Such as the wires pictured above
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#7 tsolecki

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Posted 11 March 2012 - 08:15 PM

Attached File  Copy of IMG_1035.JPG   33.23KB   6 downloadsAttached File  Copy of IMG_1034.JPG   33.03KB   7 downloads

I've attached pictures of what I see when the back panel is removed. I'm not sure where to look.

#8 kdog

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Posted 11 March 2012 - 08:20 PM

You need the rear panel on the inside of freezer
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