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SubZero 690/SE M1971808: Is this a Defrost Terminator Thermosat problem?


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3 replies to this topic

#1 gowestwardho

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Posted 06 February 2012 - 05:40 PM

I noticed that for at least the past two days there was a strange throbbing noise in the house. I finally today narrowed it down to the 690S which appeared to be running pretty much nonstop. As soon as I opened up the hood I noticed the fan wasn't running and the compartment with the two black canisters (compressors?) seemed too hot.

I "think" I saw EC 21 but I can't say for sure - and for some bizaare reason SubZero allows you to go back and recall the Temp Codes (F, r, FE, rE) but not the Error Codes (bummer). At the time those temp codes read: F -11, rE 34, FE -04, r 42. OK, so even though my fins were clean I went over everything and cleaned it up again.

SO TWO PROBLEMS: 1)In researching, it appears I have either a faulty Defrost Terminator Thermostat, or another system leak? (SubZero did a whole retrofit on this a few years back as they had mfg defects with the old materials used).
And 2) NOW THE UNIT ISN'T COMING ON AT ALL. Yikes!

PS, I've already replaced the door switches and al the thermistors in years past - each of which I bought from you, BTW

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#2 gowestwardho

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Posted 06 February 2012 - 05:52 PM

UPDATE: At least now the unit has just turned back ON and the fan is running.
So as to the rest of my problem....any advice

#3 RegUS_PatOff

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Posted 06 February 2012 - 08:00 PM

may need to see the frost pattern of the Evaporator Coils inside the Fridge and the Freezer
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#4 woftam

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Posted 06 February 2012 - 08:51 PM

Can you get current thermistor readings? When you seen fan motor not running could you hear compressors running?
There is a huge difference between 10 years experience and one years experience ten times over.




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