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bogreen

Kitchenaid Refrigerator Model #KSSC48FMS01

7 posts in this topic

I replaced the main computer board on this refrigerator almost 2 years ago.

 

Now, it looks like the same problems.

 

The freezer and f/f sections warmed up considerably. Then the freezer went

back down and reached 0 degrees. But, the f/f section is reading 46.

 

Also, last night he said the fan in the freezer was making alot of noise (high speed) sound.

 

Today, I found the freezer at 0 degrees and everything frozen and the f/f section at 46 on

the setting display and 43 on another thermometer the customer put in there.

 

Sounds like the main computer has taken a dump again.

 

Anybody disagree with that?

 

Thanks,]

Bruce

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Assuming the evaporator fan motor is working, is the air baffle open?  Did you check FF thermister?  If the freezer is at 0, there is plenty of cold air .... sounds like the air is not getting to the FF section. 

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Fan may be making noise if the Blades are hitting the overly-frosted Evaporator

due to a Defrost problem

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Yes, I understand both of you, but the day before yesterday everything was fine in both compartments.

Then yesterday it showed warming in both.

Today the freezer went back down, but the f/f didn't.

 

I see defrost could make noise the night before, but today it was normal and quiet.

 

Why would both work fine, then freezer warms up one day, then back down to freezing the next, but not the f/f section?

 

Seems abit erratic and undependable.

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I replaced the main computer board on this refrigerator almost 2 years ago.

 

 

 

 

If you didn't install a plugin surge supressor into the outlet the refrigerator plugs in to, then it is quite possible that the main control board has gone bad again. These boards, like all microprocessor boards, are very sensitive to surges and transients on the line and have been very problematic.  Whirlpool has stopped making these particular boards. 

 

Did you check FF thermister?  

 

Brother Strath raises a good point: I have seen noisy thermistors cause this type of problem.  Dunk the FF thermistor into a cup of ice water and check the resistance from it's harness connector back on the main board.  Should get around 8.8 k-ohms  and the reading should be steady.  Check the freezer thermistor while you're at it.  If the reading jumps around or if it's out of spec ±10%, replace it.  

 

Thermistor:  http://www.repairclinic.com/PartDetail/Thermistor/2188820/1057764?modelNumber=KSSC48FMS01

 

Thermistor-2188820-00680186.jpg

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could be that the Defrost is working, somewhat,

but if the Evaporator Coils are overly frosted,

due to not being evenly frosted

due to a sealed system leak,

or too much moist air entering the Freezer, etc ..

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Anything pop up in service diagnostic mode?

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