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Bosch refrigerator B20CS50SNS-01 defrost timer

defrost timer B20CS50SNS-01

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3 replies to this topic

#1 kapes_kp

kapes_kp

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Posted 23 May 2012 - 08:47 AM

Hi,
I have a defrost system problem with my Bosch side by side refrigerator. Freezer cools but not the refrigerator. If I go through manual defrost, refrigerator stays cool for a couple of weeks. Going through your blog, I understood it is the defrost system problem. I want to diagnose and replace the parts. But I'm not able to locate the defrost timer on it. I looked at the diagrams in Sears parts wesite and could not locate it either. Can you please guide me where and how to find the defrost timer on this fridge? It would also be helpful if you can guide me on how to replace the thermostat and/or defrost heating coil if they turn out to be faulty.

-Kapes_kp

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#2 RegUS_PatOff

RegUS_PatOff

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Posted 23 May 2012 - 09:12 AM

Defrost and Temperatures are controlled by the electronic controller board
I don't have a service manual for that model
maybe someone else does
http://www.repaircli...tDetail/1387057

 


Part number: 640603

Part number: 640603


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#3 kapes_kp

kapes_kp

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Posted 23 May 2012 - 10:53 AM

Should I just replace the circuit board then? How do I check if the heater and thermostat are working properly?

#4 Samurai Appliance Repair Man

Samurai Appliance Repair Man

    Shōgun

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Posted 24 May 2012 - 07:23 AM

You'll the wiring diagram so you can determine which pins on the board to use to check sensor resistance and heater continuity. If you have it, post it here or fax it to me at 866-315-4504.

Or just replace the control board. If it doesn't fix the problem, return it for a refund.




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