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dnnismeredith

GE Select SSL27RGRCBS Defrost Problem

4 posts in this topic

Hello all,

 

I have a GE Select SSL27RGRCBS with a Defrost Problem.  It started out somewhaat intermittantly, but has gotten more regular in the past week or two.  I have searched the forum for other similar posts and answers and have a few questions.

 

I put the fridge into test mode by pressing the increase and decrease buttons on both the ff and freezer and am able to "manually" defrost.  I also ran the "control and system sensor self test" which shows P for 1-4 and 0 for 5 which to my understanding is that the freezer thermistor is bad (1 and 2 are ff thermistors, 3 is the turbo-cool thermistor, 4 is the evap thermistor, and 5 is the freezer thermistor).  Would the freezer thermistor control the defrost?

 

I also pulled the the motherboard out and visually inspected for a burnt spot by the fuse at the suggestion of a local appliance recycling center and there is no burnt spots visible.  While I had the motherboard accessible, I ohmed out the 4 pins for the thermistors and got the same readings (don't remember #'s)  on the 2 ff thermistors and the same readings on the evap and freezer thermistors.  Just after I found the identical readings on the thermistors, I put the fridge back in test mode and checked the sensors again with the same results as before (Bad Freezer thermistor). What else should I look for to solve my defrost problem?

 

Thanks for any assistance with this challenge.

 

 

Thank You,

Dennis

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Need appliance parts? Call 877-803-7957 now!

If it can't read the freezer temperature it may be running constantly and the coils getting heavily frosted. Check the thermistor in ice water for 16k ohms from the board. Also check both wires to ground, it may be shorted. It the thermistor checks good, you probably have a bad control.

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I believe that model has only (4) Thermistors,

(2) in the Freezer and (2) in the Fridge

and the test numbers are not correct...

ignore test # 5

 

Also, the Thermistor test may only show "shorted" or "open" Thermistors.

 

Do you have the "newer" style ?

 

http://fixitnow.com/wp/2010/06/30/ge-profile-and-arctica-refrigerators-upgraded-thermistors/

 

http://appliantology.org/blog/1/entry-337-how-to-properly-replace-the-thermistors-in-a-refrigerator-an-illustrated-and-annotated-guide/

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If it can't read the freezer temperature it may be running constantly and the coils getting heavily frosted. Check the thermistor in ice water for 16k ohms from the board. Also check both wires to ground, it may be shorted. It the thermistor checks good, you probably have a bad control.

Thanks, I'll try checking with ice water to see if it is 16K ohms.

 

 

 

I believe that model has only (4) Thermistors,

(2) in the Freezer and (2) in the Fridge

and the test numbers are not correct...

ignore test # 5

What is the order for the thermistors on the self diagnosis then?  According to other info I have seen it will show 0 for thermistor #3 if there is not a turbo cool  thermistor and my model does have the turbo cool option.

 

 

It does have the "newer" style thermistors and thanks for the link to proper replacement.

 

Thanks,

Dennis

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