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GE Defrost

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30 replies to this topic

#1 Oceti

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Posted 12 May 2013 - 05:55 AM

Does anyone have a tech manual for m# GFSF2KEXABB ?

 

Another company replaced the defrost el and the bi-metal. 5 days later the cust. called me and I found a burnt mother board and a bad thermister. Replaced them. the refer still frost up. HELP!!!

 Thanks in advance,

Oceti


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#2 DurhamAppliance

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Posted 12 May 2013 - 06:31 AM

Where is the board burnt?....Did you check evap fan motor? If the fan doesn't turn, the evap will build up frost as the air is not circulating, giving the appearance of a defrost problem. Remember, a bad fan motor can take out a board on a GE fridge

 

 

manual http://appliantology...-refrigerators/  covering models GBSC0 GFSF2 GBSC3 GFSL2 GDSC0 GFSS2 GDSC3 PDSF0 GDSL0 PFSF2 GDSL3 PDSS0 GDSS0 PFSS2

 


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#3 Oceti

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Posted 12 May 2013 - 07:17 AM

The evap fan is fine. The fane has a diode in it. This may be the problem. The board is burnt on R43.

Thanks for your reply,

Oceti


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#4 DurhamAppliance

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Posted 12 May 2013 - 07:45 AM

R43 is the evap fan motor resistor.....GE specifically says if that resistor is burnt, replace the evap fan motor and the mainboard. If you put another board in the fridge without changing the fan motor, you will fry the new board  as well.  Let me add to my previous post, the fan may turn and appear fine upon inspection but may have destroyed the defrost function of the board


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#5 Samurai Appliance Repair Man

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Posted 12 May 2013 - 08:17 AM

R43 is the evap fan motor resistor.....GE specifically says if that resistor is burnt, replace the evap fan motor and the mainboard. If you put another board in the fridge without changing the fan motor, you will fry the new board  as well.  Let me add to my previous post, the fan may turn and appear fine upon inspection but may have destroyed the defrost function of the board

 

 

Nailed it!  Nice shootin', Brother Durham!  

 

Evaporator fan motor:  http://www.repaircli...ber=GFSF2KEXABB

 

Muthaboard:  http://www.repaircli...ber=GFSF2KEXABB

 

 

 

 

The fane has a diode in it. This may be the problem. 

 

That's not a diode, it's the evaporator thermistor.  It would not / could not cause this problem.  The fan motor is shorted internally and fried the muthaboard, taking out R43.  



#6 Oceti

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Posted 12 May 2013 - 08:27 AM

Thank you. I was told that thay  corrected tiis problem on the new refers, but I never saw the data sheets on it. New board and fan are ordered.

Big time thanks,

Oceti

 

PS

I would still like a tech manual if anyone has one for my library.

Thanks agan,

oceti


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#7 DurhamAppliance

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Posted 12 May 2013 - 08:29 AM

tech manual in my first post


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#8 DurhamAppliance

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Posted 12 May 2013 - 08:34 AM

Nailed it!  Nice shootin', Brother Durham!  

 

Evaporator fan motor:  http://www.repaircli...ber=GFSF2KEXABB

 

Muthaboard:  http://www.repaircli...ber=GFSF2KEXABB

 

 

 

 

 

That's not a diode, it's the evaporator thermistor.  It would not / could not cause this problem.  The fan motor is shorted internally and fried the muthaboard, taking out R43.  

If that's the case ...would he need the fan with the thermistor....if in fact, his thermistor is part of  the molex connector, something i don't think I have seen in a bottom mount.   Although this particular fan is not covered in the discussion, see http://appliantology...ith-thermistor/


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#9 Samurai Appliance Repair Man

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Posted 12 May 2013 - 08:43 AM

If that's the case ...wouldn't he need the motor with the thermistor, despite what the diagrams show?

 

 

Ruh row, here we go again!  Is this another case of a screwy parts database and not knowing which fan is really there until you get eyeballs on it?  http://appliantology...ith-thermistor/

 

 

Re-reading that topic, I see the fan motor I linked to for this model  is different from either of the motor discussed in that other topic.  And that's the motor that pulled up in the RC database for this model.  So... Imma ax Oceti

 

@Oceti: does the linked fan motor look identical to the one you're replacing?



#10 DurhamAppliance

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Posted 12 May 2013 - 08:49 AM

I don't think I've run into a bottom mount with the thermistor attached....but hell, there's so many frickin versions of what are supposedly the  same GE's it's hard to tell.


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#11 Samurai Appliance Repair Man

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Posted 12 May 2013 - 08:51 AM

Yeah, I was taking a shot in the dark saying that was the thermistor he was seeing cuz I was ASS-U-MEing that's what it had to be.  Then I took a closer look at the RC part photo and saw there's no thermistor there.   :wacko:



#12 DurhamAppliance

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Posted 12 May 2013 - 09:09 AM

Yeah, I was taking a shot in the dark saying that was the thermistor he was seeing cuz I was ASS-U-MEing that's what it had to be.  Then I took a closer look at the RC part photo and saw there's no thermistor there.   :wacko:

but that means  he ordered the right part...that's what really matters....curious though about the diode thing.


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#13 Samurai Appliance Repair Man

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Posted 12 May 2013 - 09:17 AM

curious though about the diode thing.

 

Me, too!  Hey, Oceti, can you unwrap the foil on the old one take a photo and post it here so we can see what's inside?  



#14 Oceti

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Posted 15 May 2013 - 06:11 AM

The fan and muther board will be in today. I'll post the progresss.

Thanks,

Oceti


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#15 Oceti

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Posted 25 May 2013 - 07:29 AM

 Hello again. All the parts were replaced and it still is iced up. When I went into the self-diognosis test the display will not respond. Could this be the problem?


Edited by Oceti, 25 May 2013 - 07:34 AM.

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#16 jkirksey1889

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Posted 25 May 2013 - 08:41 AM

 Hello again. All the parts were replaced and it still is iced up. When I went into the self-diognosis test the display will not respond. Could this be the problem?

 

By the way you wrote this I have to ask, did anyone ever manually defrost the coils? 



#17 Oceti

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Posted 25 May 2013 - 08:46 AM

We have defrosted 4 times, Low temp with a wet dry vac. This takes a little longer but it keeps the heat out.


Edited by Oceti, 25 May 2013 - 08:51 AM.

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#18 DurhamAppliance

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Posted 25 May 2013 - 08:53 AM

Was the evap thermistor tested/replaced?

 

I do not believe the user interface on your model has anything to do with the defrost function. You definetly needed a new board and fan motor. Why your interface is not allowing diagnostic mode may be altogher a different issue...make sure your connectors on your main board are seated properly. Also check all thermistors but particularly the freezer evap thermistor.


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#19 Oceti

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Posted 25 May 2013 - 09:00 AM

Yes


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#20 Samurai Appliance Repair Man

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Posted 25 May 2013 - 09:01 AM

And the defrost heater and limiter both have continuity?






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