Author Topic: L45-15 likely bimetal for GE SxS?  (Read 2002 times)

Offline archibald tuttle

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Re: L45-15 likely bimetal for GE SxS?
« Reply #10 on: July 16, 2013, 10:11:48 AM »
J1 pin 4 and 5 you should get a reading  if open bad evaporator thermistor.Thats the thermistor on top of the evaporator.You can cut it out and test it in a cup of ice and a little water with your ohm meter on the right scale and you should get about 16k ohms.If your meter is on wrong scale you will get wrong reading .I guess you got some reading from the other thermistors and the evaporator thermistor is not showing a reading.How about that heating element does it show some ohms.

thanks for note.  no, I'm showing infinite resistance across all the thermistors according to the pin out chart for the J1 connector. so I think I am not ohming across the right common wire maybe, as I think it is pins 2 thru 4 are the individual returns and 5 is supposed to be common, but since I'm getting infinite resitance from 5 to 2, 5 to 3 and 5 to 4 something macro must be up, not all bad thermistors is my guess unless some transient current could have melted them all in one fell swoop or something, but the fridge has been cooling fine so I think there is simply something wrong with my checking method although I tried all scales on my ohm meter and judging from the range in the table a 20K would be under but maybe show something depending on box temp or 200K ohms scale ought to be in the ballpark for most of the expected readings.


i feel like something is up with this testing protocol since I'm getting bad readings on all thermistors and the thing was working fine up until it frosted up. 

don't know of any macro electrical events that caused damage to anything else in the house and the board has no physical signs of damage or heating.  my current course of action will be to replace the bimetal and see if it works although I remain perplexed about the ohm readings and haven't been able to find a wire diagram beyond the helpful pinouts for the board posted on the GE SxS evap thread.
http://appliancejunk.com/forums/index.php?topic=9940.0

brian

Offline dab147315

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Re: L45-15 likely bimetal for GE SxS?
« Reply #11 on: July 16, 2013, 10:31:01 AM »
Yeah J1 pin 5 is common to all and thats were you put the black lead of your ohm meter and leave it there to check the others and the colors of the wires in the J1 don't matter just the positioning.Are you unplugging the J1 plug then using your meter.It would be unlikely that all thermistors are bad.I guess you saw the video at the other link i posted on testing thermistors?Maybe meter is bad or your not getting good connection i don't know want to tell you at this point.

Offline dab147315

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Re: L45-15 likely bimetal for GE SxS?
« Reply #12 on: July 16, 2013, 10:53:44 AM »
Also if your going to buy the defrost thermostat you may want to buy a thermistor and change the evaporator one as the thermistor is cheap to buy or you could also cut out the evaporator thermistor and direct test it with the ohm meter and at room temperature you should get about 5 thousand ohms and you could also reinstall afterwards.Also then use the ice bath to see if it raises to 16 thousand ohms.

Offline dab147315

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Re: L45-15 likely bimetal for GE SxS?
« Reply #13 on: July 18, 2013, 10:15:18 AM »
Let us know what happens with this.


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Offline dab147315

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Re: L45-15 likely bimetal for GE SxS?
« Reply #14 on: July 22, 2013, 07:54:56 AM »
Still waiting. I gave my time to help you at least post what results you had.


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Offline bobby93

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Re: L45-15 likely bimetal for GE SxS?
« Reply #15 on: July 30, 2013, 11:12:07 PM »
Dab, just wanted you to know, he posted separately a little further up in the forum. You helped him and he fixed it. Great Job helping him, even if he posted on the forum in a different location.


Just wanted you to also know, I am listening and learning from you all, about refrigerator repairs.


THANK YOU. from me.

Offline dab147315

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Re: L45-15 likely bimetal for GE SxS?
« Reply #16 on: July 31, 2013, 07:54:09 AM »
I saw that thanks.

 

Whirlpool defrost bimetal

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Last post August 02, 2010, 08:01:53 PM
by MajorApp