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You are correct I took that heater part to a repair shop and they told me the same thing, that part does not effect the coils or defrost system. So back to where were at I tested all things connected to and around the coils and they all showed either continuity or resistance. What are the next steps? What else can I test?
You mentioned step 8 in the manual to force into defrost mode but I can't get my the manual to load to page 8.
Thanks
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I do not know where I came up with Page 8, it should be page 30.
Here is a work around to get into the manual which should work.
Click on the link.
Let the manual load into a tab or page
Then "Save As" the manual to a folder or desktop on your computer.
You should then have no problem viewing the saved .pdf file |
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O.K. I tried something different, I did the self diagnostics test on page 32 of the Manual and my number 3 light came on. The error on the chart says it is the REFRIGERATOR DEFROST SENSOR, you can view the details of the error on page 32. So what exactly does this mean for me, where is the defrost sensor located? what all would need to be replaced? How do I test this other than the self-diagnostics? If this is the defrost sensor it is referring to http://www.appliancepartspros.c...t_id=4136842&image=0 #45 on diagram 10. I tested it and it is showing about 20 ohms. Thanks Again
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I think you are on to something!!! where is the defrost sensor located? Take a look at Page 17 Evaporator in Refrigerator
what all would need to be replaced?
Just the sensor from what I can see
How do I test this other than the self-diagnostics?
I tested it and it is showing about 20 ohms. Look on Page 62 it has a chart for temp/resistance of the sensor Note that all the readings are Kilohms So at 20 ohms the unit thinks it is probably around 200 degrees F Therefore the defrost would never come on. If this is the defrost sensor it is referring to http://www.appliancepartspros.com/pa...136842&image=0 #45 on diagram 10. Looks like a thermistor to me, you will know for sure when you remove the old one |
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O.K. it looks like were making some progress now, but I am a little confused with your last reply. 1. I looked at page 17 but that does not tell me where the sensor is? 2. Yes you are correct, according to the picture on page 17 this http://www.appliancepartspros.c...t_id=4136842&image=0 is the Thermistor. 3. IS THE THERMISTOR THE SAME AS THE DEFROST SENSOR, IS THIS THE ITEM THAT NEEDS REPLACED? If not, where exaclty can I find it as I do not see it in the image on page 17 By the way, you probably already know but that image on page 17 is exactly what I have in my fridge. Thanks
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1. I looked at page 17 but that does not tell me where the sensor is? I think this is labeled as Thermistor in the picture
2. Yes you are correct, according to the picture on page 17 this http://www.appliancepartspros.com/pa...136842&image=0 is the Thermistor. I think so 3. IS THE THERMISTOR THE SAME AS THE DEFROST SENSOR, IS THIS THE ITEM THAT NEEDS REPLACED? Yes, I think so. I have not actually worked on one of these so am guessing a bit. But the thermistor you measured is definitely shot so I am assuming it is the part that requires replacing. |
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O.K. before I order this part, all of the readings were with the fridge turned off, and the coils at room temperature. Obviously
1. When you say the sensor at 20 ohms is reading 200 degrees, Should I test this part after letting the fridge run for a while and allowing the sensor/coils to get cold? Would that make a difference?
2. I tested one of the other wire harnesses and it is reading 90 ohms(when the meter is set on 200 and the fridge is off)? I am not sure what this piece is called but you can find it in the image on page 17. It is on the upper right side of the coils. There is a black rubber piece that covers part of the coil it loops up and comes down and has a red wire coming out of the bottom and also has a white wire that goes into the harness that runs down the right side of the coils. In the image this piece it is directly under the "E" in the WORD Capillary Tub"e".
Does the 90 ohm reading on this seem correct at all?
Thanks
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Update:
I have tested the components with the fridge on.
1. The thermistor/sensor that was reading 200 degrees with the fridge off, seems to be working fine I tested it twice after the fridge ran for a while first time was 135 ohms, second time 155 ohms, which according to the chart shows the temperature between 24-32 degrees, which should be correct.
2. Also in the image on page 17 it says thermal fuse on the right hand side? The arrow sorta points to the coils but I assume it is referring to the piece that runs down the right side and has a wire harness that plugs in, it has one red and one black wire. This was also tested, it showed .5 ohms
3. I then tested the part that is explained in question 2 of my last post and it read about the same 90 ohms. Is this the heater that is built into the coils?
I am still getting the blinking number 3 led when starting up the fridge, which according to the manual indicates a problem with the refrigerator defrost sensor.
Any ideas where to go from here?
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Did not see your last post.
I will have to sit down and go over the manual again. |
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First just a check on how you rae doing the resistance checks. When measuring for resistance you must:
A. Have power off, otherwise you can blow your meter.
B. You have to disconnect the device you are measuring or at least disconnect one side of it. This eliminates the possibility that you are reading an alternate/parallel circuit path.
1. 135 ohms, second time 155 ohms, which according to the chart shows the temperature between 24-32 degrees, which should be correct.
To me the chart on page 62 is showing readings in Kilohms not ohms
2. Also in the image on page 17 it says thermal fuse on the right hand side? This was also tested, it showed .5 ohms
This looks OK to me. It is always a good idea to short your meter leads together before doing resistance measurements. This will tell you where the meter's real/true zero is. It is not uncommon to have some offset.
3. I then tested the part that is explained in question 2 of my last post and it read about the same 90 ohms. Is this the heater that is built into the coils?
Yes I think it is the heater.
I could not find a spec for it in the manual so would have to say that 90 ohms is probably OK.
Any ideas where to go from here?
Sensor still looks bad to me.
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