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You are very welcome.
Simon.
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So, I decided to replaced just the relay on the adc board because money was tight and that fixed my problem. Replacing the relay isn't as simple as it sounds unless you know what you are doing. Thanks for all the help guys. I'll definitely recommend people here. :)
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Hi.
I think, you are on the right track.
Post the results.
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I got the part today and decided to test the defrost thermostat one more time and it has continuity this time. So, I think that is not my problem now, but it is the ADC. I pulled the ADC out and could not find the Test pin. I have L1, Door, Stat, L2, Comp, and HTR in that order. I guess I'll return the heating element and order the ADC. =/
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Hello.
Below, please, find the info you've requested.
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I measured it again today and it is still zero. The evaporator coils and fins are all covered in frost again(i think more than normal). I already ordered the new defrost heater and temperature sensor. How can i verify that my adaptive defrost control is working properly without waiting to install the new parts? Thanks for all your help. :)
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[COLOR="DarkRed"]I noticed the evaporator coils are beginning to have some frost starting near the inlet hose. Is that normal?[/COLOR]
Yes. After a couple hours the frost should cover the evaporator coils as long as the unit does not go through a defrost cycle.
[COLOR="DarkRed"]
I also noticed that the frost is starting to move through the length of the coil. I guess it's the refrigerant cooling it down right?[/COLOR]
Correct.
The parts listing includes a wiring diagram. If you look at the defrost thermostat you will see it has a zigzag in it. This denotes a resistor so your 188 kohms is probably normal when the thermostat is open.
When closed (frozen) it should read 0 ohms.
It is probably frozen by now so check it again.
Holding it onto an ice cube should also freeze it.
If it is deformed (bulged) replace it even if it does measure OK.
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Hi Simon, thank you for the quick reply.
I ran the continuity tests. The heater element is about 22ohms, and the defrost thermostat(little round thing in the first picture above) is open. I don't know if it's ice cold though because I had just manually defrost the whole thing with a hair dryer and plugged it in about 20 minutes ago. I noticed the evaporator coils are beginning to have some frost starting near the inlet hose. Is that normal? I also noticed that the frost is starting to move through the length of the coil. I guess it's the refrigerant cooling it down right?
What's strange is that before you replied. I had measure the resistance of the defrost thermostat(while warm) and it was about 188kohms while the heater element is also about 22ohms. I also measured the fan motor resistance after defrosted it and it was about 3.0ohms. Thanks for the help.
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Hi. To check the defrost heater and defrost thermostat run the continuity test. The thermostat must be ice cold. The heater should show resistance and thermostat- continuity. If any of them open - replace the heater assembly. The heater assembly Part number: AP4069923
If heater assembly checks out OK - then you have a bad adaptive defrost control, located in the refrigerator top right rear under the cover. It's marked #13 on the diagram #2. The adaptive defrost control Part number: AP4070403
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Thanks Denman for the reply. The coils ARE frosted all over. How do I check to see what part of the defrosting system is not working properly?
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