Fridge side is warm,no air flow from freezer

Refrigerator & Freezer Repair
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1

Hi. I have a model JSD2789GES Jenn Air side by side refrigerator freezer unit. The refrigerator side is warm and there was no air flow going from the freezer side to the fridge side. I took the panels off the inside back off the freezer compartment to expose the evaporator coils. The compressor is working; the coils are very cold and keeping items in the lower part of the freezer section frozen solid. And the defrost circuit appears to be working: I get a small amount of frost on the coils and a little while later the frost build up will be gone. But, the little fan that sits directly above the evaporator coils has not run at all during the two days that I’ve been troubleshooting this problem. I assume this is the fan that blows the cold air to the upper freezer section and over to the refrigerator section. Even when I took the demand slide for the refrigerator section to a colder temperature setting, the evaporator fan did not run. The little fan blade will spin by hand. Now my questions. (1) Is there any way to verify that the fan motor is bad or good? The whole motor appears to be encased in ceramic. I’m not sure if it runs off straight 110 volts or if it’s stepped down or if it’s run off DC. I’d love to be able to know if the fan motor is bad or not. (2) If the fan motor is good, than whatever tells that little fan to run must be the problem. What sends the signal to the evaporator fan to run , where is it located and how do I check to see if it is the cause of my problem? My name is Scott and I would really appreciate any and all help that anyone can provide. Thank you in advance for your assistance.

2

Thanks for your reply. I checked the resistance across the motor and came up with a value of 700 K ohms. I thought this was rather high for such a small motor. What would a reasonable value be, and is this indicative of motor failure? Thanks again for your help.
Scott

3

It looks very high. I believe it should about 200 Ohms. The motor is bad. No doubt about it.

Gene.

4

Thanks very much! I’ll replace the motor right away!

Scott