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evaporator fan works intermittently

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Hi, I have a Hotpoint fridge which has run into some trouble recently. I put down 5-10 years in the

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  #1 (permalink)  
Old 12-26-2010, 12:02 AM
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Default evaporator fan works intermittently
Model Number: CTHY14CRLLWH   Brand: Hotpoint   Age: 5 - 10 years   

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Hi,

I have a Hotpoint fridge which has run into some trouble recently. I put down 5-10 years in the age field, but the truth is I actually don't know how old it is: I'm a tenant, and the fridge was here when I moved (Aug 20 2009).

I recently noticed that the fresh food section was too warm, even though the freezer seemed fine. After some digging around on forums like this one, I unplugged it, broke the ice covering the air duct between the freezer and the fresh food section, and it was fine for about 2 days (that was Thursday, and now it's Saturday). Today, I noticed that even though the condenser fan was working, the evaporator fan wasn't. I took out the freezer panels to expose the fan, and noticed that it will start if I give it a nudge (sometimes it needs a pretty forceful nudge).

I'm thinking there might be something wrong with the motor, or I may have just loosened some contacts or something when I worked on it the other day (it's certainly an odd coincidence that both problems should occur within such a short span). I did some more digging and learned that I should check the evaporator fan motor with a multimeter. The problem is that I don't have a multimeter, and I have to go at least one more day without one, since stores don't open until Monday. Any suggestions? I'm going to do all that checking Monday when I get my hands on a multimeter, but I wanted to have some first opinions..


Thank you


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  #2 (permalink)  
Old 12-27-2010, 04:40 AM
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Probably bad motor bearings. To confirm, pull it out and stick 15 volts to it. If it fails, get a new one here AP2071899
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Old 12-27-2010, 03:25 PM
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Thanks, but I'm quite illiterate in these matters . How would I do that, exactly? Chances are, I won't have everything I need handy.. Here's what I did do: I got a multimeter today, and the resistence test seems to be fine: I get 0 ohms when I touch the two terminals of the motor with the probes. I was almost hoping I wouldn't .

I actually did order the motor (placed the order yesterday, Sunday Dec 26) because I was expecting it would fail eventually, but now my problem is that the motor I see in this picture is not identical with the one I have.. I can see three terminals for the one in the picture. Mine also has three wires: something that seems to be a red wire + an orange one both ending in one connector, a black one that ends in another connector, and a green wire that splits into two connectors. So I'm probably going to have some trouble replacing it once it gets here.


P.S. I keep forgetting to mention this: the fan blades do not seem to be spinning freely. At least, I would have thought it would be easier. They are rather hard to move; if I give a small nudge, they will barely rotate 90 degrees.


Thank you

Last edited by grobber : 12-27-2010 at 04:30 PM.
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Old 12-27-2010, 04:42 PM
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Since it doesnt turn freely, for a fast fix, spray the bearing on each end (where the shaft penetrates the housing is a bearing) with wd 40. Keep spinning it until it turns fairly freely, put it bag in, plug it up and see if it takes off on its own. If it does, the winding are ok and no need to do a check with a meter. For a more permanent fix, take the motor apart, clean the bearings with a solvent such as mineral spirits, pack with a bearing grease or similar, re-assemble and put back in. I have done this quite often with these types of motors with good luck.
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Old 12-27-2010, 08:29 PM
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Thanks, joep. Having more solutions available is always good news. I think I'm going to try changing the motor though, since it's on its way anyway. It's supposed to arrive tomorrow. I'd try the WD-40 right away, but I don't have any; by the time I get some tomorrow, the motor will probably have arrived.

Thanks everyone for your speedy replies. If it doesn't work out, I'll certainly be back to complain .


Thanks again
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Old 12-28-2010, 02:28 AM
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Oiling a bad motor is a bad idea, eventually, the oil will leave the worn bearings and cause another failure without warning. Also, you must use special light, non detergent turbine oil that will not gum up at freezer temperatures available in a plastic bottle with zoom spout part 55191
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Old 12-28-2010, 07:35 AM
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Also, how do I remove the fan blade from the motor? I tried pulling onit, but it will not budge..


Thank you



Edit: Never mind this last question; I figured out I was supposed to first remove this metal ring that keeps the blade attached to the motor shaft.

Last edited by grobber : 12-28-2010 at 08:02 AM.
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Old 12-28-2010, 09:39 AM
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The new motor arrived, I just changed it, and it took off. So I'm (provisionally) happy .

A quick question, out of curiosity: does it matter which way you attach the fan blade to the shaft? Because the fridge seems to have been worked on before, and I think the blade was put on "the wrong way". I placed it in the correct position now (with the metal ring that's supposed to hold it tight against the shaft facing away from you as you peek into the freezer), but will it make a difference?


Thank you

Last edited by grobber : 12-28-2010 at 06:11 PM.
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Old 12-29-2010, 01:39 AM
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The fan blade is cupped to cup and fling the air efficiently, so it must turn that way, if not reverse the fan blade.
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Old 12-29-2010, 04:59 AM
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Actually, it turns out I'm the one who put it on the wrong way . I'll reverse it.


Thanks so much for all the advice guys.
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