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Frosted evaporator coils; warm fridge

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Frosted evaporator coils; warm fridge ATL 01-15-2007
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Posted by DK on January 16, 2007, 1:28 am



>BobK207...the water fell into the catch pan located directly under the
>coils, which are in an upright position in the back of the freezer.
>The water then drained down to the evaporator (?) pan under the fridge.
> So, the drain line is clear. How would I remove moisture from the
>system?
>
>The fella at Earthlink...thanks for the info. I came home during lunch
>to check the fridge and I noticed the ice trays on the bottom had not
>completely froze. I wondered if the panel needed to be in place for it
>to work properly, but didn't know for sure. I will try to manually
>make the defrost timer initiate a defrost cycle tonight. Just
>wondering though, what is it that makes you think the heater itself or
>the switch is causing trouble? How would you know?
>
>DanG...thanks to you too, but from looking at my diagram I would say
>the coils are the wrapped sheets, for lack of a better description.
>They would be very hard to get to without removing them from the unit.
>Thanks again, though. I appreciate all responses that offer genuine
>help.
>
>Thanks again,
>ATL

Sounds like moisture is coming from a leaky door gasket or the door
is misaligned or something is blocking it.


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Posted by ATL on January 16, 2007, 12:31 pm


Here's an update...

I manually turned the defrost timer to initiate a defrost cycle. The
compressor turned off as expected. An hour later the compressor had
not come back on, i.e. the fridge was still in defrost mode. I did not
notice any reduction in frost on the coils. Does this help to narrow
problem possibilities? Can we say the defrost timer is bad? Or can it
mean the heater element is bad or the defrost terminator or defrost
thermostat is bad (not sure if terminator and thermostat are the same)?


I've already started looking at some used refrigerators, but I am
posting this just in case someone can tell it's a simple repair that
I can do.

Thanks again,
ATL


Posted by Chris Hill on January 15, 2007, 6:34 pm




>the thermometer shows b/n 20 and 30 degrees like before. The fresh

That may seem normal to you, but it isn't good. A freezer should be
around 0.

>food section thermometer shows just below 40 degrees, which is normal.
>The frost on the evaporator coils is again fairly thick, but not quite
>to the top of the coils yet. BTW, I did not reinstall the metal
>cover/panel in the freezer. I reinstalled only the plastic cover that,
>I guess, helps deflect air into the fresh food section.
>
>I have never noticed when the compressor was on since I've been around
>this refrigerator. But it does sound like it is running all the time,
>but I am not sure of that. I can say the fan inside the freezer is
>always running when I open the freezer door since this problem started
>yesterday. I honestly don't remember if it was running every time I
>opened the freezer before.
>
>So, my question is, is it normal for frost to build up on the
>evaporator coils so quickly? I was thinking such a quick buildup meant
>low freon levels. I read in other posts that it could be either a
>Defrost Thermostat or a Defrost Timer. I have located both on eBay for
>around $10 each. I was hoping that was going to be the problem, but
>seeing such a quick buildup of frost made me think that the problem may
>not be the defrost thermostat or timer. Since there is a panel
>covering the coils, I just don't know how much frost is normal.
>
>The history of the refrigerator is this. We rent this house. The
>refrigerator was here when we moved in. We did not have fridge, so our
>landlord agreed to let us use it with the understanding that if
>anything happens to it we would be responsible. We've lived here five
>and a half years.
>
>Thanks in advance for suggestions, opinions, etc.

My guess is low freon. Probably not worth fixing.


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