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self-defrosting refridgerator freezing up ?



 
 
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  #1  
Old July 17th 09, 03:19 AM posted to alt.home.repair,sci.electronics.repair
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Posts: 221
Default self-defrosting refridgerator freezing up ?

my self-defrosting (Fridgedair - upright and side by side)
fridge is freezing up on a weekly cycle. If i defrost the
**cooling coils** in the freezer manually on Monday the coils are
frozen/frosted up by the following Monday... essentially blocking
the cold air from going to the refridgerator side.

When i manually defrosted i measured the resistance of the heater
element going around the cooling coils at 19.2 Ohms ?

What could be possible conditions to cause such a problem ?

what sort of components or actions should i be doing to repair ?

helpful advice greatly appreciated.
robb

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  #2  
Old July 17th 09, 03:56 AM posted to alt.home.repair,sci.electronics.repair
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Posts: 91
Default self-defrosting refridgerator freezing up ?



robb wrote:
my self-defrosting (Fridgedair - upright and side by side)
fridge is freezing up on a weekly cycle. If i defrost the
**cooling coils** in the freezer manually on Monday the coils are
frozen/frosted up by the following Monday... essentially blocking
the cold air from going to the refridgerator side.

When i manually defrosted i measured the resistance of the heater
element going around the cooling coils at 19.2 Ohms ?

What could be possible conditions to cause such a problem ?

what sort of components or actions should i be doing to repair ?

helpful advice greatly appreciated.
robb

Robb,

the defrost cycle is controlled by a timer. When the timer fails the
defrost cycle does not start. Your timer may have failed.

HTH,
EJ in NJ
  #3  
Old July 17th 09, 03:58 AM posted to alt.home.repair,sci.electronics.repair
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Posts: 6,757
Default self-defrosting refridgerator freezing up ?


robb wrote:

my self-defrosting (Fridgedair - upright and side by side)
fridge is freezing up on a weekly cycle. If i defrost the
**cooling coils** in the freezer manually on Monday the coils are
frozen/frosted up by the following Monday... essentially blocking
the cold air from going to the refridgerator side.

When i manually defrosted i measured the resistance of the heater
element going around the cooling coils at 19.2 Ohms ?

What could be possible conditions to cause such a problem ?

what sort of components or actions should i be doing to repair ?

helpful advice greatly appreciated.
robb


The heater is probably fine. The defrost timer may be bad, you may also
have bad door seals that are letting in more moisture than the auto
defrost can cope with.
  #4  
Old July 17th 09, 04:05 AM posted to alt.home.repair,sci.electronics.repair
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Posts: 485
Default self-defrosting refridgerator freezing up ?

In years past, I had to replace the "defrost timer" twice


my self-defrosting (Fridgedair - upright and side by side)
fridge is freezing up on a weekly cycle. If i defrost the
**cooling coils** in the freezer manually on Monday the coils are
frozen/frosted up by the following Monday... What could be possible
conditions to cause such a problem ?

what sort of components or actions should i be doing to repair ?



  #5  
Old July 17th 09, 04:44 AM posted to alt.home.repair,sci.electronics.repair
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Posts: 113
Default self-defrosting refridgerator freezing up ?

In article ,
"robb" wrote:

my self-defrosting (Fridgedair - upright and side by side)
fridge is freezing up on a weekly cycle. If i defrost the
**cooling coils** in the freezer manually on Monday the coils are
frozen/frosted up by the following Monday... essentially blocking
the cold air from going to the refridgerator side.

When i manually defrosted i measured the resistance of the heater
element going around the cooling coils at 19.2 Ohms ?

What could be possible conditions to cause such a problem ?


My guess would be a bad defrost timer. As I understand it, these are
typically little timing motor bits, not all that unlike dryer timers,
that operate a defrost cycle every now and again, shutting off the
compressor and turning on the defrost elements for a spell.

what sort of components or actions should i be doing to repair ?


If it's the timer, replacing it would be the obvious correct repair (and
stands a good chance of being economical, to boot). Of course, if it's
an old fridge, you may be money ahead in the long term to get a new,
more efficient model instead, simply based upon electricity savings.

--
Andrew Erickson

"He is no fool who gives what he cannot keep to gain that which he cannot
lose." -- Jim Elliot
  #6  
Old July 17th 09, 06:22 AM posted to alt.home.repair,sci.electronics.repair
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Posts: 288
Default self-defrosting refridgerator freezing up ?

Hi!

What could be possible conditions to cause such a problem ?


As others have suggested, check the defrost timer. You will likely find it
at the bottom of the fridge, maybe even behind the little (mostly)
decorative "vent panel". While you're at it, test the door seals. The test
I've used is a dollar bill wedged between the metal and the door seal with
the door shut. There should be tension when you pull on the bill. If not,
you have a leaky spot in the seal.

The timer runs all the time, and you can advance it with a knob or by using
a screwdriver as a test. You should be able to cycle the compressor on and
off, as well as the heater. However, it's the compressor you will notice the
most.

The FAQ for this group suggests failures can occur if the timer gets cold or
the power goes out. Grease in the timer might harden to the point where the
timer can't run or parts break.

William


  #7  
Old July 17th 09, 12:07 PM posted to alt.home.repair,sci.electronics.repair
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Posts: 1,069
Default self-defrosting refridgerator freezing up ?

I had this happen to our fairly new Frigidaire. Element tested
ok, timer motor worked. It turns out a mouse? chewed through the
wire between timer motor and element. 6 or 8 wires in the bundle,
only chewed through the one.

Too bad the timer didn't activate the wire while he was chewing.

--
______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)




"robb" wrote in message
m...
my self-defrosting (Fridgedair - upright and side by side)
fridge is freezing up on a weekly cycle. If i defrost the
**cooling coils** in the freezer manually on Monday the coils
are
frozen/frosted up by the following Monday... essentially
blocking
the cold air from going to the refridgerator side.

When i manually defrosted i measured the resistance of the
heater
element going around the cooling coils at 19.2 Ohms ?

What could be possible conditions to cause such a problem ?

what sort of components or actions should i be doing to repair ?

helpful advice greatly appreciated.
robb



  #8  
Old July 17th 09, 02:24 PM posted to alt.home.repair,sci.electronics.repair
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Posts: 10,563
Default self-defrosting refridgerator freezing up ?

If it's the old style design, you may have a bad termination
thermostat, or a bad defrost timer. What I do, is to wait
till the fridge is badly frosted. Advance the timer into
defrost mode, and check the amp draw of the fridge. Defrost
heaters run about 5 amps. That helps you decide what parts
to change.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"robb" wrote in message
m...
my self-defrosting (Fridgedair - upright and side by side)
fridge is freezing up on a weekly cycle. If i defrost the
**cooling coils** in the freezer manually on Monday the
coils are
frozen/frosted up by the following Monday... essentially
blocking
the cold air from going to the refridgerator side.

When i manually defrosted i measured the resistance of the
heater
element going around the cooling coils at 19.2 Ohms ?

What could be possible conditions to cause such a problem ?

what sort of components or actions should i be doing to
repair ?

helpful advice greatly appreciated.
robb


  #9  
Old July 17th 09, 03:47 PM posted to alt.home.repair,sci.electronics.repair
external usenet poster
 
Posts: 1,253
Default self-defrosting refridgerator freezing up ?

On Thu, 16 Jul 2009 21:56:49 -0400, Ernie Willson
wrote:



robb wrote:
my self-defrosting (Fridgedair - upright and side by side)
fridge is freezing up on a weekly cycle. If i defrost the
**cooling coils** in the freezer manually on Monday the coils are
frozen/frosted up by the following Monday... essentially blocking
the cold air from going to the refridgerator side.

When i manually defrosted i measured the resistance of the heater
element going around the cooling coils at 19.2 Ohms ?

What could be possible conditions to cause such a problem ?

what sort of components or actions should i be doing to repair ?

helpful advice greatly appreciated.
robb

Robb,

the defrost cycle is controlled by a timer. When the timer fails the
defrost cycle does not start. Your timer may have failed.


there is also usually a defrost thermostat that turns off the heater
when the temp at the thermostat reaches a point above freezing. If the
thermostat is open, the heater never gets power, and it ices up.


HTH,
EJ in NJ

  #10  
Old July 17th 09, 04:27 PM posted to alt.home.repair,sci.electronics.repair
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Posts: 1,454
Default self-defrosting refridgerator freezing up ?

While the others are probably correct, you may need to check the fan in the
freezer area to make sure it is blowing.
That hapened to mine, but do not recall how long it took it to refreeze.

"robb" wrote in message
m...
my self-defrosting (Fridgedair - upright and side by side)
fridge is freezing up on a weekly cycle. If i defrost the
**cooling coils** in the freezer manually on Monday the coils are
frozen/frosted up by the following Monday... essentially blocking
the cold air from going to the refridgerator side.

When i manually defrosted i measured the resistance of the heater
element going around the cooling coils at 19.2 Ohms ?

What could be possible conditions to cause such a problem ?

what sort of components or actions should i be doing to repair ?

helpful advice greatly appreciated.
robb



 




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