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Sub 550 refrigerator not cold enough  Rate Topic 
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 Posted: Wed Jul 7th, 2010 10:04 am
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johnd393
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Frig varies 45 - 50 d. Freezer is ok. Here's what I found so far. Compressor and condenser fan are running. The compressor current is too low to register on my clamp on current probe.
The door had sagged so that the refrig fan switch was not making. It may have been like this, or intermittantly,  for a while.  I adjusted the bottom hinge, to raise the door, so the frig fan works. It's still running a long time. It got down to 42f once. Could the evaporator be iced up from running with no fan?
I don't know how to get into the evaporator to visually check it. I turned the cold control up warmer to get it to stop running so the evap could thaw out, if it is froze. At 55d I turned it colder  It's 51 degrees right now and the temp drops very slowly. The thermometer probe is right below the frig fan.

It's been making a noise sometimes lately like short bursts of a chattering relay, but it hasn't done that while I'm looking.

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 Posted: Wed Jul 7th, 2010 04:34 pm
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applianceman18007260692
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Maybe ice is blocking the air inlet since the door was left ajar or some time. I would let it all thaw out completely.



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 Posted: Wed Jul 7th, 2010 09:40 pm
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johnd393
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It's down to 39 degrees. I'm hoping it will eventually stop and give itself time to thaw. I'm gonna give it plenty of time before I shut it off or take anything apart. I could measure the pressure but, if it is iced up due to the frig fan not running, I think, the pressure might be wrong anyway. It's got R134 in it.

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 Posted: Thu Jul 8th, 2010 09:13 am
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johnd393
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I shut the frig off and left it open for 6 hours so any ice could thaw. Not much water dripped out. I put a gauge on it and started it up and it pumped down to 10mm hg vacuum. I added some refrigerant and it's cooling. Don't know how long it will last.

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 Posted: Wed Oct 12th, 2011 05:26 am
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johnd393
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It's been over a year and the frig is still cold but ice is forming on the left side of the evaporator so, apparently, it's getting low on r134 again.

Can a leak that slow be located? What kind of leak detector do I need?

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 Posted: Mon Oct 17th, 2011 06:24 pm
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