Rank: Member
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Joined: 4/22/2014(UTC) Posts: 1
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So, the upright freezer died. It attempts to fire up for a few seconds, then click-dead for a few minutes, lather, rinse, repeat ;)
- Read a LOT, then opened it up and took a look.
- R12 1/4 HP compressor, simple relay+overload, no cap at all.
- Overload has continuity
- Relay measures "upside down" to what I've read (open vs closed) and rattles some but otherwise seeeeeems ok.
- Compressor: first time I tested, it did show same resistance on the two windings with a sum of both for the final side. Seems good.
Unfortunately, the Overload is no longer available. Thought about using a PRO410 (or maybe 3n1? Will the cap hurt anything?) at least to see if it can be made to work. Then I read somewhere about testing the power draw while it is attempting to start. So, hooked up my Kill-A-Watt and re-ran some tests: It pulls around 10 amps (120VAC) while starting After trying that a couple of times, I retested the resistance across the compressor terminals. A very different picture now: one winding measured 3 ohms, one 7, and just above 7 for the 3rd. When I get home tonight I will remeasure (with everything cooled down) to see if anything changed. Here's my question: could it be anything other than the compressor? If so, it's worth trying. Why toss $200+ down the drain? However, if we're sure it's the compressor, I don't need to waste time and money. My sense: 10A is too much draw even for inrush current. BUT I don't know compressors. Could there be a problem such that enabling it to run full blast for a bit could "clean out" the windings or something? Your thoughts mucho appreciated! Pete
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Rank: Advanced Member
Groups: Senior Expert
Joined: 2/29/2008(UTC) Posts: 19,638
Thanks: 1 times Was thanked: 11 time(s) in 11 post(s)
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When I enter the model number you gave without the dashes in it the start relay comes up not a fridge. Please check the model number.
I will then try to get you some tech info.
[COLOR="Blue"]After trying that a couple of times, I retested the resistance across the compressor terminals. A very different picture now: one winding measured 3 ohms, one 7, and just above 7 for the 3rd. When I get home tonight I will remeasure (with everything cooled down) to see if anything changed.[/COLOR] The above definitely points to a bad compressor. No matter what the temperature the two windings should add together to give you the third reading. Seems there is a winding to winding short in the compressor. Could be it only shows up when the unit is hot but may also happen when working voltage is applied to the compressor. |
THIS FORUM IS DEAD!!!!!!! |
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