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vunger1

SxS Whirlpool compressor really hot / model ed56hgxmb00/

15 posts in this topic

this side by side Whirlpool unit is cooling fine, condenser coils are clean,(i bought this used to resale) someone has put access valves on the high and low side, so i know that the system has been tampered with. I put my guages on the low side and showed a consistant 2 psi over a couple of days.I checked start and run windings on compressor (resistance) all good there.I also checked for continuity to the compressor casing , no problems found. Amp draw test shows (1.86 amps) on start  winding and the same on run winding , 0 on common(this is measuring the 3 wires at the compressor as i have installed a 3 in 1 hard start . Also evaporator coils have full frost pattern with no frost/ice blockage.

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Double check that model number.  Probably would be best to replace that 3n1 with the proper relay and overload to protect the compressor.

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correct model ed5ghgxmb00


What is the no no about 3 n1

Edited by vunger1

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It has a start capacitor which can burn up the compressor and also provides no overload protection for it.

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Good frost pattern.  Replace that 3n1 with a Klixon relay and overload and compressor should run at normal temps.

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Good frost pattern.  Replace that 3n1 with a Klixon relay and overload and compressor should run at normal temps.

How does a 3 n1 make a compressor run hot after startup. I am asking from a position of ignorance , as i am new to sealed system work. Looking for all the info i can get.

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It's in the design.  Even if the 3 n' 1 is strapped to the case of the compressor, it's just not sensitive enough to read the temperature of the winding.  The bi-metal type overload that is used with the Klixon type relay is designed for these compressors clips directly on the terminal, allowing it to better sense the heat or amperage draw from excessive compressor run time.

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It's in the design.  Even if the 3 n' 1 is strapped to the case of the compressor, it's just not sensitive enough to read the temperature of the winding.  The bi-metal type overload that is used with the Klixon type relay is designed for these compressors clips directly on the terminal, allowing it to better sense the heat or amperage draw from excessive compressor run time.

So you have overload protection, with oem Klixon type relay. But what does a hard start do that makes a compressor run hot, during the course of normal run time?

why would the compressor in my case be so hot, with good frost pattern, normal amp draw, and good ohms readings on the windings?

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It has a start capacitor which can burn up the compressor and also provides no overload protection for it.

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It has a start capacitor which can burn up the compressor and also provides no overload protection for it.

 

Ok so the start capacitor on the hard start, apparently stays engaged and puts too much current to the start windings and these windings are always energized if the compressor is running?

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If you wire a 3-n-1 to a good Compressor,

and can use the original Overload device,

they may be OK.

 

I don't know if all 3-n-1 start Relays use Start Capacitors.

I don't know if they are all called "Hard Start Kits"

Mainly used on "already bad", "dying"  Compressors as a last resort while shopping for a new Fridge

 

There are also solid-state Start Relays (they are OK)

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Here's the start device kit you need, works with lots of other models, too.  I keep two of these kits in the The Guru Mobile and a backup kit on the parts shelves in my garage:  http://www.repairclinic.com/PartDetail/Start-Device/8201786/1177466?modelNumber=ED5GHGXMB00

 

Start-Device-8201786-01023086.jpg

 

 

Here's using it in live action!

 

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