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Kenmore (LG) french door Fridge Compressor wont come on. mod# 79577309600

kenmore lg french door no

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9 replies to this topic

#1 KCTBURY

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Posted 02 December 2012 - 06:27 PM

Refrigerator wont cool.

 

Everything works except the compressor won't come on

 

There is no power at the start device

 

What leads at the board do i check to see if board is sending power? (brand new board)

Does anyone have the service sheet? this ones missing!



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#2 RegUS_PatOff

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Posted 02 December 2012 - 07:02 PM

Is the Condenser Fan running ?

this should be similar

http://appliantology...idge-lrfc22750/


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#3 KCTBURY

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Posted 02 December 2012 - 10:32 PM

Yes the condenser fan is running.



#4 Cactus Bob

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Posted 02 December 2012 - 10:58 PM

if the compressor is a normal 120vac compressor and the start device is a normal PTC start device (not a 3ph inverter unit)

 

i would disconnect the compressors power wires and install a power cord to the start device just to test the compressor and the start device

 

run it for a while with the two plugins , makes sure it gets cold before going further


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#5 KCTBURY

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Posted 02 December 2012 - 11:29 PM

if the compressor is a normal 120vac compressor and the start device is a normal PTC start device (not a 3ph inverter unit)

 

i would disconnect the compressors power wires and install a power cord to the start device just to test the compressor and the start device

 

run it for a while with the two plugins , makes sure it gets cold before going further

 

 

Thanks for the reply I hooked up the compressor straight to the wall and the device and the compressor run fine.

 

 

 

The file that Regus posted was the correct one. (thank you)

 

Am i right in assuming that on con1 pin 1 and pin 5 should have 120 volts when in test mode1?

 

In the pictures uploaded the white (Pin1) and yellow (pin5) wires, or board markings comp (Pin1) and L (Pin5)

Attached Files


Edited by KCTBURY, 02 December 2012 - 11:38 PM.


#6 kdog

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Posted 03 December 2012 - 12:22 AM

The pin marked comp and neutral should get 120v during test.

 

Looks like pin 1 and3 (Black and White)

 

See page 23 of the manual for details on "test mode"


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#7 KCTBURY

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Posted 03 December 2012 - 03:04 AM

The pin marked comp and neutral should get 120v during test.

 

Looks like pin 1 and3 (Black and White)

 

See page 23 of the manual for details on "test mode"

 

 

ok yea they are getting 120v but down at the compressor where the wires come out of the bottom of the fridge there is no voltage.... im lost here ... do the wires go somewhere else between the board and the compressor?


Edited by KCTBURY, 03 December 2012 - 04:57 AM.


#8 KCTBURY

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Posted 03 December 2012 - 04:57 AM

Jumped wires from n to olp  and comp to start device and it runs fine.... assuming there is a broken or shorted wire inside the cabinet somewhere that I can't see? 

 

If anyone else has another explanation please chime in...



#9 kdog

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Posted 03 December 2012 - 09:00 PM

Try and measure the wires from end to end with an ohmeter, wiggle them around and see if it makes/breaks the circuit - broken wires are certainly not beyond the realm of possibility


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#10 kdog

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Posted 03 December 2012 - 09:06 PM

 

Looks like pin 1 and3 (Black and White)

I have to correct this, looking again I see it is pin1 (white - goes to capacitor) and pin 5 (yellow - goes to compressor overload.

 


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