Author Topic: Dead Bottom Mount  (Read 2999 times)

Offline tgoods

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Dead Bottom Mount
« on: September 14, 2010, 01:26:48 AM »
LG Refrigerator, LDC22720SW. Found a fuse mounted on the main control that was blown.  I jumped it out and expected to see fireworks or smoke or something.  But all it did was work.  When I first plugged it in it drew about 3 amps for a few seconds.  I assume that was a self test for the defrost circuit. Then when the compressor kicked on it was drawing about an amp. Obviously it needs the control replaced but what caused the fuse to blow.  I'm afraid if I just replace the control it will blow again.
Thanks,
T


Offline jumptrout51

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Re: Dead Bottom Mount
« Reply #1 on: September 14, 2010, 07:00:03 AM »
The closest diagtam I can find to your model shows 2 fuses.
Inline with L1 and another inline to the heater circuit.
Obviously your L1 fuse blew.
Could not find a amp value for the fuses.
It can't be too high.
Place your amp meter on the compressor circuit and check LRA. If it is near or at top end specs,could be a compressor going bad.
Of course it could have been a main service power surge.

The LG manuals found on Appliancedigest are a great help.
The troubleshooting refers to the main power fuse.
It simply says,No Power....replace the fuse.
« Last Edit: September 14, 2010, 07:07:13 AM by jumptrout51 »
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Offline schaffersapplian

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Re: Dead Bottom Mount
« Reply #2 on: September 14, 2010, 05:50:52 PM »
I have seen this before, I simply changed the Control board and all is well.  That particular customer did have a thunderstorm the day before.
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Offline RegUS_PatOff

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Re: Dead Bottom Mount
« Reply #3 on: September 14, 2010, 06:58:30 PM »
LG's use a Surge Suppressor (VR1) across the main power line.

The Fuse is designed to blow if there's a voltage spike on the main power line large enough to cause the Surge Supressor to clamp.

Replace the Fuse and check the operation of the Fridge.....
« Last Edit: September 14, 2010, 07:00:24 PM by RegUS_PatOff »
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Offline tgoods

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Re: Dead Bottom Mount
« Reply #4 on: September 14, 2010, 09:53:10 PM »
This fuse is soldered to the control board and doesn't look like it's meant to be replaced.  However, I got an idea.  I got a $2.69 inline fuse holder from Radio Shack.  I'll remove the fuse from the board and solder the holder leads in it's place.  Then we'll have a replaceable fuse.
Thanks,
T

Offline Icehouse

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Re: Dead Bottom Mount
« Reply #5 on: September 16, 2010, 03:44:23 PM »
 :) Recommend a GFCI outlet, it may avoid futre problems.
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Offline AJ

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Re: Dead Bottom Mount
« Reply #6 on: September 16, 2010, 07:09:58 PM »
This fuse is soldered to the control board and doesn't look like it's meant to be replaced.  However, I got an idea.  I got a $2.69 inline fuse holder from Radio Shack.  I'll remove the fuse from the board and solder the holder leads in it's place.  Then we'll have a replaceable fuse.
Thanks,
T

Did you get the fuse replace?
Did that repair the problem?
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Offline tgoods

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Re: Dead Bottom Mount
« Reply #7 on: September 17, 2010, 03:32:26 PM »
I went back this morning and soldered on the new fuse holder.  At this point it's working good.  They're going to give it a few days before they load it back up.
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Offline AJ

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Re: Dead Bottom Mount
« Reply #8 on: September 17, 2010, 03:57:18 PM »
Glad to hear that it worked. Thanks for the update and photo.
Hope you find our site helpful.

 

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