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I am working on this air conditioner, the compressor continues to run with the unit turned off. What could be

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  #1 (permalink)  
Old 06-02-2011, 03:00 PM
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Default LG Window Air Conditioner
Model Number: LWHD2500ER   Brand: -brand-   Age: 1 - 5 years   

Appliance Parts from AppliancePartPros.com


I am working on this air conditioner, the compressor continues to run
with the unit turned off. What could be the problem?


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  #2 (permalink)  
Old 06-04-2011, 09:55 AM
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Here are your parts
Replacement parts for LWHD2500ER models | AppliancePartsPros.com

Here is a service manual
LG LWHD2500ER 25,000 BTU Window Room Air Conditioner Service Manual - ApplianceDigest.com
You have to join the site to download the manual but it is free and this is a very good site for manuals and other info for the appliance repair DIYer.

Sounds like the compressor relay's contacts are welded together.
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Old 06-08-2011, 09:14 AM
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This unit does not use a relay it is a Permanent Split Capacitor (PSC) compressor.
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Old 06-08-2011, 03:55 PM
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The wiring diagram does show a relay on the circuit board which I thought controlled the compressor.
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Old 06-08-2011, 04:42 PM
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Quote:
Originally Posted by denman View Post
The wiring diagram does show a relay on the circuit board which I thought controlled the compressor.
Where I just looked again.
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Old 06-09-2011, 05:36 AM
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Page 20 in the manual near the compressor on the AC PCB Assembly, it is marked RY-COMP.

If I am out to lunch on this one could you explain what the function of this relay is
Thanks in advance

denman
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Old 06-09-2011, 07:31 AM
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Quote:
Originally Posted by denman View Post
Page 20 in the manual near the compressor on the AC PCB Assembly, it is marked RY-COMP.

If I am out to lunch on this one could you explain what the function of this relay is
Thanks in advance

denman
Yes upon further examination it is a switch (solid state) . This switch is between L2 and the overload. What purpose it serves is another question as it is not between any compressor windings.
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Last edited by icehouse : 06-09-2011 at 07:50 AM.
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