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Refrigerator Compressor relay - can it work sometimes and not others?

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Freezer and refrigerator cooling, but not getting cold enough. All coils clean, no frost, fans are running. Sometimes compressor runs

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Old 07-15-2012, 10:22 PM
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Default Refrigerator Compressor relay - can it work sometimes and not others?
Model Number: frt21hs8ks   Brand: Frigidaire   Age: 5 - 10 years   

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Freezer and refrigerator cooling, but not getting cold enough. All coils clean, no frost, fans are running. Sometimes compressor runs immediately after plugging in, sometimes relay clicks and compressor does not come on.

Suspect bad relay. Removed it and it rattles a little. Is it possible that the relay can work just some of the time? Could it be the capacitor? Or even the temperature control?

Thanks!
Charles


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Old 07-16-2012, 01:42 AM
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Yes, the start device could be intermittent, just order a new one AP3891852.
If you have a meter, you could check it to verify.
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Old 07-16-2012, 07:43 AM
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Quote:
Originally Posted by richappy View Post
Yes, the start device could be intermittent, just order a new one AP3891852.
If you have a meter, you could check it to verify.
Thanks for the fast reply RicHappy! I will order a new start device and try that first. Is the start device also sometimes called a relay?


By the way what kind of meter do I need to test the relay? I have an old Micronta multimeter for testing current and resistance, but it's pretty primitive.

Thanks,
Charles
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Old 07-16-2012, 09:31 AM
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The start device has 3 output pins forming a triangle, check ohms between the bottom two, should be 5 to 10 ohms.
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Old 07-16-2012, 10:53 AM
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Quote:
Originally Posted by richappy View Post
The start device has 3 output pins forming a triangle, check ohms between the bottom two, should be 5 to 10 ohms.
Thanks again. I tested it and got no reading across any of the pins. I suppose it's bad!
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Old 07-16-2012, 01:26 PM
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Yes, blown open.
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Old 07-17-2012, 07:36 PM
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Quote:
Originally Posted by richappy View Post
Yes, blown open.
Well, I replaced the relay. The compressor still comes on about the same time, and the fridge and freezer are still not getting cold enough. Both stop around 58dF.

Any ideas on the problem?

Thank you,
Charles
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Old 07-18-2012, 01:21 AM
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If you set the controls to the coldest setings and the compressor is vibrating and the condenser coils warm and still poor cooling, you have a bad compressor/refrigerant leak.
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Old 07-18-2012, 09:01 AM
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Quote:
Originally Posted by richappy View Post
If you set the controls to the coldest setings and the compressor is vibrating and the condenser coils warm and still poor cooling, you have a bad compressor/refrigerant leak.
The compressor is vibrating, and gets warm. The condenser coils don't seem to be very warm at all, however.

These are the condenser coils, right?:
http://www.steecos.com/additional/large/26245_lg.jpg
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Old 07-18-2012, 02:15 PM
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Well, that confirms a bad compressor.
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