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Old 07-15-2018, 09:17 PM   #1
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Refer Performance

I have been testing all the systems on our (soon to be) 179. Everything seems go except the performance of the refrigerator. The coldest I have been able to get it is about 48f. The outside temp is around 90 in the shade, but still. Does this sound like normal performance. If not, is there anything I can do to improve the performance other than replacing the cooling unit?
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Old 07-15-2018, 09:20 PM   #2
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How long have you had it running? They take a "long time" to be cool.
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Old 07-15-2018, 09:32 PM   #3
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Quote:
Originally Posted by Mr. Dan View Post
How long have you had it running? They take a "long time" to be cool.
X2 Especially in the hot sun. You need to give it several hours to a couple of days depending.


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Old 07-15-2018, 09:46 PM   #4
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It is sitting the shade, but the daytime temps have been around 90-95 every day for a while. It has been running at least 24 hours. 50 is as low as it gets and that is on shore power.
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Old 07-15-2018, 09:52 PM   #5
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If you'll post who manufactured the fridge and its model number, someone will give suggestions for tests.
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Old 07-16-2018, 12:12 AM   #6
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According to the manual the model and serial number should be on a sticker inside the unit, but it is not there. The manual is generic to several models, but by the process of elimination it is probably a Dometic 8501 or 8551.

After speaking tonight with a friend who owns a trailer with the same brand of refer, I found that the cooling fan is not operating. Tomorrow I will try to track down the cause for that issue, but that is likely at least part of the problem. My friend said that there was an in-line fuse on his cooling fan, but I do not find one on my model.
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Old 07-16-2018, 01:49 AM   #7
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Operations manual can be found here. https://www.campingworld.com/include...cs/RML8555.pdf
Service manual can be found here. http://bryantrv.com/docs2/docs/Servi...,%20RM8xxx.pdf


I'll warn you that neither one seems to explain much on testing and troubleshooting.
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Old 07-17-2018, 08:51 PM   #8
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Model 8501

I finally located a sticker in the refrigerator and the model is a RM 8501. I have also determined that the cooling fan in the lower back of the unit is not working. It is interesting that none of the schematics that I have found online for that model show a cooling fan. However, the cooling fan never seems to run.
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Old 07-18-2018, 12:44 AM   #9
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You can pull the leads off the sensor and short them together, that will make fan run if it works. If it runs, then next check sensor.
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Old 07-19-2018, 08:31 AM   #10
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I jumped the sensor leads and the fan runs. With the fan running the performance has improved. Now I need to find a replacement sensor. It appears to me that this was an after market fan kit, because the electrical schematic does not show a fan or fan switch. Thanks everyone for the help.
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