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Old 03-22-2017, 08:08 AM   #1
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Groaning fridge

Our electric refrigeration in our 02 Ford Sportsmobile is very noisy.
It hums loudly and that's OK, but it also groans weirdly at intervals.
It's like a low-pitch then a high-pitch groan. Is the fan going out?
Thanks,
Pete
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Old 03-22-2017, 08:23 PM   #2
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I have no idea but my home fridge has made a horrible groaning noise for almost twenty years. Mrs AT keeps hoping it will die, but so far it works fine.
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Old 03-22-2017, 08:54 PM   #3
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Maybe pull it out of the cabinet and check the fan for obstructions and clean the coils?

Lots of threads on fridge removal and modifications:
http://www.sportsmobileforum.com/for...oval-2530.html
http://www.sportsmobileforum.com/for...html#post45153
http://www.sportsmobileforum.com/for...fan-10171.html
http://www.sportsmobileforum.com/for...tml#post193388
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Old 03-22-2017, 09:09 PM   #4
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Quote:
Originally Posted by arctictraveller View Post
I have no idea but my home fridge has made a horrible groaning noise for almost twenty years. Mrs AT keeps hoping it will die, but so far it works fine.
That doesn't only happen when you're sleeping, does it Jeff?
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Old 03-22-2017, 10:04 PM   #5
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If it's a Norcold some of them just rattle and hum.


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Old 03-23-2017, 05:30 AM   #6
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It sounds like one of the fans is losing a bearing (or more likely sleeve - few of these fans are actually ball bearing based).

If it's like my Norcold, the fans are fairly standard 24V 120mm fans (not 12V as you might expect - the fridge power supply accepts either 120VAC, 240VAC, 12VDC, or 24VDC and makes 24VDC for the system to run on). Open it up and look at the fans -they should have the specs printed on them. Go to Digikey (digikey.com), Mouser (mouser.com), or some other place and order a new fan. As a temporary work-around, if you remove the label on the fan, there should be a small rubber plug that you can remove to gain access to the bearing - put a couple of drops of sewing machine oil (in a pinch: get a drop of automatic transmission fluid from the steering dipstick) - DO NOT UNDER ANY CIRCUMSTANCES USE WD-40. It is NOT a lubricant, it is a water displacing cleaning agent and will REMOVE what little lubrication there is on the bearing - it will run for a few days then die. Put the plug back in and you should be able to run for a few months - enough to order a new fan.
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