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Old 20-02-2017, 08:06   #1
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Fan on AB compressor

I just noticed that the fan on our Adler Barbour compressor does not run continuously while the system cycles on. Is that normal? Or do I have fan problems in m future?

Refrig performance is fine.

During a cycle, the fan runs intermittently, pulsing ever 2-3 seconds.

Thanks for your insights.
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Old 20-02-2017, 08:20   #2
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Re: Fan on AB compressor

I dont think pulsing every 2-3 secs is normal. It should turn off and on for longer periods of time IIRC.
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Old 20-02-2017, 08:24   #3
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Re: Fan on AB compressor

The two that I have had run continuously with compressor. I'd replace the fan, its cheap, and hope its the fan. I surmise it may be pulling more current that it should and the controller is truing it off, then restarting.
That is a pure SWAG though
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Old 20-02-2017, 09:36   #4
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Re: Fan on AB compressor

To be clear, the fan does turn on/off in sync with the compressor. The fan just doesn't run continuously while the compressor is cycling. It pulses, 3 seconds of blade movement, throughout the cycle.

Just doesn't seem right.
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Old 20-02-2017, 10:19   #5
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Re: Fan on AB compressor

Try replacing your fan , but check the connections first , if that doesn't do it then it is probably your controller .

Regards John
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Old 20-02-2017, 11:23   #6
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Re: Fan on AB compressor

It was the fan. And, yes, it should run continuously thru the cycle. Thanks team.

Replaced with a spare on board. Score!
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Old 03-03-2017, 11:12   #7
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Re: Fan on AB compressor

OK. That was a short lived victory. After running normally (strong continuous fan run during cycle then stop), we are back to a wimpy intermittent fan during cycles.

Refrig performance has been fine.

Is this an electronic control module issue? Does that module control the fan???

Thanks....

Nancy
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Old 03-03-2017, 11:20   #8
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Re: Fan on AB compressor

Could it be that you have two bad fans ???
What is the amp draw on the fans that you are using , it may be stated in watts.

But again check those connections .

Regards John.
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Old 03-03-2017, 14:35   #9
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Re: Fan on AB compressor

John,
You totally rock!!

Two bad fans ... Who would have thought! Thank you sooooo much for adding your advice before we ordered a new electronic control module.

Fan #3 is humming away now.

Thanks again for your attention to this forum.

Nancy
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Old 04-03-2017, 09:04   #10
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Re: Fan on AB compressor

Quote:
Originally Posted by nknowland View Post
John,
You totally rock!!

Two bad fans ... Who would have thought! Thank you sooooo much for adding your advice before we ordered a new electronic control module.

Fan #3 is humming away now.

Thanks again for your attention to this forum.

Nancy

Thank you Nancy , my pleasure , I hope this fan works .

Most manufactures use very cheap fans , they last around a year of live aboard use.

I'm a little obsessed with fans

I put twin Noctua fans on my machines that are IP67 water resistant and are rated for 150000 Hrs , using only 1 milliamp each , they move a lot of air silently . Sorry for the plug, but here on the forums you see a lot of fan failures. This can have disastrous effects on your cruising comfort. The lose of food stores due to refrigeration failures is an event that we all want to avoid.

Regards John.
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Old 12-04-2017, 08:24   #11
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Re: Fan on AB compressor

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Originally Posted by ColdEh Marine View Post
Thank you Nancy , my pleasure , I hope this fan works .

Most manufactures use very cheap fans , they last around a year of live aboard use.

I'm a little obsessed with fans

I put twin Noctua fans on my machines that are IP67 water resistant and are rated for 150000 Hrs , using only 1 milliamp each , they move a lot of air silently . Sorry for the plug, but here on the forums you see a lot of fan failures. This can have disastrous effects on your cruising comfort. The lose of food stores due to refrigeration failures is an event that we all want to avoid.

Regards John.
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Hello again John....I have another AB refrig question and you are top on my list of helpful experts!

Usually, the thermostat is set at 5-6 to keep the temp at 38-40 deg (in the Bahamas). However, after defrosting a few days ago, the temp is 34 degrees with the setting at 3. I have never had a too cold issue before.

The thermostat knob seems to respond ok when turning off (with a click). But is this a sign that I have thermostat problems in my future?

For now, at least the super cold beer is nice!

Thanks for your thoughts.
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Old 12-04-2017, 08:41   #12
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Re: Fan on AB compressor

Hi Nancy,

Sounds about right . Once you defrosted your system you will definitely notice a difference in performance on the colder side . Your sensor bulb was probably surrounded with ice which can sometimes act as an insulator and impede its ability to sense the plate temperature. Just make sure it is still attached well to the plate and adjust it to get that beer just the right temperature .

The click is normal for a mechanical thermostat . But they do some times fail , you should carry a spare on board for such an eventuality .

You can contact Donna at "R parts" , they have them in stock .

RPARTS.COM - Refrigerator Thermostat

Glad to hear your fan is still going strong.

Regards John.
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Old 12-04-2017, 08:45   #13
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Re: Fan on AB compressor

Way I know to defrost is my temp creeps up. Being a holding plate system the temp of the holding plate is what is monitored and compressor cycles as a function of holding plate temp.
Encase the holding plate in a nice insulating layer of ice, and my fridge doesn't get as cold.

Of course this would not happen if box temp is what was measured, then what would happen is longer on cycle times for the compressor, but box temp would stay at set point.
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Old 12-04-2017, 09:20   #14
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Re: Fan on AB compressor

Quote:
Originally Posted by ColdEh Marine View Post
Hi Nancy,

Sounds about right . Once you defrosted your system you will definitely notice a difference in performance on the colder side . Your sensor bulb was probably surrounded with ice which can sometimes act as an insulator and impede its ability to sense the plate temperature. Just make sure it is still attached well to the plate and adjust it to get that beer just the right temperature .

The click is normal for a mechanical thermostat . But they do some times fail , you should carry a spare on board for such an eventuality .

You can contact Donna at "R parts" , they have them in stock .

RPARTS.COM - Refrigerator Thermostat

Glad to hear your fan is still going strong.

Regards John.
________
Once again you come thru with good news John!
The sensor tube is in good shape. And I'll get a spare thermostat when we get back to that states
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Old 12-04-2017, 09:27   #15
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Re: Fan on AB compressor

Happy to be of any help.

Enjoy your cruise

Regards John
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