Question about Turbo Air 49 cu. ft. / 1388 liter Commercial Freezer MSF-49NM

1 Answer

What's your problem?I recently purchased a used turbo air MSF-49nm freezer. It cooled down from room temp to -7 in less than 45 minutes. Problem is that it cycles and temp immediately starts risin

I have checked coils for dirt and they re ok, raised temp set point from -5 to 0 but same issue.

Posted by G Murphy on

  • 4 more comments 
  • mike cooper Apr 14, 2012

    Has the sensor/ thermostat been displaced?

  • G Murphy Apr 14, 2012

    Displaced? Please elaborate.

  • G Murphy Apr 14, 2012

    Mike, I do not know what you mean by displaced, did you mean replaced? If not tell how to check please.

  • G Murphy Apr 14, 2012

    THe freezer appears to go into automatic defrost properly, freezes like a champ and does not leak anything on the floor.

  • G Murphy Apr 17, 2012

    I have noticed that the compressor also runs during defrost cycle. When auto defrost kicks in the compressor also comes on for the full cycle.

  • mike cooper Apr 20, 2012

    I meant had the sensor end become detached from the fixing. However if it had it would be running longer, not shorter. What settings are on the control? Can you set the setpoint to lower than -5, e.g to -21?

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mike cooper

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The compressor runs during defrost to supply hot gas to the inside coil

Posted on Apr 20, 2012

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http://www.acmehowto.com/howto/appliance/freezer/repair/tempcontrol.php

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1 Answer

Set tempature on minus 5 unit doen't shot down runs all the time.


It sounds to me very likely that your thermostat isn't functioning properly. change the settings and wait to see if it responds. If the thermostat is working it should shut down the compressor when you increase (rise) the temperature and aversly start it when you drop the temperature. Always let the unit sit for 3 minutes for the pressure inside to equalize before restarting. Good Luck

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