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?



1 Answer

mike cooper

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 884 Answers

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

Posted on Apr 20, 2012


Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

The compressor stop at 58

Change the temperature control.

Dec 13, 2010 | Turbo Air 49 cu. ft. / 1388 liter...

1 Answer

Turbo air frz goes into defrost compressor continous to run. Does not stop during defrot

Hi, Please set your thermostat a bit warm and observe the compressor. Also check your freezer for leaking.

Nov 06, 2010 | Turbo Air 49 cu. ft. / 1388 liter...

1 Answer

Msf-49nm freezer will not go below 34 degrees farenhight

Change the temp control,check to see if it is iced up on the evaporator

Sep 15, 2010 | Turbo Air 49 cu. ft. / 1388 liter...

1 Answer

I need a manual for maximum freezer
Since I do not have the exact model number, here is the site you need to visit to get the manual. Hope this is what you are looking for.

Jan 23, 2010 | Turbo Air 49 cu. ft. / 1388 liter...

1 Answer

Msf-49nm will not stay below freezing!!

My next question is, you say you have to call a tech to come out. Is he doing something? And if so, what? With the limited info I have at this time, it sounds like there may be a refrigerant problem. Let me know so we can continue. Am looking forward to resolving this.

Jun 02, 2009 | Turbo Air 49 cu. ft. / 1388 liter...

1 Answer

Msf-49nm evaportor pan and drain iced up

I deal with MasterBilt which is a private lable made by TurboAir.
I have several units but only one does this icing up thing. Look for a bad seal on the door gasket. These really ice up if that does not seal almost perfectly. Look for premature termination of the defrost cycle. Check that the heater is pulling amps. The wiring diagram at "" is very poor but it shows 2 heaters for the refrigerator. They list a diagram for the freezer but it's not there. I know for sure that there is a heater for the evap but don't know about the drain. I've seen some have it and some don't. there tech support line has much to be desired but it's worth a shot. Also, the bottom hinge on the door fails fairly regularly. This allows the door to drop just enought to disengage the switch at the top of the door and stop the evap fan from running, thus causing a freeze up.
Good Luck . You got your hands full with this one.

Dec 11, 2008 | Turbo Air 49 cu. ft. / 1388 liter...

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

Nov 19, 2008 | Turbo Air 49 cu. ft. / 1388 liter...

Not finding what you are looking for?
Turbo Air 49 cu. ft. / 1388 liter Commercial Freezer MSF-49NM Logo

Related Topics:

242 people viewed this question

Ask a Question

Usually answered in minutes!

Top Turbo Air Freezers Experts

Dennis Boxerman

Level 3 Expert

1305 Answers

Muntejaya Ginting
Muntejaya Ginting

Level 3 Expert

10422 Answers


Level 3 Expert

85239 Answers

Are you a Turbo Air Freezer Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides