M3 turbo air not cooling - Turbo Air M3R47-2 M3 Refrigerator

If everything else is in proper working order, either a refrigerant level issue or and expansion device issue. If system constantly runs the previous, if not, possible temperature control. Look for system cycling or not cycling.

no they us a thermostat to operate temprature

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

Difficult for you to check this I'm afraid, if the fan on the cooling unit is working unless you have an experienced 'ear' you will not hear the compressor running or worse still occasionally clicking.
Possible faults are
1. Compressor not running (the fan will run even if the compressor does not) electrical fault
2. Compressor seized (consult your service guy) also true for the rest of these
3. Compressor not pumping
4. Refrigerant leak

Not much hope for a cheap repair

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

Do you mean the MSF-23NM and the TSF-23SD? If so, you can find the information for them here:

http://www.turboairinc.com/TB-Products/Soliddoor.html

Basically, the difference between the two is that the MSF-23NM runs on more amps and is a new "maximum" series that Turbo Air came out with.

http://www.missionrs.com/MSF-23NM.html
http://www.missionrs.com/TSF-23SD.html

The product spec sheets at the two links above should be easy to download from our site. If you have any trouble, you can call us at 1(800)319-0690.

Check the consenser and see if it is clean.
Be sure the compressor is running and not just the condenser fan.

there is a kit you can get we call it a sheppards hook got to a parts store and the can help

Call Rick at Restaurant Parts and More in Ohio. Give him the model and serial numbers and he can match what you need. FYI, most Turbo Air freezers are also Masterbilt. Turbo Air does the private lable thing for Master bilt.

Hope this helps.

http://www.turboairinc.com/TB-Service/Service.html#SANDWICH
Try this web site. It has you M3 listed with manual but needs exacting model number to get right one.

good Luck - Hope this works for you. If not, let me know.