My mt 12 cooler doesnt blow cold just warm air

may have air trapped in it still or thermostat is not working properly..

As per your problem mentioned.There are few solved help links to troubleshoot these problems.Go through the list and Click the link below:----
Air conditioner blows air but not cold air http://repairhelpcenter.blogspot.in/2012/07/air-conditioner-blows-air-but-not-cold.html

------------
Car overheats and Air blows hot at idle? http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

------------
Heater blows cold? http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

-----------
Heat blows cold on drivers side and hot on passenger side? http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html---------- Hot air on the driver's side vents only? http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html

--------------
2005 Chrysler PT Cruiser: A/C Blows Warm? http://whoisbyme.blogspot.in/2012/06/2005-chrysler-pt-cruiser-ac-blows-warm.html

-----------
1992 Toyota Camry: A/C Control light Flashing and A/C not Blowing Cold? http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html

--------------
No heat, blower blows only cold? http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html

------------
These will help.
Thanks.

Thermostat Set @5, 36 Degrees F

For this types of problem,i suggest you to check this help links:----Car heater blowing warm, but not hot air?http://schematicsdiagram.blogspot.com/2011/12/car-heater-blowing-warm-but-not-hot-air.html
---------A/C, heater, defroster fan, not working?http://technoanswers.blogspot.in/2012/02/ac-heater-defroster-fan-not-working.html
--------Heater problem?http://technoanswers.blogspot.in/2012/02/heater-problem-on-isuzu-trooper.html
---------Engine Overheats and heater blowing cold?http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html
-----------Heat blows cold on drivers side and hot on passenger side?http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html----------------This will help.Thanks.

Bear in mind that these coolers can also warm, depending on the orientation of the power cord connection. One end of the power cord has an arrow, the other end has a blue dot on one side and a red dot on the other. For cooling, connect power cord ends so that the arrow is on the same side as the blue dot. If the arrow is on the same site as the red dot, the cooler becomes a warming device, venting cold air outside the cooler and into the car. Could that be the problem?

low fluid level or heater control valve may need replace..check hoses going to heater core...if cold...between heater control valve and heater core..replace control valve

check one of the following stop the cooling
a- condenser need cleaning
b- condenser fan not operating
1 -check correct voltage comes to the fan motor if ok
2- check capacitor if ok
3-check motor winding
c-low suction pressure
need check for leak before charging.

problem with blend door either stuck or linkage problem

Coca Cola does not manufacture these coolers. They are manufactured by another company for Coca Cola. Model number MT45 is a "Beverage Air" product.

Some parts for these units can be ordered through a company called "Case Parts" that are on the internet.

This sounds like you either need to clean or replace the filter, but if the filter is some what new you might want to take a look at the coils just past the filter, if the coils do not have a shine to them then you might want to buy some coil cleaner (i found simple green or formula 50 works great), then you will have to spray the coils with the cleaner, let sit about 10-15 min, then give it a very good rinse with warm water. After that it should work like it is brand new. Enjoy!