How to add refrigerant to mt27

Improper refrigerant charge. Its critical and measures coil temp and not cabinet temp. If you did add gas that is the answer. Take out all the gas, put vacuum pump on it, then weigh in exactly in ounces the correct charge, its listed on the spec. tag. Hope this helps and good luck.

Multiple reasons. Is it turned on & set. Is the fan inside & out turning fast. Is there frost on a line at the compressor Is the compressor outside cabinet s/b hot & vibrating continually. Is the condenser (attached to compressor with radiator) warm/hot & not plugged with lint etc between the fins. ?????

Condenser fan motor or motor wiring is bad. That compressor should never run without the fan. Good luck.

Yes they do with majority of models...

I have the same problem. My 7 yrs old Beverage Air model MT27 got very cold even with temperature control set to almost off position. It froze all the water and pops in it. Somebody have the solution?

Normally thermal overloads have a button like appearance on the compressor. Designed to open circuit when temp has caused distortion to the bi-metal contacts. Upon cooling will close again. Disconnect power before checking continunity on the overload terminals.

I've seen refrigerators that are working fine blow GFI outlets when the compressor starts, usually just change to non GFI outlet for fix. You say its tripping GFI breaker , is there anyway to test it on non GFI breaker?

Hi there, I have a MT27 and also need wiring diagram. If you ever found one where can I get it please? Thanks Lee

On commercial coolers, the fans are designed to run 24/7 to prevent the coils from freezing up. If the unit only runs 4 times a day, it will not maintain proper temps. Domestic units utilize the freezer compartment air to keep the refrigerator section at temp. Totally different set ups. I wouldn't do what you are suggesting with a commercial unit.

We have a solution to this link that will help

http://www.fixya.com/support/r6019270-refrigerator_freezer_air_conditioner