My mitsubishi mr slim ms15 when i turn on it begins normal, but them it accelerate de blower alone and them stop and continue normal and stop blowing cold air, it blow only air but no cold

Area where "fresh" air is being pulled in is dirty, filter needs replacement, heat exchanger is old, a seal is old/torn, or mold is shooting out!
http://www.ehow.com/info_12016541_particles-blow-out-fan-air-conditioner.html

Open it and take a look, it could be debris or a loose wire.

clean the blower and check again. If still problem, check if any broken leaf in wheel.

Hi,

Here is a tip about Mitsubishi Air Conditioners and how to get the manuals for all of the Mitsubishi line. The manual include both troubleshooting and installation.

Mitsubishi Air Conditioner Troubleshooting and Repair


heatman101

mr slim has this cover. just unscrew the whole cover and you've got the visible blower. the power supply must be turned off so there is no electic shock or accident that other person may turn the a/c. then there is this cover of the fan with a lock so unlock it and you can clean it throughly with a cloth.....

you must see the indoor fan and you must clean it very good as well all the indoor unit.

Simple matter of cleaning the unit. You have to clean the filters, the coil and around the louver.

check your cap also you may have a bad condensor fan

I Have same problem

We had that problem with two units that we just had installed. Both are hooked up to one compressor. After several calls and the service person coming out twice, it turned out that they had two wires mixed up when they did the installation. Once they switched the wires the units ran ok.
BUT...now we are having another problem with the units/compressor not working after losing power in our house. We lose power on a regular basis here. Does anybody know if that means we will constantly need to call the service people to come to get the compressor working again? Or is there anything we can do to reset it? The service person that came today was not very helpful and didn't have a lot of answers for us.
Thanks