I have a mr.slim heat/cool model msz-ge15na.

[PDF]PAR-30MAA - Mitsubishi Electric Australia

https://www.mitsubishielectric.com.au/.../IB_PAR-30...

Mitsubishi Electricand Mitsubishi Mr. Slim Air Conditioners. MA Remote Controller ..... Heat. 17 ~ 28 ?C (63 ~ 83 ?F). Auto. 19 ~ 28 ?C (67 ~ 83 ?F). Fan/Ventilation. Not settable. 13 ...

[PDF]PAR-31MAA - Mitsubishi Electric Australia

www.mitsubishielectric.com.au/.../par-31maa_ib_en.p...

Mitsubishi Electricand Mitsubishi Mr. Slim Air Conditioners. MA Remote ..... Heat. 17 ~ 28 ?C (63 ~ 83 ?F) .... Preset cooling temperature is higher than preset heating temperature.

My air recycle button just blinks. Also when i turn on the - Fixya

www.fixya.com/support/t26081705-air_recycle_button_just_blinks_also

6 hours ago - Not sure the heat pump is producing enough heat. Nov 04 ... Preset heat stuck at 63. ... Feb 05, 2016 ' Mitsubishi Electric Mr Slim E12C26426.

[PDF]MA Remote Controller Mitsubishi Electric PAR-21MAA ...

planetaklimata.com.ua/.../Mitsubishi_Electric/Mitsubishi_Electric_PAR-2...

Easy Maintenance Function (Only for Mr. SLIM PUHZ series) . .... 4.4.3 Automatic Cooling/Heating Display Setting . ... Monitoring the Operation Data by the remote Controller (for Mr. SLIM) .......... ..............48 . How to .... 63. 4.2 How to set rotation function(back-up function, 2nd stage cut-in function) . ... Preset temperature (. °C. ).

Clogged air filter or a loose belt between the fan motor and fan wheel will cause a frost up.

I am not finding that model number? Here is link to place where it has a lot of manuals on Mitsubishi units.

http://www.manualsonline.com/

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

Unit short of refrigerant or outside condenser very dirty. Clean outside thoroughly and make sure there is plenty of warmth coming from it when working.

I had the same problem and I found it was that another unit had the heat running while I was trying to run AC on another (they're both attached to the same condenser) so it could only run heat or AC not both. Turn off the heat!

Try this Air Conditioner Sizing Worksheet from Consumer's Reports. It will help you.

I hope you find this information to be very helpful to you moving forward.

Please leave a rating. :-)

Here is the service manual for the model # you gave. http://www.mehvac.com/UploadedFiles/Resource/MSZ-FD09~12NA_Service_Manual_OBH497C_12-01-08.pdf

http://www.mrslim.com/UploadedFiles/Resource/MSZ-A24NA_Op_Manu_SG79Y961H03_12-29-08.pdf Try this web site for you manual. It's where I found it.

HOW TO WORK THE HEATING AND COOLING CONTROL PANEL
- PRESS THE SWITCH ONCE IT OPERATES "COOL"
- PRESS THE SWITCH AGAIN IT OPERATES "HEAT"
- PRESS THE SWITCH ONCE AGAIN IT STOPS.