Error p8 is coming in the remot unit on after 3 mintus

SOURCE: p8 eroor code

P8 error is abnormal pipe temperature indoor. If you are running it on heating P8 error will appear because the disc pressure is too high. It could be overcharged.

SOURCE: Mitsubishi Mr slim Airconditioner error check P8

I Have same problem

SOURCE: outside unit fan not turning no cold air inside.

Ok here we go. It is possible that the capacitor for that fan unit is out or the motor for that unit is out. Without the proper tools i.e. an electrical meter, there isn't really a way to test the unit. The remote should not have anything to do with the unit activating if the is a manual thermostat. I suggest checking to see if either the motor has gone bad or the capacitor has bit the dust. If you have the motor changed make sure to replace the capacitor

Good Luck on your repairs hope I helped you some\
Dave

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SOURCE: Mitsubishi Air Conditioner blinking Problem

Hi,
Here is where you can find all the info you will ever need about Mitsubishi Air Conditioning units...
Check out this tip that I wrote about that...

Mitsubishi Air Conditioner Troubleshooting and Repair
http://www.fixya.com/support/r5643983-mitsubishi_air_conditioner

heatman101

SOURCE: MITSUBISHI air con. compressor 5 problems and solutions

Hi,
Here is where you can find all the info you will ever need about Mitsubishi Air Conditioning units...
Check out this tip that I wrote about that...

Mitsubishi Air Conditioner Troubleshooting and Repair
http://www.fixya.com/support/r5643983-mitsubishi_air_conditioner

heatman101