Hi

I have a mitsubishi split aircon msh-26sv installed in my new rental but after 5 minutes it stops and left hand light on front of the unit flashes 5 times

Panel inside indicates: 'Outdoor Power System Abnormal - check compressor is loked or not'

Any suggestions on identifying and verifying the problem/fix. Do not want to spend XXX if it is not economically viable

Many thanks in advance
Neil