How do you service Mitsubishi split airco MS-09NV?

Possibly water in the disconnect or wet control board. Be sure system sealed up outside properly. Allow to dry and try again.

Ensure power supply is correct and you have correct live and neutral and Earth at unit, test power across live and neutral to see voltage at outdoor unit terminals

there you go a link to the user manual, chers!
Users Manual For Mitsubishi SRK63ZEA S1 SRK71ZEA S1 SRK80ZEA S2 Air...

The following link includes service manuals for your air conditioning system: http://usa.mylinkdrive.com/uploads/documents/2388/document/MS-09~17TW,TN__MU-09~17TW,TN_Service_Manual.pdfI'm sure you find the solution inside the manual.

most likley your airco needs servicing.there is a condensate drain off on the outside where the copper piping comes out the wall,if after the 5 to 10 mins no water comes out through there it could mean that the drainline is choked..also u can check to see if your evaporator is graded properly to ensure a proper drain out of the condensate:-)

do flashing else leak check the pipe line

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

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

Most likely a broken fan capacitor.
When you follow the wires from the fan you will find it. Try to replace it. (electronical store)
I'm an airco service engineer, in 95% of the cases this is the cause.

Frans Verhees
The Netherlands

slt cava