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Air Conditioning - Mitsubishi Ductless Mini Split in Summit, NJ



Mitsubishi Ductless Mini Split in Summit, NJ
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Customer states they had Mitsubishi Ductless system installed and has not worked right since day one.

Upon diagnosis found E6 error communication code, outdoor unit currently has no LED lights on, in the front PCB main control board. Tested incoming voltage there are 240v present at L1 and L2.

Also tested voltage between S1 and S2 which was as 240v when testing voltage between S2 and S3 on outdoor unit found system at 0v DC.

This lead me to the back noise board and capacitor board. These board have shorted which is causing main front PCB to malfunction.