Hi Christopher, Thanks for replying. I found the indoor fan badly clogged with dirt, filters were ok. I dismantled the CPU + AC motor, cleaned the fan throughout. Before putting back everything together, I am now testing the AC motor (not coupled to fan) but no spin so far. I check for voltage on the motor pins (Black-White & Black-Red got 210V). Not sure how to test the grey-yellow-brown small wires which should be for speed control I presume. Remote control and other electronic such as relay seem ok.

May 12, 2010 - Hi everyone, I got a YORK air conditioner (2 year old) model YJCA-YJHA R22 (50 Hz), which refuse to start his condensing unit/compressor. No more cooling. After 2 mins the temperature display panel of the air cooler shows 'F6'. Carenado Bonanza A36 Manual Meat. I got explanation from the Installation & Owner's manual. Condicionador_de_Ar_Split_Agosto_de_2007 - Download as PDF File (.pdf), Text File (.txt) or read online.

Where is this RPM sensor? How to test it? PS: I attached a pic of the AC motor and CPU card if it can help. Regards, JMM.