AF-Q120VX Sharp A/C error code H3

[Rminton]

I’m running the A/C for a long period of time overnight and wake up in the morning to a warm living room with an Error Code of H3 indicated and the A/C having shut down. The filters are clean and then I go through a reset procedure as directed in the model’s manual. It restarts the A/C but then after a period of time I’llget the H3 error code again with the A/C having shut down again and I repeat the reset procedure. Can someone tell me why this is happening? I live in a 2-BR apartment with an A/C in our bedroom and this one in the living room having to cool a larger area (living room, kitchen and other bedroom/office).

 

[dave9]

If the compressor doesn't sound funky when it's turned on, I'd guess you have a leak that lost the refrigerant. If it sounds funky, I'd check the motor start/run capacitor(s) to see if any have failed.