I had the same problem and i managed to find a universal remote control from JARCAR Electronics. Model of the remote: Digitech AR-1729. It doesn't list Conia as compatible but I managed to gain control of the aircon using the code: 291. Realm Crafter Cracked Version. For some reason when you press the power button on the remote, it's like your double pressing the on button so the aircon switches on and off quickly. You need to press the power button on the remote quickly and move it from reception before it powers down the unit again. At least I have control of the aircon again and I don't have to put up with these humid hot days in melbourne.
When all the buttons are in Japanese...what do they all mean?