I have an LG LWHD1200R window unit. Recently it began to cycle through its different modes all on its own. Compressor and fan both work great, and it may stay on the selected mode without any problem for days, but then all of a sudden it will start to change modes from cool, to power save, to fan, to dry, and back again to cool all on its own. Sometimes it will jump just to the next mode, sometimes it will cycle through them real fast for an hour or so, and then settle down.
I should add that the control buttons on the unit are temperamental. Sometimes they work, sometimes they don't. The remote always works fine.
I'm thinking the problem is with one of the PCB control boards. But there are 2 and I can't figure out which controls what.
I tried looking for the manual for the unit, but the links to it seem to be dead.
Thanks in advance for any help.