Well, that sucked.
Like an idiot, I decided I didn't need to go out and get some wire strippers for the dehumidifier project. I cut myself with a razor blade trying to strip some wires... ugh. Didn't hurt, but it bled everywhere. *facepalm*
Anyway... I took off the back of the unit, and found that the humidity sensor was rusted. The geniuses decided it'd be a great idea to place the sensor in a place where water could drip off of the heatsink, as it condensed. I'm floored that someone thought that was a good idea.
So I cut off the connector and removed the sensor entirely. I stripped all 5 wires that led to the connector, and made a list of possible combinations between the 5 wires. It would have been easier, had the wires been labeled
like they should have been, like they are in most US products that I've worked on, but apparently the good people over at Hisense thought they were too good for that. Can you tell I'm annoyed?
I began twisting wires together and testing the dehumidifier until I found a combination that made the compressor run continuously - all the other combinations just made the fan spin. Some gave a fake reading on the humidity display.
Once I succeeded in not dying while playing with things I shouldn't be playing with, I've let it run for an hour. It ran for most of the hour without cutting off - success! It seems like it'll cut off every now and then to cool down or something, but it cuts back on after a few minutes.
Now, to run to Lowe's and grab some wire nuts and a humidity sensor to hang on the wall. This unit has a timer built into it, so I'm hoping that I can set something like 30 minute intervals of operation to help keep humidity in check. I don't think this thing would work right on a standard wall timer.
All this would be fine if the unit were old, not under warranty, or cheap. But this thing is under a year old, under a manufacturer warranty, and $300. There is
no world in which I should have to do something like this to have a working product. The manufacturer offered me a replacement - if I would ship this behemoth of a thing to them at my cost, or drive it to a repair center in Ohio.
What a terrible, terrible company.