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CH 01 usually indicates that the filter is dirty and needs to be removed and cleaned. Turn the unit OFF and unplug it, before removing the filter. Never operate the unit without the filter in place.
In the past, I have recommended turning the Master ON/OFF Switch to OFF and unplugging the unit for 12-15 minutes. This will give the unit time to hopefully, reset itself. Then Plug the unit back in and turn the Master ON/OFF Switch to ON. Set the humidity control as you normally would. If it successfully reset itself, it should operate normally.
If you continue to have problems, contact LG Customer Support at 800-243-0000.
I have a Comfortaire BHD501 dehumidifier. A couple weeks ago I noticed ice building up on top of the unit,so I unplugged it to defrost. I plugged it back in and it worked until I noticed the "CH" "01" code. It would run a few seconds then shut off with that code showing. I took off the front of the unit and noticed rust on some of the metal parts. Then I took the cover off the circuit board for the front read out. I noticed corrosion on some of the solder points. When I looked closer at the plastic cover for the circuit board I noticed a small burn mark. The water from the melting ice must have run behind the cover and shorted out the circuitboard. At this point I don't know if new boards are available.
I had the same problem, and I wound up calling LG's customer support line. The rep I spoke with says that the "CH" code means that the internal thermostat is not able to accurately read the air temperature, and the unit will require servicing.
She gave me a couple of numbers for local folks, and I'll call them in the next day or so, but I'm thinking that this may not be worth the repair, unless it's pretty cheap: I bought the unit for under $100 less than 9 months ago, and I'm not eager to shell out a bunch of money to get it repaired.
This will need to be serviced. LG has a 5 year warranty on these models. They usually will tell you of a service center nearby which will service it free of charge since it is under warranty. If you do not live near a service center they may ship you a replacement and you send your old dehumidifier back to them. Make sure you have your reciept when you contact them so they can verify it is 1 year old.
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