LG dehumidifier LD451EGL with error code CH67

SOURCE: Re LG Dehumidifier, Model LHD

Hi,
The problem is with a sensor...

Change the sensor assembly, Part # 6877A30013M from Appliance Factory Parts in Englewood CO, about $30. Easy to change, plugs into control board, remove old temperature probe by pry T-well open with small screwdriver and then crimping back closed when new sensor is installed, about an hour start to finish, hardest part is getting all the covers off. The sensor can also be found at RepairClinic.com for about $18.00 plus shipping. Their internal PN is 1462299. There is a new OEM... PN ending in "R" that replaces the old PN ending in "M".
heatman101

SOURCE: Fault Codes

This is more of a tip since I have not actually fixed anything yet. As a test, remove the upper front cover where the buttons and displays are. (2 screws on the bottom then pull off a the plastic snaps) Inside the case on the far left, there is a piece of crimped copper tubing, open on the top end, welded to the refrigerant line, with a black sleeve covering 2 wires out the bottom end. This is a thermistor. I CAREFULLY applied heat with a butane lighter (the mini torch kind, not the "candle flame" kind), taking care not to burn anything. I applied ONLY enough to make it slightly warm to the touch. Do not think of melting anything, as this is not the purpose. Applying too much heat could damage the thermistor. With the bucket in place, the unit started right up. After I did this, it failed again in a few minutes, so I heated it again, and thus verifying it as the source. I have done it a third time, never getting it much over room temperature, and it is still running after almost an hour after doing nothing else. Since this temperature sensing is an analog function to the microcontroller that runs everything, the fault could be any bad connection or solder joint along the way from this thermister to the controller. But is sure appears something in thermistor. I hope my description is complete and clear. Good luck.

SOURCE: runs for a couple of minutes and then stops

Try cleaning out the air filter using cold water. I did not even know the unit had one until I had the same problem. Pull out the bucket. The filter is located where the front top edge of the bucket would be located if it were in the instrument. Remove it by pulling straight down. It may be taped to the instrument for shipping purposes. According to the manual, this should be done every month. I have had the machine since Katrina and this is the first time I have had a problem. Hope this helps.

SOURCE: Error code on Digital LG Dehumidifier - CH 1

Change the sensor assembly, Part # 6877A30013M from Appliance Factory Parts in Englewood CO, about $30. Easy to change, plugs into control board, remove old temperature probe by pry T-well open with small screwdriver and then crimping back closed when new sensor is installed, about an hour start to finish, hardest part is getting all the covers off. Mine is back to working like new again!!

SOURCE: LG LD65EL Dehumidifier doesn't work properly

What do you have the humidity level set at on your dehumidifier? The average is 65%. Make sure you do not have it set at 75% because if you do this could be causing it to keep the humidity so high.