Question about LG LFX25960ST Stainless Steel French Door Refrigerator
Control panel shows Er dH. All the normal info is gone. LG suggested I unplug it for 3hrs and plug it in. THe information on the control panel came back, but then after a few hours went back to the Er dH again.
The “er dh” code means a problem with the defrost cycle. It is triggered when the defrost sensor does not reach 46 degrees F within 2 hours of the defrost cycle starting. If indeed the defroster is not working, the evaporator (in the bottom of the fridge in the freezer compartment and behind a plastic cover) will eventually ice up completely, blocking the flow of cold air to the upper compartment. Use a thermometer to check the upper compartment to verify that no or little cool air is reaching it. If the evaporator is iced up, the defrost cycle is not working. Quick fix to restore operation to the upper compartment: tape over all vent holes in the upper section to keep that cool while you work below. There are about 6-7 vent opens in the back wall and two large one on the floor of upper compartment. Remove freezer door, drawers, slide rails and pull back the plastic cover (2 screws hold it in place, one in the center and one behind the ice maker) at the rear of the freezer section to expose the evaporator. Spray hot water on the ice accumulation on the evaporator (it looks like a radiator) to melt it (remembering to sop up what flows to the drain pan at the rear). The entire operation can be done in about 30 minutes (most time is used for removing ice and sopping up water from the drain pan). All should be ok for 3-4 days depending on humidity before the evaporator ices up again. In the meantime, order a replacement control board. You can view this by removing a panel w/ 3 screws at the rear left of the refrigerator. This panel controls all refrigerator functions, including defrost. Most likely, the integrated relay for the defrost cycle failed. Swapping out panels is a 10 minute job. Panels cost about $116 incl shipping from repairclinc.com. Shipping is about a week. You can find a free service manual on line that will help to identify all parts and is particularly useful for removing doors and trays so you can get at the evaporator. All in all, the customer service is useless. The fridge however is very easy to work on and amazingly simple. The replacement board has a slightly different relay for the defrost heater, so LG may have realized a problem existed with the original. It is also possible that electrical surges damaged the relay. In any case, 10 minutes and $116 seems pretty minor to have the fridge back to new condition. Good luck.
Posted on Apr 16, 2009
Er dh means the computer for your ref hasnt sensed a defrost cycle recently. dh is code for defrost heater. because of the electronics its kind of hard for me to tell you h ow to trouble shoot the problem but most likely failure is the def termination switch. this isnt a very expensive part and easy enough to change.
one way you will know something is wrong is you'll start to see frost build up on the back wall of the freezer compartment then the fresh food comparment will start to warm up. if it quits cooling b-4 you get it fixed let it def for about 6-8 hours to allow the ice build up to get off the evap coil. good luck peyton..
Posted on Jan 22, 2009
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Posted on Jan 02, 2017
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