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LG Refrigerator Defrost Error ER DH

I have a LG LRSC26941ST refrigerator bought one and half years ago. Recently the display panel started to display error message ER DH. the freezer stopped working and accumulates lots of ice on the insider panel. I tried to unplug the power cord and re-plug. it works for several hours and then went to error again. I called repair shop and was told the defrost heater was defect and should be replaced. I ordered the defrost heater from LG through an authorized repair provider and replaced it by myself. 
Now the freezer works and seems defrost heater works too. However, It displays error ER DH again. Unplug and re-plug, it display ER DH again after several hours. I checked the error code ER DH. it says the reason can be defrost heater, fuse, or unplugged connector(show the error after 4 hours). Since the defrost heater is a new one, I think the problem now is in the unplugged connector. I don't know where it is and how to fix it. Please help me figure it out. Thanks.

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  • singha86 Aug 23, 2008

    I have a LG Lcs26905tt refrigerator bought 2 years ago. Recently the display panel started to display error message ER DH. the freezer stopped working and accumulates lots of ice on the insider panel. I tried to unplug the power cord and re-plug. it works for several hours and then went to error again. I was replaced the circuit board and working for several hours and went to error again. I checked the error code ER DH. it says the reason can be defrost heater, fuse, or unplugged connector(show the error after 4 hours). Since the defrost heater is a new one, I think the problem now is in the unplugged connector. I don't know where it is and how to fix it. Please help me figure it out. Thanks.

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It the def t-stat, def. thermistor, or def. fuse whatever lg decides to call it this week that is causing your issue

Posted on Jun 13, 2008

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The code ER CO keeps coming on, on the display panel. The fridge and freezer still work but the code keeps coming up. Any info on that?


LG Bottom Freezer Refrigerator Error Codes Sears PartsDirect


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LG Refrigerator Error Codes

These error code explanations can help you diagnose a problem with your LG bottom-freezer refrigerator. For repair how-to help, visit the PartsDirect repair help section, which includes repair help for washing machines, other major appliances, lawn and garden equipment, garage door openers, vacuum cleaners and more. You can also search for owner's manuals, get advice from an expert and find refrigerator replacement parts. Error Code
Er FS Error Code
Er rS Error Code
F dS Error Code
r dS Error Code
Er HS Error Code
Er IS Error Code
Er SS Error Code
Er rt Error Code
Er It Error Code
Er gF Error Code Error Code
r dH Error Code
Er IF Error Code
Er FF Error Code
Er CF Condition
Condenser fan motor is defective Check/Repair
Condenser fan motor, wiring or the control board Shop Parts
Condenser fan motor, Power control board, Wiring harness Error Code
Er CO Condition
Communication error Check/Repair
Communication error between main board and display board Shop Parts
Display control board, Power control board, Wiring harness

Jul 16, 2015 | LG LFX25974ST 24.7 cu. ft. French Door...

1 Answer

Error message on the display panel that says ER dH - inside of refrigerator getting warm - water dispenser, ice, temperature control on front panel not working


ER dh means you have defrost issue that needs to be addressed asap. The evaporator has frosted up so badly that the circulating cold air cannot get to the refrigerator. You would need to get inside the freezer back panel and remove it to access into the evaporator coil area. Test the defrost circuits to see if the defrost terminator is broken. If it is, replace it and melt the ice build up as well.
Good luck

Jul 16, 2011 | LG Refrigerators

1 Answer

Message ER DH continues to pop up on the door. If


ER =ambient temp sensor failure
DH= defrost heater

Defrost heater, temperature fuse short
circuit, unplugged connector(indicated
4 hour later after trouble)

You is gonna have defrost problemas!

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1 Answer

Have a LG 3 door bottom freezer with error code Er dH. Was told by tech support to unplug for 10 mins. If this fails unit needs service. Is this correct?


dh means defrost problem.replace defrost control and element,behind freezer panel.dont forget to unplug fridge before you work on it

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1 Answer

Door display shows ER WITH A UPSIDE DOWN HP. I turn the power off and back on and the display goes back to normal but after several hours it goes back to where the only thing on the display is the ER PH...


That stands for "error defrost heater"
Even though the refrigerator has gone through a defrost cycle, if a temp sensor does not reach a set temp within an hour, that error will display. You may have a bad defrost heater, defrost relay, thermal fuse, blocked defrost drain,..... something wrong with the defrost system anyway.

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Error Message: Er dH


The error codes are listed in the service manual (p. 32) at the address below:
LFX25960 Service Manual

"Er dH" seems to be a defroster issue.

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1 Answer

Where is this fuse located on the LG refrigerator is displaying a ER DH code error


GO TO SEARS .COM ,CLICK ON PARTS,PUT YOUR MODEL NUMBER IN AND YOU WILL FIND WHERE THE PART IS,LET ME KNOW-MIKE

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LG LRSC26923TT freezer not freezing error display


You have a defrost problem that requires a service call from a qualified LG technician.

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Where is this fuse located on the LG refrigerator is displaying a ER DH code error


Hi. You have an Error Defrost Heater. Its taking too long for the heater sensor to open the circuit during defrost. You normally replace the heater, heater sensor and circuit board(motherboard) located on the back of the refrigerator in this situation. Check your mollex plugs and make sure they are connected tightly at the evaporator coil area. Sometimes they come loose. I reccommend replacing the heater and heater sensor located top right on the evaporator coil. This should take care of the problem. Need parts see me on ebay as user, themackshack. Good luck, Mack

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1 Answer

LG Refrigerator


That stands for a defrost heater problem. Usually it's the defrost detect circuit that has a blown thermal fuse.

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