Error code reference

LG Refrigerator Error Code Er dH

Poor Defrosting - Even though 1 hour has passed since defrosting started, the defrosting sensor has not exceeded 46°F (8°C); caused by temperature fuse disconnection, heater disconnection, drain jam, or poor relay for heater.

SourceLG Refrigerator - Service Manual: LMX25964 Ice Maker & Dispenserp. 20, 27

Diagnostic procedure

The full Er dH procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check the door gasket, then check Fuse-M, defrost heater, and defrost sensor resistance.

SourceLG Refrigerator - Service Manual: LMX25964 Ice Maker & Dispenserp. 20, 27

More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Where this code is documented

180 manuals in the MyPros+ library document this code for LG refrigerator.

Models covered by the manuals that document this code

More models are covered than are listed here.

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