How do I fix error code r dH on a LG refrigerators?

1. undefined: Check door gasket for damage. If gasket is damaged, replace the door gasket. 2. undefined: Measure heater resistance at CON9 pins 7~13 (Test Mode 1). Expected 105~117 ohm for a good heater. 3. undefined: If resistance is out of range, the Fuse-M may be open. Change Fuse-M. 4. undefined: Check defrost sensor resistance at CON4 pins 20~19. Expected ~22k ohm. If open or 0 ohm, replace the defrost sensor. 5. undefined: Enter Test Mode 3 (press test button 3 times). Measure voltage at CON9 pins 7~13. Expected 112~116V. 6. undefined: If voltage is not 112~116V in Test Mode 3, check input voltage. If input voltage is OK, replace the Main PCB. 7. undefined: Enter Test Mode 1. Measure voltage at CON9 pins 7~13. Expected 0V. 8. undefined: If voltage is not 0V in Test Mode 1, replace the Main PCB. 9. undefined: If all checks pass, replace the refrigerator.

LG Refrigerators2020–present

Error Code r dH

Refrigerator Defrost Heater Error — defrost heater or Fuse-M failure; refrigerator defrost sensor did not reach 41F (5C) within 80 minutes

Moderate

Address soon - your appliance may not work properly

Also displayed as: r dH

How to Fix

1
Check door gasket for damage. If gasket is damaged, replace the door gasket.
2
Measure heater resistance at CON9 pins 7~13 (Test Mode 1). Expected 105~117 ohm for a good heater.
3
If resistance is out of range, the Fuse-M may be open. Change Fuse-M.
4
Check defrost sensor resistance at CON4 pins 20~19. Expected ~22k ohm. If open or 0 ohm, replace the defrost sensor.
5
Enter Test Mode 3 (press test button 3 times). Measure voltage at CON9 pins 7~13. Expected 112~116V.
6
If voltage is not 112~116V in Test Mode 3, check input voltage. If input voltage is OK, replace the Main PCB.
7
Enter Test Mode 1. Measure voltage at CON9 pins 7~13. Expected 0V.
8
If voltage is not 0V in Test Mode 1, replace the Main PCB.
9
If all checks pass, replace the refrigerator.

This Error Applies To

LG LRMVS3006D Series Refrigerators (2020) (2020–present)

Service manual exact match: LRMVC2306SService manual exact match: LRMVC2306DService manual exact match: LRMDS3006DService manual exact match: LRMDS3006SService manual exact match: LRMVS3006DService manual exact match: LRMVS3006SService manual exact match: LRMDC2306SService manual exact match: LRMDC2306D

Related Error Codes

E FS

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Freezer Defrost Sensor Error — short or open circuit in the freezer defrost sensor

r dS

Refrigerator Defrost Sensor Error — short or open circuit in the refrigerator defrost sensor

E HS

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