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

1. undefined: Check door gasket for damage. If damaged, replace the door gasket. 2. undefined: Measure heater resistance at CON9 pins 7-13. Expected: 105~117 ohm. If out of range, change Fuse-M. 3. undefined: Check Defrost Sensor resistance at CON4 pins 20-19. Should be 22k ohm at room temp; if OFF replace defrost sensor. 4. undefined: Enter Test Mode 3 (push test button 3 times). Measure heater voltage at CON9 pins 7-13. Expected: 112V~116V. If absent, check input voltage; if input OK replace Main PCB. 5. undefined: Enter Test Mode 1 (push test button 1 time). Measure heater voltage at CON9 pins 7-13. Expected: 0V. If not 0V, replace Main PCB.

LG Refrigerators

Error Code r dH

Refrigerator Defrost Heater Error — Refrigerator failed to defrost within 80 minutes

Moderate

Address soon - your appliance may not work properly

Also displayed as: dH r

How to Fix

1
Check door gasket for damage. If damaged, replace the door gasket.
2
Measure heater resistance at CON9 pins 7-13. Expected: 105~117 ohm. If out of range, change Fuse-M.
3
Check Defrost Sensor resistance at CON4 pins 20-19. Should be 22k ohm at room temp; if OFF replace defrost sensor.
4
Enter Test Mode 3 (push test button 3 times). Measure heater voltage at CON9 pins 7-13. Expected: 112V~116V. If absent, check input voltage; if input OK replace Main PCB.
5
Enter Test Mode 1 (push test button 1 time). Measure heater voltage at CON9 pins 7-13. Expected: 0V. If not 0V, replace Main PCB.

This Error Applies To

LG LRMDS3006D Series Refrigerators

Service manual exact match: LRMDS3006DService manual exact match: LRMDS3006SService manual exact match: LRMVS3006DService manual exact match: LRMVS3006S