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

1. undefined: Check door gasket for damage. If door gasket is damaged, replace the door gasket. 2. undefined: Check Defrost control part (Fuse-M). Measure heater resistance at CON9 pins 5-13. Expected: 42~500 ohm. If out of range, change Fuse-M. 3. undefined: Check Defrost Sensor resistance at CON9 pins 5-13. Nominal 22k ohm at room temp or OFF indicates defective sensor — replace sensor. 4. undefined: Enter Test Mode 3 (push test button 3 times, display shows 33 33). Measure heater voltage at CON9 pins 5-13. Expected: 112V~116V. If voltage is not present, check input voltage supply and replace Main PCB if input is OK. 5. undefined: Enter Test Mode 1 (push test button 1 time). Measure heater voltage at CON9 pins 5-13. Expected: 0V. If voltage is not 0V, replace Main PCB.

LG Refrigerators

Error Code F dH

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

Moderate

Address soon - your appliance may not work properly

Also displayed as: dH F

How to Fix

1
Check door gasket for damage. If door gasket is damaged, replace the door gasket.
2
Check Defrost control part (Fuse-M). Measure heater resistance at CON9 pins 5-13. Expected: 42~500 ohm. If out of range, change Fuse-M.
3
Check Defrost Sensor resistance at CON9 pins 5-13. Nominal 22k ohm at room temp or OFF indicates defective sensor — replace sensor.
4
Enter Test Mode 3 (push test button 3 times, display shows 33 33). Measure heater voltage at CON9 pins 5-13. Expected: 112V~116V. If voltage is not present, check input voltage supply and replace Main PCB if input is OK.
5
Enter Test Mode 1 (push test button 1 time). Measure heater voltage at CON9 pins 5-13. Expected: 0V. If voltage is 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