Error Code F dH

Defrosting failure — defrost sensor does not reach 40°F (5°C) within 80 minutes after defrost starts. Causes: disconnected thermal fuse, defective defrost heater, defective heater relay, drain tube blockage.

Also displayed as: F dH

How to Fix

1. 1

   Step 1: Check door gasket for damage. If gasket is damaged, replace door gasket.

2. 2

   Step 2: Check defrost control parts. Measure heater resistance at CON9 5th Pin ~ 13th Pin in Test Mode 1. Expected resistance: 42~500 ohm. If out of range, proceed to Step 3.

3. 3

   Step 3: Activate Test Mode 3 (push test button 3 times). Measure voltage at CON9 5th Pin ~ 13th Pin. If voltage is 112~116V, heater voltage is correct.

4. 4

   Step 4: If voltage is NOT 112~116V in Test Mode 3, replace Main PCB.

5. 5

   Step 5: Activate Test Mode 1 (push test button 1 time). Measure voltage at CON9 5th Pin ~ 13th Pin. If voltage is 0V, heater circuit is correct.

6. 6

   Step 6: If voltage is NOT 0V in Test Mode 1, replace Main PCB.

7. 7

   Step 7: Check defrost sensor resistance. If sensor is open (OL) or reads ~22kΩ at room temperature, replace sensor.

8. 8

   Step 8: If all checks pass, explain to customer — unit is operating normally.

This Error Applies To

LG LRYXC2606 Series Refrigerators