Error Code F dH

Failed Defrosting — Defrost heater, temperature fuse short circuited or unplugged connector. Error indicated 4 hours after failure occurs.

Also displayed as: F dH

How to Fix

1. 1

   Step 1: Enter Test Mode 2 (push test button twice). Check heater voltage at CON9 7th~13th pin. Expected: 120V.

2. 2

   Step 2: If heater voltage is not 112~116V in Test Mode 2, replace the Main PCB.

3. 3

   Step 3: Check door gasket for damage. If door gasket is damaged, replace the door gasket.

4. 4

   Step 4: Check defrost control parts: verify Fuse-M resistance is 0 ohm (continuity) and Defrost Heater resistance is 39~44 ohm. If Fuse-M is open, change the Fuse-M.

5. 5

   Step 5: Enter Test Mode 1 (push test button once). Check heater voltage at CON9 7th~13th pin. Expected: 0V.

6. 6

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

7. 7

   Step 7: Check defrost sensor resistance. If resistance is 22k ohm or OFF (open), replace sensor or main PCB.

8. 8

   Step 8: If all checks pass, explain to customer.

This Error Applies To

LG LHSXS2706 Series Refrigerators