How do I fix error code Sd E on a LG refrigerators?

1. undefined: Check all connectors for loose connection. 2. undefined: Measure voltage at CON102 pins 3–5: expected not 0V and not 5V (active). If static, replace Display PCB. 3. undefined: Measure voltage at CON102 pins 3–9: expected not 0V and not 5V. If static, replace Sub PCB assembly. 4. undefined: Measure voltage at CON1 pins 2–CON5 pin 6: expected not 0V and not 5V. If static, replace Sub PCB assembly. 5. undefined: Measure voltage at CON1 pins 12–CON5 pin 6: expected not 0V and not 5V. If static, replace Display PCB. 6. undefined: If all voltages are correct: explain to customer.

LG Refrigerators

Error Code Sd E

Communication Error (Display PCB to Ice Maker Sub PCB)

Moderate

Address soon - your appliance may not work properly

Also displayed as: Sd E

How to Fix

1
Check all connectors for loose connection.
2
Measure voltage at CON102 pins 3–5: expected not 0V and not 5V (active). If static, replace Display PCB.
3
Measure voltage at CON102 pins 3–9: expected not 0V and not 5V. If static, replace Sub PCB assembly.
4
Measure voltage at CON1 pins 2–CON5 pin 6: expected not 0V and not 5V. If static, replace Sub PCB assembly.
5
Measure voltage at CON1 pins 12–CON5 pin 6: expected not 0V and not 5V. If static, replace Display PCB.
6
If all voltages are correct: explain to customer.