Error Code E Sd
Sub PCB communication error — communication error between main MICOM and Sub MICOM. Causes: defect of Tx or Rx.
Moderate
Address soon - your appliance may not work properly
Also displayed as: E Sd
How to Fix
- 1
Step 1: Check all loose connections between Sub PCB and Main PCB.
- 2
Step 2: Measure voltage at Sub CON1 8th Pin ~ 33rd Pin. If reads 0V or 5V (not fluctuating), check Sub PCB connection; if connection OK, change Sub PCB.
- 3
Step 3: Measure voltage at Sub CON1 10th Pin ~ 33rd Pin. If reads 0V or 5V (not fluctuating), check Sub PCB connection; if connection OK, change Sub PCB.
- 4
Step 4: Measure voltage at Main CON3 1st Pin ~ 15th Pin. If reads 0V or 5V (not fluctuating), check display PCB connection and change Display PCB.
- 5
Step 5: Measure voltage at Main CON3 3rd Pin ~ 15th Pin. If reads 0V or 5V (not fluctuating), check display PCB connection and change Display PCB.
- 6
Step 6: If all voltages are correct, explain to customer — Sub PCB communication is normal.
Other Error Codes for LRYXC2606D
Defect of freezer sensor — short-circuit or disconnection of freezer sensor
Defect of ice-room sensor or ice maker sensor — short-circuit or disconnection
Defect of freezer defrost sensor — short-circuit or disconnection of defrost sensor
Defect of UVC LED — UVC LED disconnected or UVC LED failure. Check UVC LED connection.
Defect of room temperature sensor (RT sensor) — short-circuit or disconnection
Defect of humidity sensor — short-circuit or disconnection of humidity sensor
Defect of flow meter or lack of water supply — malfunction of flow meter. Check connection of flow meter and water supply.
Defect of freezer craft ice maker sensor — short-circuit or disconnection of craft ice maker sensor