LG Refrigerator Not Cooling or Compressor Not Running? Main Control Board EBR81182790 – Restore Full Operation Fast

A failed main control board is one of the most common causes of an LG refrigerator that stops cooling, has a compressor that won’t run, displays error codes, or loses all function despite having power. In LG refrigerators, the main PCB assembly is the central control unit that manages the compressor, fans, defrost cycle, temperature sensors, and display. When it fails, the refrigerator may stop cooling entirely, run continuously without reaching temperature, display fault codes, or appear completely dead. ⚡ Common failure point in LG refrigerators — especially after power surges or compressor-related events. Part EBR81182790 is the genuine OEM main PCB assembly that restores full refrigerator control and operation.

❓ Is This the Right Part?

This is the correct fix if ALL of the following are true:

• ✔ The refrigerator has power — the display or interior light works
• ✔ The compressor, fans, or defrost system are confirmed not receiving correct signals
• ✔ Error codes point to a control board or communication fault
• ✔ ONLY problem is loss of cooling, compressor not starting, or full system failure with power present

Not sure? Send us your model number — we’ll confirm before you order.

🔧 Common Symptoms

• Refrigerator has power but is not cooling at all
• Compressor does not start or run despite correct temperature settings
• Display shows error codes or is completely blank
• Fans do not run or run continuously without cycling
• Defrost cycle fails, causing ice buildup in the freezer section
• Refrigerator worked normally, then stopped after a power surge or outage

✔ If these symptoms match, this is the most likely failed component in the system.

✔ In most cases, replacing this main control board restores full refrigerator operation immediately.

📦 Part Details

• Part Number: EBR81182790
• Type: Refrigerator Main PCB Control Board Assembly — OEM LG replacement
• Brands: LG

⚙️ Installation

Skill Level: Advanced — 45–60 minutes. Disconnect power before servicing. The main PCB is typically located in the rear of the refrigerator or behind the control panel. Photograph all wire harness connections before disconnecting, remove the board mounting hardware, swap the new EBR81182790 board in, reconnect all harnesses, and restore power. Allow the refrigerator 24 hours to reach operating temperature before evaluating performance.

✓ Compatible Models

Confirm compatibility with your LG refrigerator model number before ordering — PCB assemblies are model-specific and must match exactly. Contact us to verify your model number before ordering.

💡 Pro Tip