What Is the EBR86093742 LG Refrigerator Main Control Board Replacement?
The EBR86093742 is the main control board for LG refrigerators, mounted on the rear cabinet behind a lower access panel, though on some models the housing sits inside the fridge compartment on a side wall or ceiling. This replacement control board manages cooling performance, temperature regulation, and defrost cycles while coordinating compressor and fan operation based on sensor input. FailSafe Certified and backed by a 1-year warranty from Appliance Pro USA.
What Does the EBR86093742 Fix on a LG Refrigerator?
If your refrigerator is showing any of these issues, this board is a likely cause:
- Refrigerator not cooling or cooling inconsistently
- Temperature fluctuations between the fridge and freezer sections
- Control panel or display unresponsive or frozen
- Compressor not starting or running erratically
- Fans not operating correctly
- Defrost cycle or timer acting up
These symptoms point to the refrigerator control board as the most likely cause - but appliances are complex systems, and the same symptoms can occasionally stem from a sensor, switch, wiring harness, or motor issue. If a technician has identified the control board, or you've ruled out those components yourself, this board is your fix. When in doubt, contact us before you order - we're happy to walk you through some troubleshooting, and a photo of your board is usually all we need. A diagnosis from a local appliance technician works too.
How Do I Know If This Is the Right Board for My Refrigerator?
Check the sticker on the board itself, not just your fridge's model number. EBR86093742 printed on that sticker confirms it's the correct board for your unit. Your LG refrigerator part number is on the sticker on the original board - look for the EBR or CSP prefix.
Not sure? Send us a photo of your board and its sticker before you order and we'll verify it for free - same business day.
Compatible Refrigerator Models
This board is ordered by part number, not by appliance model. Send us your full model number and a photo of your board's sticker and we will confirm fitment before you buy - same business day.
This model list is for reference only. LG may change boards between production runs, so two appliances with the same model number can use different boards. Always order by the part number printed on your original board - it is the only identifier that decides.
Genuine OEM - FailSafe Certified™ Reconditioned
Every EBR86093742 board from Appliance Pro USA is a genuine OEM LG board restored to reliable working condition through the FailSafe Precision Protocol™, our 4-step recertification process built around what actually fails on this board:
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Failure Pattern Analysis - We've mapped the failure signatures specific to this board, identifying which components degrade and fail over time.
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Targeted Component Replacement - The components this board is known to lose are replaced before they get the chance to fail.
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Proactive Rebuild Standard - Known high-failure components are replaced with new parts on every board, regardless of whether they show a problem yet. Degraded parts don't ship.
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Final Certification - Every board is tested and certified to our internal FailSafe Precision Protocol standard for function and lifespan before it ships.
Key Features
- Genuine OEM LG main control board - not an aftermarket copy
- Controls compressor, fan, and defrost operation based on sensor input
- Mounts behind the rear access panel or, on some models, inside the fridge compartment
- Minor cosmetic wear may be present due to prior installation - it does not affect performance
Board Type and Function
This is the main control board for your LG refrigerator, acting as the central point that reads sensor data and decides how the cooling system responds. It regulates temperature in both the fridge and freezer compartments, manages the defrost cycle timing, and tells the compressor and fans when to run. When this board fails or glitches, the whole cooling system can act erratic, inconsistent, or stop responding altogether. Replacing it restores normal, coordinated operation across the unit.
Common LG Refrigerator Error Codes
If your LG refrigerator is displaying an error code, the table below describes what it typically indicates. Codes marked ★ are most directly associated with main control board failure. These are general LG codes and can vary by your exact model. Always confirm the exact meaning in your model's owner's manual or service guide before ordering any part.
| Code |
What It Means |
| ★ CO |
Communication failure between main control board and display board |
| ★ Er CF / CF |
Condenser fan feedback signal error - board not receiving fan confirmation signal |
| ★ 22 |
Compressor relay problem - board-managed compressor circuit fault |
| ★ dH |
Defrost cycle timed out - evaporator did not reach target temperature within 1 hour |
| Er FF |
Freezer evaporator fan failure - fan not circulating cold air in freezer |
| Er rF |
Refrigerator evaporator fan failure - fan not circulating air on fresh food side |
| Er FS |
Freezer temperature sensor failure |
| Er rS / r2 |
Refrigerator temperature sensor failure - upper (rS) or lower (r2) section |
| dS |
Defrost temperature sensor short or disconnection |
| Er IF / IS / It |
Ice maker fan (IF), temperature sensor (IS), or motor (It) failure |
| CH E / CL E |
Refrigerant leak detected - high-side (CH E) or low-side (CL E). Requires professional service |
| OF F |
Demo mode active - cooling disabled. Not an error. Deactivate via control panel hold sequence |
Error code definitions vary by LG model series. Always confirm the exact meaning in your refrigerator's owner's manual or service guide before purchasing any part.
★ = Most directly associated with main control board failure
How to Install a LG Refrigerator Main Control Board
Most people finish this install in under 30 minutes with basic hand tools. Disconnect power at the breaker first, then remove the Phillips-head screws holding the rear access panel in place to expose the board. Photograph the wiring harness before disconnecting anything, then release each connector by pressing its locking tab with a flathead screwdriver. Set the new board in place by aligning one side first and pressing the opposite side firmly into its locking tabs, then reconnect each harness using your reference photos and confirm they're fully seated. Use ESD precautions while handling the board, reinstall the access panel, and restore power. Give the refrigerator a few hours to stabilize before judging whether the repair worked.
Shipping
Every board is physically in stock - no backorders, no drop shipping. Orders placed before 4:00 PM EST ship the same business day. Tracking provided on every order.
Warranty
Backed by a 1-year warranty from Appliance Pro USA (registration required - the card is in the box). If the board fails due to a defect within the warranty period, we'll repair or replace it at no charge (shipping fees may apply). Warranty coverage is determined at Appliance Pro USA's discretion. Boards that have been tampered with, or with the verification seal (hologram or tamper-evident sticker) removed or damaged, are not eligible for warranty coverage. Damage caused by improper installation, electrical surges, or physical damage is not covered.
Returns
Returns are accepted within 30 days of delivery. Boards that are unopened and uninstalled, in original condition with the verification seal (hologram or tamper-evident sticker) intact, qualify for a full refund. If the board has been opened or installed, contact us before sending it back with a photo of the board you received, the reason for the return, and a photo of your original board's part-number label so we can verify fitment and approve the return. Boards returned used, altered, damaged, or with the verification seal missing may receive a partial refund in line with our return policy. Exchanges for the correct part are always available.
Not sure it's the board? Before you order, and before you return, contact us. We offer free troubleshooting help and can usually tell from a photo of your board and its symptoms whether this is the right part. Only a technician can fully diagnose your appliance.
