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Error code reference

GE Refrigerator Error Code Lc Er

No communication for 20 seconds between integrated circuits (IC Chips) on the main board

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No communication for 20 seconds between integrated circuits (IC Chips) on the main board. Pantry room control will also flash.

First step from the service manual

Check communication circuit failure on the main board.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What Lc Er means on a GE refrigerator

The Lc Er code on a GE refrigerator indicates a communication failure between integrated circuits (IC chips) on the main control board. Specifically, the board has detected an interruption or complete loss of data communication lasting 20 seconds or longer between these internal chips. The main control board relies on these IC chips to coordinate functions across the refrigerator, and when that internal communication link breaks down, the board flags the fault. A secondary indicator of this error is the pantry room control flashing simultaneously, which confirms the fault originates at the board level rather than an external sensor or peripheral component.

The most likely root cause is a failure within the main control board itself. The IC chips may have developed solder joint failures, internal component degradation, or circuit trace damage that interrupts the communication bus. Power surge damage is a common contributor, as voltage spikes can compromise the delicate communication circuitry on the board without causing visible burn marks. Loose or corroded board connectors can also interrupt the signal path between chips, so the communication circuit and its associated wiring should be inspected carefully before condemning the board outright.

Diagnostic work should begin with a thorough inspection of the main board for visible damage, including swollen capacitors, burned traces, or discolored components. Connector pins leading to and from the board should be checked for corrosion, looseness, or bent contacts. If the wiring and connectors appear intact and secure, the main control board is the primary suspect and will typically need to be replaced to resolve the fault.

Source: manufacturer service documentation.

Common causes of Lc Er

  1. 01

    Failed main control board

    Part replacement

    Internal IC chip failure or damaged communication circuitry on the main board is the most frequent cause of this code. The board may show visible signs of damage such as burned components or swollen capacitors, but internal failures can also occur without visible indicators.

  2. 02

    Power surge damage

    Part replacement

    A voltage spike can disrupt the communication circuitry between IC chips on the main board without leaving obvious burn marks. If the error appeared after a power outage or storm, surge damage should be considered a likely cause.

  3. 03

    Loose or corroded board connectors

    Wiring / connection

    Connectors that link the main board to other components can develop corrosion or work loose over time, interrupting the communication circuit. Inspect all connectors at the main board for secure seating and clean contact surfaces.

  4. 04

    Damaged wiring harness

    Part replacement

    Wiring leading to or from the main control board can suffer from chafing, pinching, or rodent damage, which can break the communication signal path. Trace the harness visually and check for any visible breaks or wear points.

See the test procedure for each cause

Frequently asked questions about Lc Er

What does Lc Er mean on a GE refrigerator?
Lc Er means the main control board has lost communication between its internal integrated circuits (IC chips) for 20 or more seconds. When this fault is active, the pantry room control will also flash as a secondary indicator. The error points to a problem within the main board's communication circuit, its connectors, or the wiring connected to it.
Can I fix the Lc Er error myself?
A homeowner or experienced DIYer can start by checking that all connectors at the main control board are fully seated and free of corrosion. If the connectors look good and the error persists, the main control board likely needs to be replaced, which is a more involved repair. Replacing the main board requires disconnecting power and carefully transferring wiring connections, so comfort with appliance repair work is important before attempting it.
Will resetting my GE refrigerator clear the Lc Er code?
Unplugging the refrigerator for a few minutes may temporarily clear the code, but if the underlying communication circuit failure on the main board remains, the error will return. A reset is a reasonable first step to confirm whether the fault is intermittent, but a persistent Lc Er code requires hands-on diagnosis of the board and its connections.
Is it safe to keep using my refrigerator when Lc Er is displayed?
A communication failure between IC chips on the main board can affect the refrigerator's ability to properly regulate temperature and coordinate functions. Food safety could be at risk if the refrigerator is not maintaining correct temperatures. It is best to check that the unit is still cooling adequately and address the repair promptly rather than leaving it running unmonitored.
How much does it cost to fix a GE refrigerator showing Lc Er?
If the repair requires a new main control board, parts alone typically range from roughly $100 to $300 depending on the specific model, with professional labor adding another $100 to $200 in most cases. If the issue turns out to be a loose connector or minor wiring fix, costs can be significantly lower. Getting a diagnosis from a qualified technician before purchasing parts is recommended to avoid unnecessary expense.

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