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Error code reference

LG Refrigerator Error Code F-10-ⓑ

Ice Room fan motor error-feedback signal line contact error, motor wire separation, or motor failure during fan operation.

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What the F-10-ⓑ error code actually means

Your LG refrigerator is detecting a problem with the small fan inside the ice-making section. This fan keeps air moving to help the ice maker work properly, and the refrigerator's control board is not receiving the signal it expects from that fan. This could mean the fan has stopped working, a wire has come loose, or there is a connection problem that needs to be checked.

Diagnostic procedure

The full F-10-ⓑ procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Measure voltage at MAIN PCB CN76-2 (Black) ↔ CN76-1 (Gray); shall be between 6V-12V.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of F-10-ⓑ

Ranked by how often they cause this code
  1. 1Loose or disconnected wiring harness
  2. 2Feedback signal line contact error
  3. 3Failed ice room fan motor
  4. 4Wiring harness damage
  5. 5Main PCB output fault

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Questions people ask about F-10-ⓑ

What does F-10-ⓑ mean on a LG refrigerator?
F-10-ⓑ is an ice room fan motor error on LG refrigerators. The code indicates that the main control board detected a problem with the ice compartment fan during operation, which can be caused by a feedback signal line contact failure, a disconnected or damaged motor wire, or a failed fan motor. The board monitors a feedback signal from the motor to confirm it is running, and any interruption in that signal triggers this fault code.
Is it safe to use my LG refrigerator while it shows the F-10-ⓑ error?
The ice room fan plays a key role in maintaining proper airflow within the ice-making compartment. Running the refrigerator with this error active means ice production will likely be impaired or completely stopped. The main fresh food and freezer sections may continue to operate, but it is best to have the fault diagnosed promptly to avoid any secondary effects from reduced airflow in that zone.
How much does it cost to repair the F-10-ⓑ error on a LG refrigerator?
Repair costs vary depending on the root cause. If the fix involves simply reseating a connector or repairing a wire, costs may be limited to a service call fee, typically in the range of $75 to $150. Replacing the ice room fan motor generally adds $50 to $150 in parts costs on top of labor. A main PCB replacement, if required, is the most expensive scenario and can bring total repair costs into the $200 to $500 range or higher depending on the model and technician rates.
Can I fix F-10-ⓑ on my LG refrigerator myself?
Some causes of F-10-ⓑ can be addressed without professional help, particularly if the issue is a loose connector at the main PCB's CN76 port. Checking that the harness is firmly seated and inspecting visible wiring for damage are reasonable DIY steps. However, testing voltage at the PCB connector and replacing the fan motor or control board require comfort with electrical diagnosis and disassembly, which may be better suited to a qualified technician.
Will resetting my LG refrigerator clear the F-10-ⓑ error code?
A reset may temporarily clear the error code from the display, but if the underlying fault, such as a failed motor, damaged wire, or poor connector contact, has not been corrected, the F-10-ⓑ code will return once the refrigerator attempts to operate the ice room fan again. A reset is useful for confirming whether the fault is intermittent, but it does not substitute for proper diagnosis and repair.

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