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Error code reference

LG Refrigerator Error Code 22

Fan motor system abnormality in CR compartment

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Fan motor system abnormality in CR compartment - contact failure on the feedback signal line, motor wire missing, or defect of the motor itself when operating the relevant fan motor.

First step from the service manual

Check CR compartment fan motor feedback signal line, motor wire, and motor operation.

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

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What 22 means on a LG refrigerator

Error code 22 on an LG refrigerator indicates a fan motor system abnormality in the CR (Cooling Room) compartment. The control board monitors feedback signals from the fan motor to confirm it is spinning at the correct speed. When the board detects a problem with this feedback signal, it logs error code 22 and may reduce cooling performance or shut down the fan entirely to protect the system.

The fault can originate from three distinct failure points. First, there may be a contact failure on the feedback signal line, meaning the wiring connector between the fan motor and the control board has become loose, corroded, or damaged. Second, a motor wire may be physically missing or broken, interrupting the circuit entirely. Third, the fan motor itself may have an internal defect, such as a failed winding or bearing seizure, that prevents it from operating correctly and sending a valid feedback signal back to the board.

Diagnosing this code requires inspecting the CR compartment fan motor, tracing the feedback signal wiring harness from the motor back to its connector, and checking the connector pins for corrosion or looseness. If the wiring and connectors check out, testing the motor directly by measuring its resistance or applying power will determine whether the motor itself has failed. A seized or open motor must be replaced, while a loose connector can often be reseated or repaired.

Source: manufacturer service documentation.

Common causes of 22

  1. 01

    Loose or corroded feedback signal connector

    Wiring / connection

    The connector linking the fan motor's feedback signal wire to the control board can work loose over time or develop corrosion on the pins. Inspect the connector for looseness, bent pins, or greenish corrosion and reseat or clean it as needed.

  2. 02

    Damaged or broken motor wiring

    Wiring / connection

    A wire in the fan motor harness may be pinched, cut, or broken, interrupting the feedback signal circuit. Visually trace the entire wire run from the motor to the connector and check for any visible damage.

  3. 03

    Failed CR compartment fan motor

    Part replacement

    The fan motor itself may have seized bearings or a failed internal winding, preventing it from spinning and generating a valid feedback signal. If the motor does not spin freely by hand or shows open resistance across its terminals, it needs to be replaced.

  4. 04

    Ice buildup blocking fan operation

    Wiring / connection

    Excessive frost accumulation around the CR fan can physically prevent the blade from turning, which the control board interprets as a motor fault. Check for ice buildup around the fan assembly and defrost the compartment if present.

  5. 05

    Control board fault

    Part replacement

    If the wiring, connectors, and motor all test correctly, the main control board may be misreading the feedback signal due to a board-level failure. This is the least common cause and should only be considered after all other components have been ruled out.

See the test procedure for each cause

Frequently asked questions about 22

What does 22 mean on a LG refrigerator?
Error code 22 on an LG refrigerator indicates a fan motor system abnormality in the CR (Cooling Room) compartment. The refrigerator has detected a problem with the fan motor's feedback signal, which could be caused by a loose or broken wire, a bad connector, or a failed motor. The refrigerator uses this feedback signal to confirm the fan is running properly, and when it cannot detect a valid signal, it logs code 22.
Can I fix error code 22 on my LG refrigerator myself?
Some causes of error code 22 are DIY-friendly, such as reseating a loose connector or thawing out ice that is blocking the fan. If the wiring harness is damaged or the fan motor itself has failed, replacing those components requires basic electrical knowledge and comfort working inside the refrigerator cabinet. If you are unsure about testing motor resistance or handling wiring connectors, a qualified appliance repair technician is the safer option.
Is it safe to keep using my LG refrigerator when error code 22 is showing?
Continuing to run the refrigerator with error code 22 active is not recommended for extended periods. A non-functioning CR compartment fan can lead to inadequate cooling, which puts food safety at risk. It is best to address the fault promptly and move perishables to another cold source in the meantime if cooling has been significantly reduced.
Will resetting my LG refrigerator clear error code 22?
A power reset may temporarily clear the error code display, but if the underlying fault with the fan motor, wiring, or connector is still present, the code will return once the refrigerator resumes normal operation. A reset is useful as a first step to confirm whether the fault is intermittent, but it does not repair the root cause. The fan motor feedback circuit must be inspected and repaired to permanently clear the code.
How much does it cost to repair error code 22 on an LG refrigerator?
Repair costs vary depending on what is causing the fault. If the fix is as simple as reseating a connector, there may be little to no parts cost, though a service call fee typically runs in the range of $75 to $150. If the CR compartment fan motor needs to be replaced, parts and labor combined generally range from $150 to $350 depending on the specific model and local labor rates. A control board replacement, if needed, will be on the higher end of that range or beyond.

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