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Error code reference

LG Refrigerator Error Code CL E

Low side cycle leakage detected by low side refrigerant leak, bad compressor, or long time door open causing…

LG codesLG refrigerator codes

Low side cycle leakage detected by low side refrigerant leak, bad compressor, or long time door open causing no cooling.

First step from the service manual

Use SVC App Step 1 to determine if it is compressor or sealed system problem; if no SVC App, check temperature using temperature gun, then check voltage for PCB problem.

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

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
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What CL E means on a LG refrigerator

The CL E error code on an LG refrigerator indicates that the control system has detected a low side cycle leakage condition. This means the refrigerant circuit on the low pressure side of the sealed system is not maintaining the pressure or temperature performance expected during normal operation. The refrigerator's PCB monitors cooling performance over time, and when temperatures fail to reach target levels within defined parameters, it flags this code as evidence that refrigerant is not circulating effectively through the evaporator side of the system.

There are three primary root causes the system associates with this code. First, a refrigerant leak on the low side of the sealed system will reduce refrigerant charge, causing inadequate evaporator cooling. Second, a failing or failed compressor may be unable to generate sufficient pressure differential to move refrigerant through the circuit, mimicking the symptoms of a leak. Third, a door left open for an extended period can cause the refrigerator to lose so much thermal mass that the compressor cannot recover, triggering the code even when the sealed system is intact.

Diagnosis begins by using the LG SVC App to run a guided diagnostic, which can help isolate whether the fault lies in the compressor or the sealed system itself. Without the SVC App, a technician should use a temperature gun to check actual evaporator and compartment temperatures, then measure voltage at the PCB to rule out a control board supply issue. Identifying the true cause before ordering parts is critical, as sealed system repairs and compressor replacements are among the more costly refrigerator repairs.

Source: manufacturer service documentation.

Common causes of CL E

  1. 01

    Low Side Refrigerant Leak

    Part replacement

    A leak in the low pressure side of the sealed refrigerant circuit reduces the refrigerant charge, preventing the evaporator from reaching target temperatures. A technician can confirm this by checking evaporator temperature with a temperature gun and performing a leak detection test on the sealed system.

  2. 02

    Failing or Failed Compressor

    Part replacement

    A compressor that cannot generate adequate pressure will produce symptoms identical to a refrigerant leak, with the evaporator staying warm and the refrigerator compartment failing to cool. The LG SVC App diagnostic or amperage and voltage testing at the compressor terminals can help isolate this cause.

  3. 03

    Door Left Open for Extended Period

    Wiring / connection

    If a refrigerator or freezer door is left open long enough, the compartment temperature rises beyond what the compressor can recover from within normal cycle times, triggering the CL E code even when the sealed system is fully intact. Closing the door and allowing the unit to run through several cycles may clear the condition.

  4. 04

    PCB or Control Board Fault

    Part replacement

    A faulty main PCB can incorrectly interpret sensor data or fail to properly control compressor operation, resulting in a false CL E reading. Checking supply voltage at the PCB is a recommended step to rule this out before pursuing sealed system repairs.

See the test procedure for each cause

Frequently asked questions about CL E

What does CL E mean on a LG refrigerator?
CL E indicates that the LG refrigerator has detected a low side cycle leakage condition, meaning the cooling system is not performing as expected. The most common causes are a refrigerant leak on the low side of the sealed system, a compressor that is failing, or a door that was left open long enough to prevent normal cooling recovery. This code requires hands-on diagnosis to determine the exact cause before any repair can be made.
Can I fix a CL E error on my LG refrigerator myself?
If the code was triggered by a door left open for an extended period, you may be able to resolve it simply by closing all doors and allowing the refrigerator several hours to recover. However, if the cause is a refrigerant leak or a failing compressor, those repairs require EPA-certified technicians and specialized tools that are not practical for home repair. Attempting to open or modify a sealed refrigerant system without proper certification is both dangerous and illegal in most jurisdictions.
Is it safe to keep using my LG refrigerator when CL E is displayed?
When CL E is active, the refrigerator is likely not maintaining safe food storage temperatures, which means perishable food could spoil without obvious warning. It is not safe to rely on the refrigerator for food storage until the fault is diagnosed and corrected. You should check compartment temperatures with a thermometer and transfer perishables to another cooling source if temperatures are above 40 degrees Fahrenheit.
Will resetting my LG refrigerator clear the CL E code?
A power reset may temporarily clear the CL E code, but if the underlying cause is a refrigerant leak or a failing compressor, the code will return once the refrigerator attempts another cooling cycle. Resetting is only a lasting solution if the code was triggered by an open door event and the cooling system is otherwise functioning normally. A reset should be followed by monitoring compartment temperatures closely to confirm actual cooling is occurring.
How much does it cost to repair a CL E error on an LG refrigerator?
Repair costs vary widely depending on the root cause. If the issue is a compressor failure, parts and labor can range from several hundred dollars to over one thousand dollars depending on the model and local labor rates. Sealed system refrigerant repairs, including leak detection and recharge, typically fall in a similar range. A PCB replacement is generally less expensive, while a door seal adjustment or no-fault reset would involve only a diagnostic service call fee.

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