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Error code reference

Samsung Refrigerator Error Code COMP MOTOR RESTRICTION ERROR

Compressor motor is constrained/locked.

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What the COMP MOTOR RESTRICTION ERROR error code actually means

This error means your refrigerator's compressor, the component that keeps things cold by circulating refrigerant, has stopped spinning or is stuck and can't start properly. The refrigerator's control system detected the problem and shut down the compressor to prevent further damage. Until this is resolved, your refrigerator will not cool correctly.

Diagnostic procedure

The full COMP MOTOR RESTRICTION ERROR procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check if compressor and cycle are normal; check input voltage; check soldering of inverter PCB for short-circuited parts.
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 COMP MOTOR RESTRICTION ERROR

Ranked by how often they cause this code
  1. 1Failed or seized compressor
  2. 2Inverter PCB solder joint failure or short circuit
  3. 3Incorrect or low input voltage
  4. 4Refrigerant flooding or liquid slugging
  5. 5Wiring harness fault between inverter PCB and compressor

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Questions people ask about COMP MOTOR RESTRICTION ERROR

What does COMP MOTOR RESTRICTION ERROR mean on a Samsung refrigerator?
This error code means the refrigerator's control system has detected that the compressor motor is constrained or locked and cannot spin normally. The inverter board monitors compressor operation and shuts it down when it detects a stall condition to prevent further electrical or mechanical damage. The underlying cause can be a seized compressor, a faulty inverter PCB, or an input voltage problem.
Is it safe to keep using my refrigerator when this error appears?
No, you should not continue using the refrigerator normally when this error is active. The compressor is not running, so the unit is not cooling, and food safety will be compromised within a few hours. Additionally, repeated failed start attempts by a locked compressor can cause further damage to the inverter PCB and compressor windings.
How much does it cost to repair a COMP MOTOR RESTRICTION ERROR on a Samsung refrigerator?
Repair costs vary significantly depending on the root cause. Inverter PCB replacement typically falls in the range of $150 to $400 including parts and labor. Compressor replacement is the most expensive scenario, often ranging from $400 to $700 or more depending on the model and local labor rates. If the fault is limited to a wiring issue or a correctable solder joint, the cost can be considerably lower.
Can I fix the COMP MOTOR RESTRICTION ERROR myself?
Some causes, such as low input voltage or a loose wiring connector, can be identified and corrected by a knowledgeable DIYer with a multimeter and basic tools. However, inspecting and reworking solder joints on the inverter PCB requires soldering skills and appropriate equipment. A seized compressor or a failed inverter board will require replacement parts and, in the case of the compressor, EPA-certified refrigerant handling by a licensed technician.
Will resetting the refrigerator clear the COMP MOTOR RESTRICTION ERROR?
A power reset may temporarily clear the error code and allow the compressor to attempt a restart, but if the underlying cause is still present, the error will return quickly. A reset alone does not fix a seized compressor, a damaged inverter board, or a wiring fault. Use a reset only as part of the diagnostic process, not as a permanent solution.

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