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Error code reference

Samsung Range Error Code C-A2

BLDC motor operate information

Samsung codesSamsung range codes

BLDC motor operate information — cooling motor (upper display) or air intake motor (lower display) malfunction.

First step from the service manual

Operate Single Broil Hi within 1 minute; check display information location (upper = cooling motor, lower = air intake motor); check wire harness connection and voltage of Sub PCB CN200 (10VDC–14VDC).

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

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What C-A2 means on a Samsung range

The C-A2 error code on a Samsung range indicates a malfunction in one of two BLDC (brushless DC) motors in the cooling system. The specific motor involved depends on where the error appears on the display: if the code shows on the upper display, the fault is with the cooling motor; if it appears on the lower display, the fault is with the air intake motor. These motors are responsible for managing airflow around the control electronics and cooking cavity, preventing heat damage to sensitive components during high-heat cooking operations like broiling.

The Sub PCB (printed circuit board) at connector CN200 supplies and monitors the operating voltage for these motors. The expected voltage range at CN200 is 10VDC to 14VDC. If the voltage falls outside this range, or if the motor fails to report proper operating feedback to the Sub PCB, the C-A2 code is triggered. BLDC motors rely on electronic commutation and send operational data back to the control board, so the fault can originate from the motor itself, the wiring harness, or the Sub PCB.

Diagnosing C-A2 requires activating the Single Broil Hi mode within one minute of the code appearing to determine which motor is affected based on display location. From there, the technician should inspect the wire harness connections between the affected motor and the Sub PCB CN200, and measure voltage at CN200 to confirm it falls within the 10VDC to 14VDC operating range. A reading outside that range points to a Sub PCB issue, while correct voltage with a non-functioning motor indicates motor failure.

Source: manufacturer service documentation.

Common causes of C-A2

  1. 01

    Failed BLDC motor (cooling or air intake)

    Part replacement

    The motor itself may have seized, burned out, or lost the ability to send operational feedback to the Sub PCB. This is the most direct cause of C-A2 and requires motor replacement.

  2. 02

    Loose or damaged wire harness connection

    Wiring / connection

    The wiring connecting the motor to Sub PCB connector CN200 may be loose, corroded, or damaged, interrupting the signal or power supply to the motor. Inspect connectors and harness routing carefully.

  3. 03

    Voltage out of range at Sub PCB CN200

    Part replacement

    If the voltage at CN200 is outside the 10VDC to 14VDC specification, the motor cannot operate correctly even if it is mechanically sound. This points to a failing or failed Sub PCB.

  4. 04

    Obstruction blocking motor or fan blade

    Wiring / connection

    Debris, grease buildup, or physical obstruction can prevent the motor from spinning freely, causing it to stall and trigger the fault code. Check the fan blade for restrictions before replacing components.

  5. 05

    Sub PCB failure

    Part replacement

    If wiring and voltage checks do not isolate the fault, the Sub PCB itself may have failed and is not properly supplying power or interpreting motor feedback signals at CN200.

See the test procedure for each cause

Frequently asked questions about C-A2

What does C-A2 mean on a Samsung range?
C-A2 indicates a malfunction in one of the BLDC cooling motors inside the range. If the code appears on the upper display, the cooling motor is at fault; if it appears on the lower display, the air intake motor is the issue. These motors regulate airflow to protect the oven's electronics during high-heat operation. The Sub PCB at connector CN200 monitors and powers these motors, and a fault is triggered when the motor's operating data falls outside expected parameters.
Can I fix the C-A2 error on my Samsung range myself?
Some causes of C-A2, such as a loose wire harness connection or a blocked fan blade, can be addressed by a knowledgeable DIYer comfortable working with appliance electronics. However, diagnosing the fault properly requires activating Single Broil Hi mode, identifying which motor is affected by display location, and measuring DC voltage at the Sub PCB connector CN200. Motor or Sub PCB replacement involves working near live components and is generally best handled by a qualified technician.
Is it safe to use my Samsung range when the C-A2 code is showing?
It is not recommended to continue using the range while C-A2 is active. The cooling and air intake motors protect the control electronics from heat damage during cooking. Operating the range without a functioning cooling motor, particularly during broiling or high-temperature use, risks damaging the Sub PCB or other electronic components and could create additional failures.
Will resetting the range clear the C-A2 error code?
A power reset may temporarily clear the C-A2 code from the display, but the error will return if the underlying motor or wiring fault is not repaired. Because C-A2 is tied to active motor performance monitoring during operation, the fault will reappear as soon as the range detects the same abnormal motor behavior again. A reset alone is not a fix.
How much does it cost to repair a Samsung range showing C-A2?
Repair costs vary depending on the root cause. If only a wire harness reconnection or minor obstruction clearance is needed, costs may be limited to a service call fee, typically in the range of $75 to $150. If the cooling motor or air intake motor requires replacement, parts and labor combined often run between $150 and $350. A Sub PCB replacement is generally the most expensive scenario, potentially ranging from $200 to $450 or more depending on the part and labor rates in your area.

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