Code: C-A2♨️ Samsung Oven

Samsung Oven C-A2 Error Code: Cooling Motor Operating Abnormally (Meaning, Causes, Fixes)

Reviewed 2026-10-23 · Based on 4 manufacturer & service sources

What the code means

Samsung's built-in wall oven owner's manuals (for example the NV51T5511 series) list C-A2 as "The cooling motor is operating abnormally" with the solution "Call for service." Dacor, Samsung's premium brand, lists the same code on its combination wall oven as "Cooling motor is abnormally operated." The cooling motor drives the fan that pulls air through the cabinet and around the control area so the electronics don't overheat; it is not the convection fan inside the oven cavity. Unlike codes such as C-21 or C-30, Samsung gives no owner reset step for C-A2. Samsung's NV51K7770D service manual tells technicians to check that the wire between the wall main PCB (connector CN202) and the motor connector is correctly connected, reconnect it if not, and then check the cooling motor's operation. Codes can vary between models, so check the information-code table in your own manual.

Likely causes

Safe DIY checks

⚠ Before you start

Unplug the appliance or switch off its breaker before opening panels.

  1. Turn the oven off and note exactly what the display shows (C-A2) and when it appeared, for example during a bake or self-clean.
  2. Samsung's owner's manual says to call for service for C-A2, and there's no owner reset listed for it. Don't keep cooking with the code showing, since the cooling fan protects the controls from heat.
  3. If you want to rule out a one-off glitch, switch the oven's circuit breaker off for at least 30 seconds and back on (Samsung's general step for its other information codes). If C-A2 comes back, stop and book service.
  4. Write down the model and serial number from the label (usually visible when the oven door is open) before you call, so the technician can bring the right cooling motor.
  5. Leave the connector and motor checks to a technician. On a built-in wall oven they mean disconnecting power, pulling the oven out of the cabinet and opening the back cover, and the oven runs on 240 V.

🛠 When to call a pro

  • Any time C-A2 shows. Samsung's only listed solution is to call for service.
  • C-A2 returns after a power reset.
  • You hear the cooling fan grinding, rattling or not running at all after the oven has been on, or the control panel area feels unusually hot.
  • The oven is under warranty. Samsung's US warranty service goes through a Samsung authorized service center.

Parts that commonly fix it

Always match the part number to your exact model.

⚙

Samsung wall oven cooling fan motor (exact part for your model number)

Only after a technician confirms the motor itself has failed, not just a loose connector. Match the part to your oven's model number, since cooling motors differ between single, double and combination wall ovens.

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⚙

Samsung oven main control board (exact part for your model number)

Only if the motor and wiring test good and the technician traces C-A2 to the board. Boards are expensive, so confirm the diagnosis first.

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Sources

  1. Samsung NV51T5511 built-in electric wall oven owner's manual, Troubleshooting information codes (C-A2: the cooling motor is operating abnormally; call for service; via P.C. Richard)
  2. Dacor (Samsung) DOC30M977DS combination wall oven manual, Information codes (C-A2: cooling motor is abnormally operated; call for service)
  3. Samsung NV51K7770D series service manual, 4-1 Failure Display Codes, page 47 (C-A2: check wiring between wall main PCB CN202 and motor connector, reconnect, check cooling motor operation; via ManualsLib)
  4. Samsung US: Range or wall oven error codes (power off and on, breaker off 30 seconds, then request service)

Last reviewed 2026-10-23. Always confirm against the manual for your exact model number.