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Error code reference

Samsung Range Error Code C-F2

Communication between the Sub PCB and touch panel is interrupted, or touch key is shorted or open.

Samsung codesSamsung range codes

Communication between the Sub PCB and touch panel is interrupted, or touch key is shorted or open.

First step from the service manual

Check whether connector of Sub PCB (CN701) and touch film tail is connected normally.

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

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What C-F2 means on a Samsung range

The C-F2 error code on a Samsung range indicates a communication failure between the Sub PCB and the touch panel assembly. This communication link allows the main control system to receive input signals from the touch keys on the control panel. When this link is interrupted, the range cannot process user commands, and the error is triggered to prevent unintended operation. The Sub PCB communicates with the touch panel via a flexible touch film tail connected through connector CN701.

The two primary failure modes covered by this code are a broken communication path (open circuit) and a short circuit within the touch key circuitry. An open condition typically results from a disconnected or poorly seated connector, a damaged touch film tail, or a break in the wiring between the Sub PCB and the touch panel. A shorted condition usually points to a damaged touch film, a faulty touch panel, or contamination such as moisture or debris bridging contacts on the touch assembly.

The first diagnostic step is to inspect connector CN701 on the Sub PCB and verify that the touch film tail is fully and correctly seated. Loose, bent, or corroded connector pins at this junction are a frequent cause of the error and can often be resolved without replacing components. If the connector checks out, the touch film and Sub PCB should be examined for physical damage, burn marks, or signs of moisture intrusion before proceeding to component replacement.

Source: manufacturer service documentation.

Common causes of C-F2

  1. 01

    Loose or disconnected CN701 connector

    Wiring / connection

    The touch film tail connection at connector CN701 on the Sub PCB may have loosened due to vibration or improper reassembly. Inspect the connector for a secure, fully seated connection and reseat it if necessary.

  2. 02

    Damaged touch film tail

    Part replacement

    The flexible ribbon cable connecting the touch panel to the Sub PCB can develop cracks, kinks, or breaks, especially near the connector ends. Visually inspect the full length of the film tail for any signs of physical damage.

  3. 03

    Shorted or failed touch panel

    Part replacement

    A short circuit within the touch key assembly can occur due to moisture intrusion, physical impact, or component failure. If the touch panel surface is cracked or shows signs of liquid damage, the panel likely needs replacement.

  4. 04

    Faulty Sub PCB

    Part replacement

    If the connector and touch film tail are confirmed to be in good condition but the error persists, the Sub PCB itself may have a failed communication circuit. Check the board for visible damage such as burnt components or corrosion near CN701.

  5. 05

    Moisture or contamination on connector contacts

    Wiring / connection

    Grease, moisture, or debris on the CN701 connector pins or the touch film tail contacts can disrupt the communication signal. Clean the contacts carefully with electrical contact cleaner and allow them to dry completely before reconnecting.

See the test procedure for each cause

Frequently asked questions about C-F2

What does C-F2 mean on a Samsung range?
C-F2 indicates that communication between the Sub PCB and the touch panel has been interrupted, or that a touch key is experiencing a short or open circuit condition. The connection point to check first is connector CN701, where the touch film tail attaches to the Sub PCB. This error prevents the touch controls from functioning normally and needs to be diagnosed before the range can be used safely.
Can I fix the C-F2 error myself without calling a technician?
In some cases, yes. If the error is caused by a loose touch film tail at connector CN701, reseating the connector may resolve the issue without any parts or specialized tools. However, if the touch film, touch panel, or Sub PCB is damaged, those components will need to be replaced, which may require a technician depending on your comfort level with appliance repair.
Is it safe to use my Samsung range while the C-F2 error is displayed?
It is best to avoid using the range until the C-F2 error is resolved. A communication failure between the Sub PCB and touch panel means the control system may not accurately receive or process your input, which could lead to unintended behavior. Discontinue use and address the fault before resuming cooking.
Will resetting my Samsung range clear the C-F2 error?
A reset by disconnecting power for a few minutes may temporarily clear the error, but if the underlying issue with the connector, touch film, or touch panel is not corrected, the C-F2 code will return. A reset is useful for confirming whether the fault is intermittent, but it is not a repair solution.
How much does it cost to repair a C-F2 error on a Samsung range?
Repair costs vary depending on what component has failed. If only the connector needs reseating, the cost can be minimal or limited to a service call fee, typically in the range of $75 to $150. If the touch panel or Sub PCB requires replacement, parts and labor combined can range from $150 to $400 or more depending on the specific model and local labor rates.

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