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Error code reference

Samsung Multifunction Printer Error Code S4-2112

Fax memory is almost full.

Samsung codesSamsung multifunction printer codes

Fax memory is almost full.

First step from the service manual

Print or remove the received fax job in Secure Receive.

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

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What S4-2112 means on a Samsung multifunction printer

The S4-2112 error code on Samsung multifunction printers indicates that the fax memory is approaching its capacity limit. Samsung printers allocate a dedicated portion of onboard flash or DRAM memory specifically for storing incoming and outgoing fax data. When this reserved memory buffer fills beyond a critical threshold, the printer triggers S4-2112 to alert the user before the buffer reaches 100% capacity and new faxes can no longer be received or sent.

The most common scenario that leads to this condition is the accumulation of received faxes held in Secure Receive mode. Secure Receive is a privacy feature that holds incoming fax pages in memory rather than printing them immediately, requiring a PIN to release and print them. If faxes continue to arrive over an extended period without being printed or deleted, the stored page data consumes the available fax memory allocation and triggers this warning code.

Other contributing factors include large incoming fax jobs with high page counts or complex image data, which consume proportionally more memory per transmission. Until the stored fax data is either printed or deleted from the Secure Receive queue, new incoming faxes risk being rejected. The corrective action is straightforward: access the Secure Receive job list through the printer control panel, then print or delete the held fax jobs to free the memory buffer and clear the error.

Source: manufacturer service documentation.

Common causes of S4-2112

  1. 01

    Unprinted faxes in Secure Receive queue

    Wiring / connection

    Incoming faxes held in Secure Receive mode accumulate in memory over time without being released for printing. This is the most frequent cause, especially on printers where Secure Receive has been enabled and the queue has not been cleared regularly.

  2. 02

    Large volume of incoming fax jobs

    Wiring / connection

    A high number of incoming fax transmissions over a short period can fill the memory buffer quickly, particularly during business hours with heavy fax traffic. Reviewing and deleting older or unnecessary received faxes will recover capacity.

  3. 03

    High-complexity or high-page-count fax documents

    Wiring / connection

    Faxes containing dense graphics, photos, or a large number of pages consume significantly more memory per job than simple text faxes. A single large fax job can account for a disproportionate share of the available buffer.

  4. 04

    Pending outgoing fax jobs not yet transmitted

    Wiring / connection

    Outgoing faxes queued for delayed transmission or retrying after a failed send also occupy fax memory. Canceling or resending stuck outgoing jobs can help free up the buffer.

  5. 05

    Reduced available memory due to firmware or memory fault

    Wiring / connection

    In rare cases, a firmware issue or partial memory hardware fault can reduce the effective fax memory capacity, causing the threshold to be reached more quickly than expected. If clearing the queue does not resolve the issue, a firmware update or service inspection may be needed.

See the test procedure for each cause

Frequently asked questions about S4-2112

What does S4-2112 mean on a Samsung multifunction_printer?
S4-2112 is a warning that the fax memory on your Samsung multifunction printer is almost full. The printer reserves a dedicated memory buffer for storing fax data, and this code appears when that buffer is nearly exhausted. The most likely cause is faxes being held in the Secure Receive queue that have not yet been printed or deleted. Printing or removing those held fax jobs will clear the condition.
How do I fix the S4-2112 error on my Samsung printer?
Access the Secure Receive job list through the printer's control panel menu and print or delete the fax jobs stored there. This releases the memory they are occupying and should resolve the S4-2112 warning. Also check for any pending outgoing fax jobs that may be queued and consuming additional memory. Once the memory level drops below the threshold, the error should clear automatically.
Will resetting the printer clear the S4-2112 error?
A simple power cycle reset will not clear S4-2112 because the fax data stored in memory persists through restarts. The error will return as long as the memory buffer remains near capacity. You need to actively print or delete the stored fax jobs through the control panel to free memory and resolve the error. A factory reset would clear stored faxes, but this would result in permanent data loss of all held fax documents.
Is it safe to keep using the printer while S4-2112 is displayed?
Basic printing, copying, and scanning functions are not affected by S4-2112, so those operations can continue safely. However, the fax function is at risk: if the memory fills completely before you clear the queue, the printer will be unable to receive new incoming faxes and those transmissions will be lost. Addressing the error promptly is important if you rely on the fax feature.
How much does it cost to repair a Samsung printer showing S4-2112?
In most cases, S4-2112 requires no parts or paid repair at all, since it is resolved by printing or deleting faxes from the Secure Receive queue at no cost. If the error persists after clearing the queue and a firmware fault or memory hardware issue is suspected, a professional diagnostic visit could range from $50 to $150 depending on the service provider. Replacement memory components, if ever required, would add additional parts cost, but hardware failure is a rare cause of this specific code.

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