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SAMSUNG Error Code 117.370

HIGHCommon Issue

Fuser Unit Overheating or Malfunction

What This Error Means

Error 117.370 indicates a problem with the fuser unit, specifically related to its temperature regulation or internal components.

Detailed Explanation

The 117.370 error code on Samsung printers points directly to an issue within the fuser assembly. The fuser is a critical component responsible for bonding toner to the paper using heat and pressure. This error typically means the fuser is either not reaching its optimal operating temperature, is overheating, or one of its internal sensors (like a thermistor) is reporting an incorrect temperature reading. It could also signify a problem with the fuser lamp, heating element, or the control circuit that regulates its temperature. This malfunction prevents the printer from completing the printing process because the toner would not properly fuse to the paper, resulting in smudged or unreadable prints. The printer's internal diagnostics detect this anomaly and halt operations to prevent damage to the fuser itself or to ensure print quality. Often, the root cause can be a worn-out fuser, a faulty thermistor, or a power supply issue affecting the fuser's heating capabilities.

DIY Troubleshooting Steps
Try these steps before calling a specialist
  1. 1

    Turn off the printer completely and unplug it from the wall outlet. Wait for at least 15-20 minutes to allow the fuser to cool down completely.

  2. 2

    Plug the printer back in and power it on. Observe if the error clears during the startup sequence.

  3. 3

    Open the rear access door or the side panel (depending on your model) to locate the fuser unit. Carefully inspect it for any visible obstructions, torn paper, or debris.

  4. 4

    Gently remove and reinsert the fuser unit if your printer model allows for user replacement. Ensure it's seated firmly and correctly.

  5. 5

    Check the printer's power connection. Ensure it's plugged directly into a wall outlet, not a surge protector or power strip, as insufficient power can sometimes affect heating components.

  6. 6

    Update your printer's firmware. Visit the Samsung support website for your specific model and download the latest firmware if available.

  7. 7

    Perform a factory reset on the printer if the option is available through the control panel. Be aware this will erase custom settings.

  8. 8

    Try printing a test page from a different application or source to rule out software-related issues.

When to Call a Specialist

If the error persists after trying all the DIY troubleshooting steps, especially after a full power cycle and inspection, it's highly likely that the fuser unit itself is defective or has a critical internal component failure (e.g., a burnt-out heating lamp or a failed thermistor). These components are not typically user-serviceable and require specialized tools and knowledge to replace safely. Continuing to use a printer with a malfunctioning fuser can lead to further damage or poor print quality. At this point, professional diagnosis and likely fuser replacement by a certified technician are recommended.

Find a certified printer specialist near you →
Estimated Repair Cost

$200-$450 (for fuser unit replacement, parts and labor)

Actual costs may vary based on location and specialist

Commonly Affected Models
  • • Samsung ML-3310ND
  • • Samsung SCX-4833FD
  • • Samsung ML-3710ND
  • • Samsung M3370FD
  • • Samsung M4070FR
Related Error Codes
117.300117.310117.320

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