PrinterSpecialists.org

What This Error Means

Error 13.20 on a SHARP printer indicates a problem with the fuser unit, often related to overheating or a failure to reach/maintain proper operating temperature.

Detailed Explanation

The 13.20 error code on SHARP printers specifically points to an issue with the fuser assembly, a critical component responsible for bonding toner to the paper using heat and pressure. When this error appears, it typically means the fuser is either not heating up correctly, has overheated, or its internal thermistor (temperature sensor) is reporting an out-of-range temperature. This can be caused by a faulty heating element, a malfunctioning thermistor, a problem with the fuser's control circuit, or even poor ventilation leading to excessive heat buildup. This error prevents the printer from operating because the fuser's proper functioning is essential for the printing process. Without the correct temperature, toner will not adhere permanently to the paper, resulting in smudged or blank prints. The printer's safety mechanisms detect this anomaly and shut down operations to prevent damage to the fuser or potential fire hazards. While it might seem like a simple temperature issue, it often indicates a deeper hardware problem within the fuser unit itself or its connection to the main board.

DIY Troubleshooting Steps

Try these steps before calling a specialist

1
Turn off the printer completely using the main power switch, then unplug it from the wall outlet.
2
Wait for at least 15-20 minutes to allow the fuser unit to cool down completely and for any residual electrical charge to dissipate.
3
While the printer is off, open the front or side cover (depending on your model) to access the fuser area. Refer to your printer's manual for the exact location.
4
Carefully inspect the fuser unit for any visible obstructions, paper jams, or foreign objects that might be trapped and causing overheating or preventing proper operation. Do not touch the fuser rollers directly as they can be hot even after cooling.
5
Gently close all covers and panels securely, ensuring no latches are loose.
6
Plug the printer back into a direct wall outlet (avoid power strips or surge protectors for testing purposes).
7
Turn the printer back on and observe if the error code reappears. Allow it to go through its startup sequence.
8
If the error persists, try performing a hard reset by unplugging the printer again for 5 minutes and then plugging it back in and restarting.
9
Ensure the printer is in a well-ventilated area, not enclosed in a cabinet, to prevent heat buildup around the fuser unit.
10
Check for any available firmware updates for your printer model on the SHARP support website. Sometimes, software glitches can cause sensor misreadings.

When to Call a Specialist

If the 13.20 error persists after performing all the DIY troubleshooting steps, especially after a full cool-down and restart, it's highly likely that the fuser unit itself is defective or has a critical component failure (e.g., heating element, thermistor, or fuser lamp). These are internal hardware components that require specialized tools and expertise to diagnose and replace. Attempting further repairs without proper training can lead to additional damage or personal injury due to the high temperatures and electrical components involved. A certified SHARP technician will be able to accurately diagnose the fuser unit and replace it if necessary.

Find a certified printer specialist near you →

SHARP Error Code 13.20