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How to Fix HP Printer Fuser Error

The printer fuser error is a type of time-out error that can be caused by a fault in the fuser. The fuser is an important component in the LaserJet printers of HP. The component creates the print on the page by fusing the toner powder. Such an error in HP printers may also be caused when the fuser does not reach sufficient heat and pressure. This issue with the component can be fixed by resetting your HP printer’s fuser. Also, you need to make sure that the power cord of your device is not broken. Additionally, you can shut down your printer and wait for it to cool down before restarting it.

Through this article, we will make you learn more causes and fixes of the fuser error on the printer. We’ll also show you the different types of printer fuser errors that you can encounter

Now, you may continue reading further.

What is a Fuser Error on Your HP Printer and What are its Types?

The fuser error on HP printers is a type of problem that indicates that the temperature of this component is increasing. There are also different types of fuser errors that you may come across such as 50.6, 50.4, 50.2 fuser errors, etc. 

Below, we have listed all the types of fuser errors and their causes:

  • 50.1 Fuser Error: It is caused due to low fuser temperature of the thermistor.
  • 50.2 Fuser Error: This error message shows up when the fuser has not warmed up enough to get started.
  • 50.3 Error: The 50.3 fuser error in HP printers shows up due to the high temperature of the thermistor.
  • 50.4 Bad Fuser Error: This usually means drive circuit failure.
  • 50.6 Fuser Error: It indicates the low temperature of the fuser.
  • HP 50.7 Fuser Problem: Whenever you see this error on your printer, this generally means that the fuser temperature is low.
  • 50.8 Fuser Error in HP: The high fuser temperature of the thermistor can be the cause behind this error pop-up.
  • HP 50.9 Fuser Issue: You may have mistakenly installed the wrong fuser in your printer.

Causes of the Fuser Error in Printer

One of the causes behind this issue may be the surprising increase in the temperature of the printer fuser. Another probable reason for this issue to occur is the corrupted registry of your system.

We have further listed the causes of the fuser error here:

  • The paper you have installed in the input tray may not be supported by your Lexmark printer. Then the service fuser error may show up. 
  • A sudden boost in the temperature of the printer may lead to damage or loss of the fuser kit.
  • The registry of your system may be corrupted. Thus, it may have led to this error.
  • The power circuit of the printer may not be properly run.

Fixes to Solve the HP Printer Fuser Error 

The fixes to solve the fuser error includes reinstalling this part in the printer. Also, ensure that the power supply for your printer is not abnormally supplying the power which may also lead to this error. Another, possible way to resolve this error is by restarting your printer to cool down its temperature. You need to make sure that you have placed the printer at room temperature

Fix 1:

Reinstalling the Fuser in Your HP Printer

You can rectify this error by unplugging your HP printer from the power source and let the temperature come down for some time. Then remove the fuser and reinstall it again. Make sure you insert the fuser correctly by pressing it from both sides. Ensure that the fuser is in its place by gently moving the fuser back and forth. 

You can follow the step-by-step instructions to follow the above-given method:

  • Turn off your HP printer.
  • Unplug it from the power source.
  • Make sure that there are no loose ends in the power cable.
  • Remove the fuser and let the temperature cool down.
  • Insert the fuser carefully into the printer. 
  • When the fuser is inserted properly into the printer, you will hear a “click” sound from both sides of the printer.
  • Make sure the fuser is secure by gently moving it back and forth.

After you have inserted the fuser in the printer, turn on your printer. Ensure that all the cable connections are stable and correct. 

Fix 2:

Check the Power Source of Your Printer

Another probable cause for the 50.2 fuser error to occur in HP printers can be an abnormal transmission of the power supply from the power source. This may further lead to a breakdown in the power line. You need to ensure that you are using a plug that is recommended for printers. The plug intended for printers is different from any normal plug. 

Fix 3:

Restart Your HP Printer

In case the fuser error does not get resolved by resetting the fuser. You may try restarting your printer. Doing so also helps in lowering down the temperature of the printer. The fuser also resets itself when you restart the printer.

You can follow these 3 instructions for restarting your printer:

  • Turn your printer off and remove the power cord from the source.
  • Wait for a few minutes so that the printer cools down a bit.
  • Now, turn on your printer.

Fix 4:

Check the Environment

Make sure that your HP printer is not placed in a very cold or hot environment. Such an environment can cause a drastic increase or decrease in the temperature of the printer. Ensure that your device is placed at room temperature to avoid such a problem. 

Fix 5:

Change the Fuser

There might be a possibility that the error may not have been resolved by now. If this is the case, then eliminate and reset the fusing assembly. Try this process one more time and if the issue still persists, replacing your fuser might be the best option for you. 

Through this part of the article, you got familiar with all the fixes for the printer fuser error. We have tried to list all the probable fixes to this error. 


After reading this article, we can say that the HP printer fuser error may be caused by a sudden temperature increase of the fuser. The ways to troubleshoot this error are reinstalling your printer, checking the power source for any abnormal power supply, ensuring that the printer is placed at room temperature, etc. You can also try replacing the fuser if the need be. 

We hope that your issue is resolved through all the listed fixes. If you come across the HP Printer 79 Service Error, you can call our technicians. You can also share this post to help those who are experiencing the same issue.

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