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Resolving the 50.3 Fuser Error in the HP P4015, P4015, and P4515

Diagnostic Tips for the 50.3 Fuser Error on the HP P4014, P4015, and P4515

On majority of HP machines the 50.3 fuser error is related to a high temperature reading in the fusing assembly, RM1-4554-000. The good thing about this particular error is that it usually is solved without replacing the fusing unit. In this article I’d like to talk about possible situations that can cause the issue and how to go about solving it.

1. Since the error is related to a high temperature reading turn the machine off and let it sit 20 to 30 minutes. One thing you don’t want to do is turn it off then back on right away. Since the fusing assembly is already overheating turning it back on right away can cause it to heat up more and permanently damage the unit.
HP P4015 / P4515 / P4014 Fuser Kit RM1-4554

HP laserjet P4014, P4015, P4510, P4515 50.3 fuser error photo

2. Check your environment –  Make sure you have proper ventilation. I usually recommend 4 to 6 inches of clearance around all sides of the machine. Also make sure the machine is not in an extremely hot environment. This last year with it being so hot I had several customers with machines out in factories or shipping departments have overheat issues in their laser printers.

3. Media –  Running large print jobs with heavy cardstock can cause overheat issues. If you specify that you are using heavy cardstock in most modern printers the machine heats up the fuser more. So the fusing unit might normally run at around 350 decrees where as on heavy cardstock it could run at around 375 decrees. Sometimes the fuser can’t stay at the correct temperature and it keeps rising under these circumstances. To avoid this problem break the large print job into smaller jobs with time to cool down in between jobs.

4. If all the steps above have failed to solve your 50.3 fuser error then it’s time to replace the fusing assembly. Below is a link to the instructions on how to remove the fusing assembly and below that is a link to purchase a new fuser or PM kit for your machine.
HP laserjet P4014, P4015, P4510, P4515 Fuser Removal procedure

P4015/P4515/P4014 Fuser Kit

Price: $84.10

3.2 out of 5 stars (4 customer reviews)

16 used & new available from $76.67


HP P4014 P4015 Fuser Maintenance Kit CB388A

Price: $234.99

3.5 out of 5 stars (49 customer reviews)

25 used & new available from $234.99

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