Fix HP Error 50.2: Fuser Warm-Up Error
critical Severity: critical
If your HP printer is displaying error 50.2, do not worry – this is a known issue with a proven fix. This error typically indicates fuser warm-up error that can usually be resolved without a service call. Follow the steps below to clear this error.
What Causes HP Error 50.2?
This error can be triggered by one or more of the following issues:
- Fuser assembly has failed or reached end of life
- Low voltage power supply not providing adequate power to the fuser
- Defective thermistor sensor in the fuser assembly
- Printer placed in an environment below minimum operating temperature
How to Fix HP Error 50.2
Follow these steps in order. After each step, check whether the error has cleared before proceeding to the next one.
- Step 1: Turn off the printer and let it sit for 30 minutes to cool completely
- Step 2: Ensure the printer is in an environment between 15-32°C (59-90°F)
- Step 3: Power the printer on again — the error may clear after a full cool-down cycle
- Step 4: Check that the power outlet provides stable voltage and is not on a shared circuit
- Step 5: If the error persists, the fuser assembly needs replacement
- Step 6: On Enterprise models, the fuser is user-replaceable — order the correct fuser kit for your model
Affected HP Printer Models
The following HP printer models are known to display error 50.2:
- HP LaserJet Pro M404dn
- HP LaserJet Pro M428fdw
- HP LaserJet Enterprise M607dn
- HP LaserJet Pro MFP M227fdw
Related HP Error Codes
If you are troubleshooting error 50.2, these related error codes may also be relevant:
- 49.4C02 – Critical Firmware Error
- 13.A3 – Paper Jam in Tray 2/3 Area
- 79 – Service Error – Critical
- 59.F0 – Motor Error
- 0x6100004a – Carriage Jam Error
Frequently Asked Questions
What causes HP error 50.2?
Error 50.2 indicates the fuser cannot reach its operating temperature within the expected timeframe. Common causes include a failed fuser heating element, a faulty thermistor sensor, low ambient temperature, or insufficient power supply voltage.
Can I replace the fuser myself?
On HP Enterprise and many Pro models, the fuser is a user-replaceable maintenance item. Order the correct fuser maintenance kit for your specific model. The replacement typically involves opening the rear door, releasing two levers, and sliding the old fuser out.
Error still not resolved?
If the steps above did not fix the error, the issue may require professional service. Contact the manufacturer support line or visit an authorized service center near you.