DC430 with a U4-2 "Fuser over temperature" Status code

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  • AndyB
    • Jun 2025

    #1

    DC430 with a U4-2 "Fuser over temperature" Status code

  • adriansto
    Service Manager

    Site Contributor
    VIP Subscriber
    1,000+ Posts
    • Nov 2007
    • 2383

    #2
    Originally posted by AndyB
    Hello,


    1.Does anyone have any idea what may have caused the machine to overheat in the first place?

    2. How long should the lamps be on before they are fully heated and begin to cycle out?

    3. Does it sound like the fuser lamps should be replaced as well?

    Thanks for the help.

    AndyB
    In LVPS Assy near the fan is a relay on transparent plastic case. The relay drive the lamps. Check it !
    If the fuser is cold the lamp stay on about 8 - 10 seconds.
    If stay longer check the termistor.
    Succes !

    Comment

    • Derrick

      #3
      fuser overhet

      it sounds like the thermos caused the overheating, but you most likey need to replace the lamps, check for continuity.the only other thing i can think of is power supply. sorry for the delay.

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