| Error Code | Simulation Code | Action Required | What it does | | :--- | :--- | :--- | :--- | | (Thermistor open) | SIM 14 | Cancel self-diagnostics | Resets fuser temperature errors. | | H3 (Fuser too hot) | SIM 14 | Cancel self-diagnostics | Clears high-heat errors. | | H4 (Fuser too cold) | SIM 14 | Cancel self-diagnostics | Clears low-heat errors. | | H5 (Fuser fan error) | SIM 14 | Check fan and reset | Resets fan lock detection. | | H6 (Fuser temp unstable) | SIM 14 | Cancel self-diagnostics | Resets intermittent heat errors. | | Maintenance Indicator (Yellow) | SIM 24 | Replace Drum & Blade | Resets the drum counter (20k-30k life). | | Developer Life Indicator | SIM 42 | Replace Developer (Powder) | Resets developer counter (40k-50k life). | | Machine Total Counter | SIM 22 | Display only (Do not change) | Shows total copies. |
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The screen will flash or show a confirmation. Press again to execute the clear. Press Clear All to cycle the machine's power. 4. Resetting Fuser Error Codes (H-Codes) | Error Code | Simulation Code | Action