• Code: SC544-01
• Description: Fusing central thermopile high temperature detection (hardware) In the event of an error
• Causes: • Triac defective (short-circuit) • Engine controller defective • Heating central thermopile defective • Fusing control software: out of control
• Remedy: • If the triac is defective, replace the AC power supply board • If necessary, replace the BCU or the heating central thermopile

• Code: SC544-02
• Description: Fusing central NC sensor high temperature detection (hardware) In the event of an error
• Causes: • Triac defective (short-circuit) • Engine controller defective • Heating central thermopile defective • Fusing control software: out of control
• Remedy: • Attach the new fusing unit, then run SP-5-810-002 • If the triac is defective, replace the AC power supply board • If necessary, replace the BCU or the Fusing central NC sensor

• Code: SC545-00
• Description: Fusing central heater continuously Heat After waiting for full power for more than (t6) seconds continuously, not detected for (t8) seconds. • Definition of heater full power Continuously heating rate set point (maximum heating rate) • Measurement start point After reload (after heater extinguished, after rotation complete) below the standby temperature (target temperature), measurement starts after a heater heat-up request is issued. • Measurement stop condition Rotation started due to a print signal during measurement or other. • Maximum heat-up Duty (SP interlinked value) 0% is excluded.
• Causes: • Thermistor deformation/float • Heater disconnection • After excessive temperature rise prevention unit operates
• Remedy: • Replace the thermistor • Replace the fusing lamp • Replace the fusing unit

• Code: SC547-01
• Description: Zero cross error (relay-contact soldering) In the event of an error
• Causes: • Fusing relay defective (contact soldering) • Fusing relay drive circuit fault
• Remedy: • Turn the main power supply switch OFF/ON • If the fusing relay is damaged, replace the PSU • Check the connection between PSU and control board, and replace harness and board if necessary

• Code: SC547-02
• Description: Zero cross error (relay contact fault) In the event of an error
• Causes: • Fusing relay damage (contact open) • Fusing relay drive circuit fault • PSU fuse (24VS) blowout
• Remedy: • Turn the main power supply switch OFF/ON • If the fusing relay is damaged, replace the PSU • Check the connection between PSU and control board, and replace harness and board if necessary • If the PSU fuse (24VS) blows out, replace the fuse

• Code: SC547-03
• Description: Zero cross error (low-frequency error) In the event of an error
• Causes: Frequency instability of commercial power line
• Remedy: • Turn the main power supply switch OFF/ON • Check the power source • Check the connection between PSU and control board, and replace harness and board if necessary

• Code: SC548-00
• Description: Fusing Rotation Detection During heating, there is no input to the edge of the rotation sensor (t7) ms.
• Causes: • Motor defective • Sensor defective • Sensor actuator/feeler modification/defective
• Remedy: • Replace the motor • Replace the sensor • Replace the actuator/feeler • Replace the fusing unit

• Code: SC551-01
• Description: Fusing Edge Thermopile Disconnection Below -50 degrees C (or below CB) is detected for (t11) seconds continuously.˜
• Causes: • Thermopile disconnection • Connector disconnected
• Remedy: • Replace the thermopile • Reset the connector • Replace the connector • Replace the fusing unit