• Code: SC542-02
• Description: Fusing lamp (Center) thermistor not reloaded 2 The heater (Center) thermistor does not reach the reload temperature 50 seconds after the start of motor rotation.
• Causes: • Fusing lamp Disconnected • The over temperature prevention mechanism started working
• Remedy: Clear the SP: fusing SC.

• Code: SC543-00
• Description: Fusing (Center) thermopile high-temperature detected (software) The temperature is detected to stay at 245°C or higher for one second.
• Causes: • Shorted triac • Failed the engine board
• Remedy: Clear the SP: fusing SC.

• Code: SC544-00
• Description: Fusing (Center) thermopile high-temperature detected (hardware) The hardware high-temperature error Sensor flag is detected.
• Causes: • Damaged triac (shorted) • Failed the engine board • Failed fusing thermistor • Abnormal fusing control software behavior
• Remedy: • Clear the SP: fusing SC. • Replace PSU when triac is blown. • Replace engine board and/or fusing thermistor.

• Code: SC545-00
• Description: Fusing (Center) heater stay ON The thermistor (center) has not detected the target temperature, even after the fusing heater stays ON for more than 30 seconds after reloading.
• Causes: • Deformed or floating thermistor • Broken fusing lamp wire • The overtemperature prevention mechanism started working.
• Remedy: Clear the SP: fusing SC.

• Code: SC547-01
• Description: Zero-crossing error (adhered relay contact) When the fusing relay is in an OFF state, a "zero-crossing interrupt request" occurs in 50 ms.
• Causes: Damaged fusing relay (adhered contact) Failed fusing relay driving circuit
• Remedy: • Turn the main power off/on. • Replace the PSU when fusing relay is broken. • Check the connection between PSU – engine board. • Replace the board and/or harness

• Code: SC547-02
• Description: Zero-crossing error (bad relay contact) If a "zero-crossing interrupt request" does not occur when the fusing relay is in an ON state, an error results.
• Causes: • Damaged fusing relay (open contact) • Failed fusing relay drive circuit • PSU fuse (24VS) blown
• Remedy: • Turn the main power off/on. • Replace the PSU when fusing relay is broken. • Check the connection between PSU – engine board. • Replace the board and/or harness. • Replace the PSU fuse (24VS) if it is blown

• Code: SC547-03
• Description: Zero-crossing error (low frequency error) The number of zero-crossing interrupts does not reach a certain value in 500 ms.
• Causes: The frequency of the commercial power supply line is unstable.
• Remedy: • Turn the main power off/on. • Check the connection of commercial power supply line • Check the connection between PSU – engine board. • Replace the board and/or harness

• Code: SC551-00
• Description: Thermistor broken (Edge) While a fusing heater works, temperatures of -20°C or less during a consecutive 9 seconds are detected more than 10 times.
• Causes: • Thermistor broken • Connector contact failure
• Remedy: Clear the SP: fusing SC