Checks / troubleshooting:
• Check the connection between HEATER
CONTROL board and MAIN board Assy.
• Check if the green LED is on HEATER
CONTROL board is on.
• Check if the red LED is on HEATER
CONTROL board is blinking.

Recommended actions:
• Reconnect HEATER CONTROL board and
MAIN board Assy.
Or replace the cable connecting HEATER
CONTROL board and MAIN board Assy.
• If the green LED is still off after turning on the
power, replace HEATER CONTROL board
Assy.
• If the red LED is blinking and there is no
problem on the connection between HEATER
CONTROL board and MAIN board Assy,
reinstall the firmware.