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8. Possible malfunctions
If the device malfunctions and an error code appears on the digital display, verify based
on the following table whether the malfunction may be removed before contacting the
service company or sales agent.
Information about error codes
(3000 W / 3500 W devices)
Error
codes
Description
Solution
F3
Short-circuit of the temperature sensor
of ceramic glass
Contact the service
company
F4
Damaged cable of the temperature
sensor of ceramic glass
Contact the service
company
F5 / F6
Failure of the control board of the
temperature sensor
Contact the service
company
F7
Device overheating
Contact the service
company
F8
Problems with connections of fans / the
device is not sufficiently cooled
Contact the service
company
F9
Voltage, frequency malfunction
Check the electric
connection
