20
E7
Supply voltage is below the rated voltage. Please inspect whether power supply is
normal.
Power on after the power supply is nor-
mal.
E8
Supply voltage is above the rated voltage.
U1
Communication error.
Reinsert the connection between the
display board and the power board.
Replace the power board or the display
board.
2) Specific Failure & Solution
Failure
Problem
Solution A
Solution B
The LED does not
come on when unit is
plugged in.
No power supplied.
Check to see if plug is
secured tightly in outlet
and that outlet is work-
ing.
The accessorial power
board and the display
board connected fail-
ure.
Check the connection.
The accessorial power
board is damaged.
Replace the accessorial
power board.
The display board is
damaged.
Replace
the
display
board.
Some buttons can’t work,
or the LED display is not
normal.
The display board is
damaged.
Replace
the
display
board.
The Cooking Mode Indi-
cator comes on, but heat-
ing does not start.
High temperature of
the hob.
Ambient
temperature
may be too high. Air In-
take or Air Vent may be
blocked.
There is something
wrong with the fan.
Check whether the fan
runs
smoothly.
if not, replace the fan.
The power board is
damaged.
Replace
the
power
board.
Heating stops suddenly
during operation and the
display flashes “u”.
Pan Type is wrong.
Use the proper pot (refer
to the instruction manu-
al.)
Pan detection cir-
cuit is damaged,
replace the power
board.
Pot diameter is too
small.
Cooker has overheated; Unit is overheated. Wait
for temperature to re-
turn to normal.
Push “ON/OFF” button to
restart unit.
Heating zones of the same
side (Such as the first and
the second zone ) would
display “u” .
The power board and
the display board con-
nected failure;
Check the connection.
The display board of
communicate part is
damaged.
Replace
the
display
board.
V.1
