Specific Failure And Solution - Rotel U1140CH Gebrauchsanweisung

E4
Temperature sensor of the IGBT failure
 open circuit.
E5
Temperature sensor of the IGBT failure
 short circuit
E6
High temperature of IGBT.
E7 Supply voltage is below the rated volt-
age.
E8 Supply voltage is above the rated volt-
age.
U1
Communication error

Specific Failure and solution

Failure
The LED does not
come on when unit
is plugged in.
Some buttons do
not work, or the LED
display is not nor-
mal.
The Cooking Mode
Indicator comes on,
but heating does
not start.
Gebrauchsanweisung ○ Mode d'emploi ○ Istruzioni per l'uso ○ Instruction for use
Problem
The accessorial
power board and
the display board
are connected incor-
rectly.
The accessorial
power board is dam-
aged.
The display board is
damaged.
The display board is
damaged.
High temperature of
the hob.
There is something
wrong with the fan.
The power board is
damaged.
109
Replace the power board.
Wait for the temperature of IGBT re-
turn to normal.
Touch "ON/OFF" button to restart
unit.
Check whether the fan runs smoothly;
if not, replace the fan.
Please inspect whether power supply
is normal.
Power on after the power supply is
normal.
Reinsert the connection between the
display board and the power board.
Replace the power board or the dis-
play board.
Solution A
Check the connec-
tion.
Replace the accesso-
rial power board.
Replace the display
board.
Replace the display
board.
Ambient tempera-
ture may be too
high.
Air Intake or Air
Vent may be
blocked.
Check whether the
fan runs smoothly; if
not, replace the fan.
Replace the power
board.
Solution B