Error
Code
Description
Potential Cause for
Error
Clearing Error
ER03&
Continuou
s signal
sound
Constant use of buttons; will
silence automatically in 10
seconds.
Water or cooking utensils
on the glass over the
control unit
Cleaning the appliance surface
ER20
Flash Error
C-Error
Replace the control unit
ER21
To prevent overheating damaging
the electronic elements,
the control unit interrupts power
after inspection.
When overheated, the
standard algorithm is
reached.
The electronics
environment temperature
still too high.
Wait for cooling down. Check
for overheating.
ER22
Faulty Button evaluation. The
control unit will cut off the circuit
after 3.5 - 7.5 seconds.
Intermittent connection
between short circuit or
button evaluation
Replace the control unit
ER36
NTC value is incorrect
NTC open or shorted
Replace the control unit
ER40
Secondary operational voltage is
low with respect to the defined low
voltage at least for 5 seconds
(1.8V<Uinterruption<2.9V)
Primary PTC is
overheated
Remove the Control Unit from
the power unit
U400
Secondary voltage of the power
unit to high (primary>300 V). The
control unit shall turn off after
buzzing for 1 second.
The control unit
connection is faulty.
Connect to the mains supply
correctly.
EN
45
