Error messages
There may not be any text visible in the display.
The display may not be correct.
Checksum of the internal
device data is incorrect
Checksum of the program
memory is incorrect
Checksum of the data
memory is incorrect
Replace battery
(by authorised specialists only).
Then set time and date.
The watchdog timer has
detected an error.
Error with temperature
measurement / temperature
sensors
Possible cause: sensor open circuit / short-
circuit
Overtemperature (soft-
ware) during temperature
measurement
Restart system / allow device to cool down
Pump and heater supply
voltage not available.
Possible cause: overtemperature
Overtemperature (elec-
tronic) during temperature
measurement
Restart system / allow device to cool down
Faulty undulation function.
No power supply for pad-
dle motor.
Restart system / remove paddle blockages
Fill level in tank is critical;
heater has been switched
off
Restart system / top up the tank
Communication / interface
fault