I thought the max. in Australia was 10 Amps. The max. in Europe is 16 Amps. With 230 Volts, that makes 3680 Watts.
I assume the heating element is at the bottom, under the tub? Another assumption, I guess the timer is stopped by the thermostat for heating and after the selected temperature has been achieved, the timer is activated again? That means no agitation during the heating process?