| 摘要 |
A water heater is described having:- an inlet (12) to recieve water; an electrically operated valve (14) for controlling flow of water through the water heater; a heating chamber (16) fluidly connected to inlet (12) to receive water, the heating chamber (16) including an electrically operated heating element for heating the received water; an outlet (30) from the chamnber (16) for heated water; a user operable switch for turning the water heater on/off; and and electrically operated controller (23,24) for controlling electrical power supply to the heating element (160, wherein the water heater includes means for determining whether power is being supplied to the heating element (16). <Figure 2> |
