Method for recognition of defective operating condition of water heater involves recognizing defective state by recording value of current taken and so obtained value is compared with previous value to determine existence of defective state

摘要

The method involves recognition of defective state, which can lead to overheating of water heater. A controller records the value of current taken by circulating pump. The recorded value is compared with a previous value. Depending upon the comparison, the system determines whether defective state exists or not. An independent claim is also included for the controller of the water heater.