WATER HEATING APPARATUS

摘要

A water heating apparatus includes a burner, a heat exchanger for heating hot and cold water with use of heat from the burner, a scale detector for detecting occurrence of scale clogging in the heat exchanger, a notifying unit for notifying an error when the scale detector detects occurrence of a scale greater than or equal to a predetermined amount, and a controller performing a control of allowing the notifying unit to notify an error and prohibiting combustion operation of the burner when the scale detector detects occurrence of a scale greater than or equal to the predetermined amount. The controller is configured to start a cleaning mode for cleaning inside the heat exchanger when the controller detects shifting operation to the cleaning mode after the combustion operation of the burner is prohibited.

主权项

1. A water heating apparatus, comprising:
a burner; a heat exchanger for heating hot and cold water with use of heat from said burner; a scale detector for detecting occurrence of scale clogging in said heat exchanger; a notifying unit for notifying an error when said scale detector detects occurrence of a scale greater than or equal to a predetermined amount; and a controller performing a control of allowing said notifying unit to notify an error and prohibiting combustion operation of said burner after said error is notified when said scale detector detects occurrence of a scale greater than or equal to said predetermined amount, said controller being configured to start a cleaning mode for cleaning inside said heat exchanger when shifting operation to said cleaning mode is detected after said combustion operation of said burner is prohibited by said controller.