To provide a hot water supply apparatus in which the occurrence of a failure can be known, before using the hot water supply apparatus.

The hot water supply apparatus comprises a hot water supply apparatus body and a remote controller, wherein the remote controller 28 comprises an operating section, e.g. an operation switch 30, for setting operational information required for combustion control of the hot water supply apparatus body, and a section 29 for displaying monitor information from the hot water supply apparatus body and the operational information thus set. When a failure of the hot water supply apparatus body occurs, the content of the failure, e.g. a failure code, is displayed at the display section 29, even after the operating switch has been turned off.