GAS HOT WATER SUPPLY APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a gas hot water supply apparatus in which erroneous handling of secondary gas pressure regulation and erroneous operation can be suppressed. SOLUTION: When the operating switch 1 for regulating secondary gas pressure of a gas hot water supply apparatus is connected with a microcomputer 2, the microcomputer 2 is provided with a terminal 4 for outputting a pulse signal through a contact of the operating switch 1 to the signal input terminal 3 of the microcomputer 2. On condition that the pulse signal is inputted to the signal input terminal 3, the microcomputer 2 makes a decision that the operating switch 1 is turned on.