| 摘要 |
PROBLEM TO BE SOLVED: To provide a combustion appliance capable of announcing a warning that a period when maintenance is to be performed is coming, and capable of making a user perceive the necessity of the maintenance after the announcement of the warning.SOLUTION: When a remaining period until the time of carrying out maintenance of a neutralizer in a water heater reaches a predetermined period or less, a remote controller blinks an error code (S120). When the error code is announced, performance relating to a water heating function (for example, a tapping capacity) is decreased to degrade convenience of a user (S220 and S240). Therefore, even a user who does not actually perceive the necessity of maintenance only by blinks of the error code experiences an inconvenient condition because of a reduced tapping amount from a hot water supply faucet, and this triggers enhancement of a probability that the user carries out the maintenance. A reduction is expected in a probability that no maintenance carried out causes the water heater to be forcibly stopped. |
