| 摘要 |
PURPOSE: A boiler controller is provided to precisely determine the fault of a circulation pump by allowing a user to visually check the operational state of the circulation pump. CONSTITUTION: An auxiliary controller(50) having the function identical to the function of an indoor controller(30) is installed in a boiler(20) together with an outdoor controller(40) so as to control the boiler(20) at the indoor or the outdoor. A circulation pump state displaying device(60) is provided to display the operational state of the circulation pump. The circulation pump state displaying device(60) includes a control section for generating a control signal to sequentially switch a plurality of LEDs, a transistor controlled by the output signal of the control section(61), and a plurality of LEDs arranged in surfaces of the indoor controller(30) and the auxiliary controller(50) for displaying the operational state of the circulation pump.
|
