Cisco 3905 Panduan Pengguna - Halaman 12

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12 • UK

Operating LED (Fig. 12-E)

Observation

Flashing RED

Flashing GREEN

Flashing YELLOW

Constant GREEN

Constant YELLOW

Alarm LED (Fig. 12-G)

Constant RED indicates a power failure has occured. To reset and start the controller, press the ON/

OFF button once.

If the alarm LED (Fig. 12-G) activates during operation, press the ON/OFF button twice to stop the

fan and restart the controller. If the alarm LED remains on after reset, please refer to the "Troubles-

hooting" section.

4.1 Extra function

Press the ON/OFF button (Fig. 12-F) for at least four seconds to increase the fan's

operating speed. If the controller is switched off, the fan speed will be reset.

Type of fault

No start-up signal from the safety circuit Typically, because the fan is restarted while

it is still running

The fan has started and the controller is waiting for the chimney-draught-ok signal

Chimney draught is confirmed correct but signal from the Air inlet is missing

Start up ok and the fire can be lit

The ventilation function is active and the fire is OFF

3001736-EFC21-EFC25-UK