FDS303 Safety and Technical Manual
Rev: 1.7 ECN: 4535 Ref: 3303.0001
This document is strictly private and confidential, reproduction without Micropack approval is prohibited. © Micropack Engineering Ltd, 2018
7.4 LED Indication
The detector LED indicator is used to reveal the detectors current state, as shown below:
Figure 9: FDS303 Fascia - Status LED
Table 5: LED Status Diagnostic Chart
Flashing LED 24V/0V Polarity Reversed
Steady OFF No Power/Major Internal Fault
Red Alarm
One yellow flash at start up The FDS303 is set to low sensitivity (15 metres)
Two yellow flashes at start up The FDS303 is set to standard sensitivity (30 metres)
Four yellow flashes at start up The FDS303 is set to high sensitivity (60 metres)