ABB Uvisor SF910i User Manual page 60

5 LEDs
5.3 Flame LED
– Blinking red (slow): the unit is functioning with the factory-default configuration
(first-time power-up).
– Blinking red (fast): the unit has detected a noise, that means the detected frequency
signal is too steady to be coming from a real flame (see Noise error paragraph in
Diagnostics chapter for important information about this feature).
– Blinking green: the unit is functioning with the Flame-relay overridden. This means
that, for a period of 60 minutes since the override command is issued, the unit will
maintain the flame relay energized no matter what the flame algorithm proves. The
normal functionality of the relay can be restored immediately using the Flame Explorer
software tool.
Flame LED blinks red even in the following conditions:
–
or
–
8VZZ005286 B
An AC-mains frequency noise is detected in the electronic boards (see
16).
Aiming the SF910i to an AC-mains powered light source (usually a bulb or a
fluorescent lamp).
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