Angelo Po FX Series, Technical Manual

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Copyright by Servizio Clienti ANGELO PO Spa
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4.8. Gas alarms and burner problem solving
During burner control cycle a 120V orange lamp, connected to pins 11 and 12 on
the Blower control pcb, is activated when the burner control is correctly supplied AND if no
alarm comes from the burner AND if the power is required from blower control board.
During operation the burner control board has a status signal ( a small coloured led )
located under a plastic lens. The colour blink messages are the followings:
1)
GREEN , slow blink: burner in STOP status, no alarm, waiting for power request.
2) GREEN , fast blink: burner in START status, no alarm, but low flame signal (less then
about 1.5 microA). Ignition cable faulty, spark plug, combustion values out of range, not
good ground connection, e.m. interference on ground net
3) GREEN , fixed light: : burner in START status, no alarm from burner, good flame signal.
4) ORANGE : burner is in IGNITION step.
5) RED , fixed light: Lockout Status.
6) RED , fast blink: Lockout Status, leakage currents from flame signal wire or from his plug.
Check insulation vs. gnd of flame detector plug and/or its wire.
7) RED / ORANGE alternate blinkining status: supply voltage out of range (100-130 V on
pins 6 to 7).
BURNER CONTROL DIAGNOSTICS MODE
In Lockout Status
(
RED, fixed light) a fast pressure on the plastic lens push button is an
alternate local mode to reset the burner control board, but it do non reset the alarm on
other pcb.
In Lockout Status
(
RED, fixed light) a pressure on the plastic lens push button for more
than 5 seconds actives a diagnostic display routine.
The blinking code is the following:
1 fast light + 1 long light = Failure on ignition step, no Flame.
3 fast light + 1 long light = Failure before ignition step or leakage currents from flame
signal wire or from his plug.
From 8 to 14 fast light + 1 long light: internal failure. Change the burner control
board.