DF Series installation manual
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HONEYWELL FLAME SAFEGUARD RELAY
The HONEYWELL flame safeguard relay has five (5) lights that show that the
operating sequence is normal and also to indicate burner malfunctions. When
flashing the ALARM light indicates a burner malfunction. To identify the anomaly,
use the HONEYWELL S8700 keyboard display module.
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Normal operating sequence
a.
The POWER light flashes to indicate that the flame safeguard is energized and
that there is no heating demand.
b.
The PILOT light is ON when there is a heating demand and the pilot control
valve coil as well as the ignition transformer is energized.
c.
The FLAME light is ON when the flame safeguard relay detects a pilot flame
signal for 10 seconds.
d.
The MAIN light is ON when the flame safeguard relay detects a stable flame
signal for 10 seconds and all safety devices, low and high air pressure as well as
high temperature limit switches is closed between terminals 6 and 7.
e.
The ALARM lights flashes when a malfunction is detected. Refer to the
troubleshooting check list to establish diagnostic.
Note: Pressing the reset button brings the flame safeguard relay back to its normal
operating mode.
