Fulton Vantage (VTG) Fully Condensing Hydronic Boiler - Manual (Page 64)

© The Fulton Companies 2013
MAINTENANCE
VTG-IOM-2013-0815
SECTION 4
4-12
PROBLEM CAUSE CHECK
Low Air Flow Supply indi-
cated on low air switch Low Air is annunciated if the airfl ow switch detects
low airfl ow through the boiler.
The air switch has been factory set and should not
be adjusted in the fi eld.
An extended low air indicaƟ on does not mean that
the low air switch is defecƟ ve.
Check that blower is power and feedback plugs are
clipped into the blower.
Check that the burner is clean by observing
through the venturi. Check the blower purge speed
and low fi re speed is correctly displayed on the
touch screen.
Check for obstrucƟ ons in the vent.
Check for obstrucƟ ons in the air inlet.
Main fl ame failure during
fi ring period Main gas control valve is de-energized and the con-
trol goes into “lockout” mode. Flame failure occurs
and the indicator is illuminated. The programmer must be manually reset.
IgniƟ on Failure If UV scanner/fl ame rod does not detect the fl ame
during the 4-second trial-for-igniƟ on period, the gas
valve and spark igniƟ on are de-energized. At this
Ɵ me a safety lockout occurs. IdenƟ fy and correct.