FULTON Vantage VTG 2000 - Page 79

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SECTION 4 VTG-IOM-2016-1214 MAINTENANCE
4-11
PROBLEM CAUSE CHECK
Low Air Flow Supply indi-
cated on low air switch
Low Air is annunciated if the airow switch detects
low airow through the boiler.
The air switch has been factory set and should not
be adjusted in the eld.
An extended low air indicaon does not mean that
the low air switch is defec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 re speed is correctly displayed on the
touch screen.
Check for obstrucons in the vent.
Check for obstrucons in the air inlet.
Main ame failure during
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.
Ignion Failure If UV scanner/ame rod does not detect the ame
during the 4-second trial-for-ignion period, the gas
valve and spark ignion are de-energized. At this
me a safety lockout occurs.
Idenfy and correct.