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TROUBLE SHOOTING GUIDE
PROBLEM PROBABLE CAUSE CORRECTION
18.Flashback-The air/gas mixture 18A.Under rated burner 18A. Check orifice size. Increase size if
ignites inside the burner to Necessary or increase gas pressure
burn near the orifice, creating 18B.Increase primary air. 18B.Adjust air shutter to reduce
a roaring noise like a blow primary air.
torch. 18C.Flashback occurs with the 18C. Change burner valve.
Burner valve in on off position, 18D. If #1,2 &3 corrections fail to
the valve is probably leaking. eliminate flash back, replace the
burner.
19. Extinction pop-A small 19A.Similar to flashback. 19A. Reduce primary air supplied to
explosion of gas in the the burner. CAUTION: do not
burner head occurs when allow yellow tipping during
the burner is shut off. burner operation.
19B. Check orifice size.
19C. Check gas pressure.
Blowing (lifting) Flames
Normal Hard Flames Yellow Tipping Yellow Flames
Check the gas supply and set the regulator to the proper supply of gas. A properly adjusted burner should be stable
and quiet. The flame should have a sharp, well
defined blue inner cone, no yellow tipping. The
flame should also be stable and uniform with no
flames lifting off the burner ports.
A. VGRC / VGSC I / R broiler construction prior
to Feb. 1995 used one (1) screen support. The
support was mounted internally from the
venturi forward to the front of the broiler
burner box. The screen support partially
covered the glow coil ignitor. This usually
caused slow or delayed ignition, especially
when used LP gas.
B. A change in the manufacturing of the I / R
Broiler repositioned the screen supports. The
screen supports, now two (2), are positioned
from, right to left. The glow coil ignitor is
now completely open for igniting the gas
almost immediately.
C. The first generation, VGR / VCM, screen
support should be welded in four (4) places.
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