Design Dynamics VTD-18N-JHB Manuel D’Utilisation
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114370-01E
11
TROUBLESHOOTING
WARNING: Turn off log set and let cool before servicing. Only a
qualified service person should service and repair log set.
Note: All troubleshooting items are listed in order of operation.
POSSIBLE CAUSE
REMEDY
OBSERVED PROBLEM
1..Poor.fuel.quality
..Fireplace.venting.system.
..Fireplace.venting.system.
not.drafting.properly
3..Improper.fuel/air.mix
4..Excessive. gas. supply. or.
pressure.
1..Passage. of. air. or. gas.
across.irregular.surfaces
1..Incorrect. gas. supply. or.
pressure
2. Blocked burner orifice or
burner.manifold
3..Improper. burner. orifice.
size
Log. set. is. smoking/sooting.
excessively.
(Note: It is natural and un-
avoidable for vented gas log
sets to produce moderate
levels of carbon (soot) where
flames contact logs..
excessively.
(Note: It is natural and un-
avoidable for vented gas log
sets to produce moderate
levels of carbon (soot) where
flames contact logs..
Burner. is. excessively. noisy.
(Note: The movement and
combustion of gas will cre-
ate low, unavoidable levels
of noise.)
(Note: The movement and
combustion of gas will cre-
ate low, unavoidable levels
of noise.)
Burner flame is too low or
too.high
too.high
1..Contact.local.gas.supplier
2. Adjust damper wide open
2. Adjust damper wide open
and/or have fireplace and
venting. professionally.
cleaned.and.checked
venting. professionally.
cleaned.and.checked
3..Remove.any.foreign.items.
from flame pattern and/or
check. for. proper. orifice.
sizing
check. for. proper. orifice.
sizing
4. Preheat flue in very cold
weather.
1..Relieve.any.tight.bends.or.
kinks.in.gas.supply.line
1..Check.for.proper.gas.sup-
ply.pressure
..Free. burner. orifice. and.
manifold ports of any burrs,
paint.or.other.blockage
paint.or.other.blockage
3..Verify. proper. burner. ori-
fice sizing (see Figure 2,
page 6)
page 6)