www.desatech.com
901260-01C
12
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
1. Poor fuel quality
2. Fireplace venting system
not drafting properly
3. Excessive flame impinge-
ment or blockage
4. Improper fuel/air mixture
5. Excessive gas supply/
pressure
1. Passage of air/gas across
irregular surfaces
1. Incorrect gas supply or
pressure
2. Blocked burner orifice or
burner manifold ports
3. Improper burner orifice
size
OBSERvED PROBLEM
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 the logs. This
is especially true with pro-
pane/LP gas.)
Burner is excessively noisy
(Note: The movement and
combustion of gas will cre-
ate low, unavoidable levels
of noise.)
Burner flame is too low or
too high
REMEDY
1. Contact local natural or
propane/LP gas company
2. Adjust damper wide open
and/or have fireplace and
venting professionally
cleaned and checked
3. Separate the logs to allow
more flame passage
4. Remove any foreign items
from the flame pattern and/
or check for proper orifice
sizing
5. 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
2. Free burner orifice and
manifold ports of any burrs,
paint or other blockage
3. Verify proper burner ori-
fice sizing (see Figure 2,
page 5)
