Desa BCS18 - Manual (Page 9)

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TROUBLESHOOTING
WARNING: Turn off log set and let cool before
servicing. Only a qualifi ed service person should
service and repair log set.
POSSIBLE CAUSE REMEDY OBSERVED PROBLEM
Note: All troubleshooting items are listed in order of operation.
1. Poor fuel quality
2. Fireplace venting system not drafting
properly
3. Excessive flame impingement or
blockage
4. Improper fuel/air mixture
5. Excessive gas supply/pressure
1. Passage of air/gas across irregular sur-
faces
1. Incorrect gas supply or pressure
2. Blocked burner orifi ce or burner mani-
fold ports
3. Improper burner orifi ce size
Log set is smoking/sooting excessively
(Note: It is natural and unavoidable for
vented gas log sets to produce moderate
levels of carbon (soot) where fl ames
contact the logs. This is especially true
with propane/LP gas.)
Burner is excessively noisy
(Note: The movement and combustion of
gas will create low, unavoidable levels of
noise.)
Burner fl ame is too low or too high
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 fl ame
passage
4. Remove any foreign items from the
fl ame pattern and/or check for proper
orifi ce sizing
5. Preheat fl ue in very cold weather
1. Relieve any tight bends or kinks in gas
supply line
1. Check for proper gas supply pressure
2. Free burner orifi ce and manifold ports
of any burrs, paint, or other blockage
3. Verify proper burner orifi ce sizing (see
Figure 2, page 4)
SERVICE HINTS
TROUBLESHOOTING
SERVICE HINTS
When Gas Pressure is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specifi ed heat
• propane/LP gas supply may be low
You may feel your gas pressure is too low. If so, contact your local
propane/LP or natural gas supplier.