Desa PHK-18 Benutzerhandbuch

  WARNING: Turn off log set and let cool before 

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)

•  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.