Monessen Hearth DEB30 User Manual

34 

1.  Control knob not fully pressed in.
2.  Control knob not pressed in long enough.

3.  Manual shutoff valve not fully open.
4.  Thermocouple connection loose at control 

valve.

5.  Pilot flame not touching thermocouple, which 

allows thermocouple to cool, causing pilot 
flame to go out. This problem could be caused 
by either low gas pressure, or a dirty or 
partially clogged ODS/pilot.

6. Thermocouple damaged.
7.  Control valve damaged.

1.  Burner orifice is clogged.
2.  Burner orifice diameter is too small.
3.  Inlet gas pressure is too low.

1.  Manifold pressure is too low.
2.  Burner orifice is clogged.

1.  Burner orifice is clogged or damaged.
2.  Burner is damaged.
3.  Gas regulator defective.

1.  Vapors from paint or curing process of logs.

1.  Turning control knob to HIGH position when 

burner is cold.

2.  Air in gas line.

3.  Dirty or partially clogged burner orifices.

1.  LP-regulator shut down due to inlet pressure 

too high.

1.  Press in control knob fully.
2.  After ODS/pilot lights, keep control 

knob pressed in for 30 seconds.

3.  Fully open manual shutoff valve.
4.  Hand tighten thermocouple connection 

until snug, then tighten 1/4 turn more.

5.  Contact local gas company.

6. Replace thermocouple.
7.  Replace control valve.

1.   Clean orifice.
2.  Replace burner orifice.
3.  Contact qualified service person.

1.  Contact local gas company.
2.  Clean burner or replace burner orifice.

1.   Clean burner or replace burner orifice.
2.  Replace burner.
3.  Replace gas regulator.

1.  Problem will stop after a few hours 

of operation. Run the heater with the 
damper open if you have one, or open a 
window for the first few hours.

2.  Log heater is intended to be smokeless. 

Turn OFF heater and call qualified 
service person.

1.  Turn control knob to LOW position and 

let warm up for a minute.

2.  Operate burner until air is removed from 

line. Have gas line checked by local 
gas company.

3.   Clean burner or replace burner orifice.

1.  Verify LP tank regulator is installed and 

set at 11" to 13" w.c.

2.  Replace regulator on heater.