TROUBLESHOOTING

WARNING

If the gas quality is bad, your pilot may not stay lit, the burners may produce soot and the heater may backfire when lit. If the gas quality or pressure is low, contact your local gas supplier immediately.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

 

 

ODS/pilot lights, but flame

1.

Control knob not fully pressed in.

goes out when control knob is

2.

Control knob not pressed in long enough.

released.

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.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.

Burner does not light after ODS/

1.

Burner orifice is clogged.

1.

Clean orifice.

pilot is lit.

2.

Burner orifice diameter is too small.

2.

Replace burner orifice.

 

3.

Inlet gas pressure is too low.

3.

Contact qualified service person.

 

 

 

 

 

Burner backfires during com-

1.

Manifold pressure is too low.

1.

Contact local gas company.

bustion.

2.

Burner orifice is clogged.

2.

Clean burner or replace burner orifice.

 

 

 

 

 

Slight smoke or odor during

1.

Burner orifice is clogged or damaged.

1.

Clean burner or replace burner orifice.

initial operation.

2.

Burner is damaged.

2.

Replace burner.

 

3.

Gas regulator defective.

3.

Replace gas regulator.

 

 

 

 

 

Logs appear to smoke after ini-

1.

Vapors from paint or curing process of logs.

1.

Problem will stop after a few hours

tial operation.

 

 

 

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.

 

 

 

 

 

Heater produces a whistling

1.

Turning control knob to HIGH position when

1.

Turn control knob to LOW position and

noise when burner is lit.

 

burner is cold.

 

let warm up for a minute.

 

2.

Air in gas line.

2.

Operate burner until air is removed from

 

 

 

 

line. Have gas line checked by local

 

 

 

 

gas company.

 

3.

Dirty or partially clogged burner orifices.

3.

Clean burner or replace burner orifice.

 

 

 

 

 

No gas to pilot.

1.

LP-regulator shut down due to inlet pressure

1.

Verify LP tank regulator is installed and

 

 

too high.

 

set at 11" to 13" w.c.

 

 

 

2.

Replace regulator on heater.

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Image 34
Monessen Hearth DEB20, DEB30 manual ODS/pilot lights, but flame
Page 33 Page 35

DEB20, DEB30 specifications

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