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.

1.

Press in control knob fully.

goes out when control knob is

2.

Control knob not pressed in long enough.

2.

After ODS/pilot lights, keep control

released.

3.

Manual shutoff valve not fully open.

3.

knob pressed in for 30 seconds.

 

Fully open manual shutoff valve.

 

4.

Thermocouple connection loose at control

4.

Hand tighten thermocouple connection

 

 

valve.

 

until snug, then tighten 1/4 turn more.

 

5.

Pilot flame not touching thermocouple, which

5.

Contact local gas company.

 

 

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.

6.

Replace thermocouple.

 

7.

Control valve damaged.

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

 

3. Dirty or partially clogged burner orifices.

 

gas company.

 

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.

59D1015

37

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Image 37
Monessen Hearth HVFL18 manual ODS/pilot lights, but flame

HVFL18 specifications

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