TROUBLESHOOTING

DFX & DBX Series Vent Free Fireplaces

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

2.

After ODS/pilot lights, keep control

released.

 

enough.

 

knob pressed in for 30 seconds.

 

3.

Manual shutoff valve not fully open.

3.

Fully open manual shutoff valve.

 

4.

Thermocouple connection loose at control

4.

Hand tighten thermocouple connec-

 

 

valve.

 

tion until snug, then tighten 1/4 turn

 

 

 

 

more.

 

5.

Pilot flame not touching thermocouple,

5a.Contact local gas company.

 

 

which allows thermocouple to cool, caus-

5b.Clean pilot with vacuum cleaner.

 

 

ing pilot flame to go out. This problem could

 

 

 

 

be caused by either low gas pressure, or a

 

 

 

 

dirty or partially clogged ODS/pilot.

6.

Replace thermocouple.

 

6.

Thermocouple damaged.

 

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 ori-

 

 

 

 

fice.

Slight smoke or odor during

1. Burner orifice is clogged or damaged.

1.

Clean burner or replace burner ori-

initial operation.

2.

Burner is damaged.

 

fice.

 

3.

Gas regulator defective.

2.

Replace burner.

 

 

 

3.

Replace gas regulator.

Logs appear to smoke after initial operation.

1.Vapors from paint or curing process of logs.

2.Vapors or smoke continue after heater has run with damper or window open for several hours.

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 smoke- less. Turn OFF heater and call quali- fied service person.

Heater produces a whistling 1.

Turning control knob to HIGH position

noise when burner is lit.

when burner is cold.

2.

Air in gas line.

3. Dirty or partially clogged burner orifices.

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 ori- fice.

No gas to pilot.

1. LP-regulator shut down due to inlet pres-

 

sure too high.

1.Verify LP tank regulator is installed and set at 11" to 13" w.c.

2.Replace regulator on heater.

33D4047

27

Page 27
Image 27
Monessen Hearth DFX24C operating instructions Troubleshooting, Observed Problem Possible Cause Remedy

DFX24C specifications

The Monessen Hearth DFX24C is a stylish and efficient direct vent gas fireplace designed to enhance the ambiance of any living space while providing warmth and comfort. With its sleek design and advanced features, this fireplace brings modern aesthetics to traditional charm.

One of the standout features of the DFX24C is its powerful heating capability, which can produce an impressive output of up to 24,000 BTUs per hour. This makes it an ideal choice for heating areas ranging from family rooms to open-concept living spaces. The direct vent technology employed in this fireplace allows for optimal efficiency by utilizing outside air for combustion while venting exhaust gases to the outside, ensuring that the indoor air quality remains unaffected.

The DFX24C comes equipped with an intuitive remote control, giving homeowners the convenience to adjust the settings at their fingertips. Users can easily regulate the flame height and heat output, allowing for personalized comfort in any situation. Additionally, the fireplace features an impressive standing pilot light that ensures reliability and ease of ignition.

Aesthetically, the Monessen Hearth DFX24C doesn't disappoint. With a large viewing area framed by a clean face design, it allows for an unobstructed view of the beautiful flames dancing within. The realistic log set creates a lifelike portrayal of a traditional wood-burning fireplace, providing the cozy hearth feel that many homeowners desire. The glass front adds to the elegance while reflecting warmth throughout the room.

From a safety perspective, the DFX24C is built with child-safe features, including a safety screen to prevent accidental contact with the hot surfaces. The fireplace is also equipped with a ceramic glass front that withstands high heat while offering excellent thermal efficiency.

Energy efficiency is a critical consideration for many homeowners today, and the DFX24C stands out with its impressive efficiency ratings. With proper installation and maintenance, users can expect lower heating bills and a smaller carbon footprint.

In summary, the Monessen Hearth DFX24C is a perfect blend of modern technology, aesthetic appeal, and efficient heating capabilities. It's an excellent choice for those looking to add both warmth and style to their home, making it a worthy investment for any homeowner seeking to enhance their living space.