TROUBLESHOOTING

NOTE: When troubleshooting the gas control system, be sure the external gas shut off valve, located at the gas supply inlet is in the “ON” position.

IMPORTANT: Call your gas supplier or plumber for additional help with any gas control problem. Valve system troubleshooting should only be accomplished by a qualified service technician.

SYMPTOM

PROBABLE CAUSE

CORRECTIVE ACTION

Thin black coating

Improper log or ember

See Log Set and Ember Installation.

(soot) forms on the

placement.

 

viewing glass, logs, or

 

Check for obstructions in vent pipe, check for proper restrictor setting. See Flue Restric-

firebox.

Blocked flue.

 

 

tors.

 

Improper air shutter

See Air Shutter Adjustment.

 

setting.

 

Humming or whistling

Normal operating noise.

See Quiet Operation. The noise may be reduced by slightly turning the flame down. Turning

coming from fireplace.

 

the flame down will reduce the heat output of the fireplace.

 

Dirt in burner orifice.

Clean orifice.

 

 

 

A change in flame

A change in gas pres-

Have your gas supplier check for correct gas pressure (7” W.C. natural gas; 11” W.C. LP

appearance or burner

sure.

gas).

operation.

 

See Log Set and Ember Installation.

 

Improper ember or log

 

 

 

placement.

 

 

 

 

Pilot will not light.

No gas supplied to unit.

Turn on gas.

 

Air in line.

To purge, hold in control knob in pilot position for 1-2 minutes and light.

 

Defective igniter (no

Check for spark at electrode and pilot, if no spark and electrode wire is properly connected,

 

spark at electrode).

replace igniter.

 

The valve control knob

See Lighting Instructions.

 

is not turned to “pilot”

 

 

and pushed in.

 

 

 

 

Pilot will not stay lit

Pilot flame is not sur-

Check pilot flame adjustment (see Maintenance and Servicing section).

after carefully following

rounding thermocouple.

 

lighting instructions.

Thermocouple not

Check the connection between the thermocouple lead and the valve. Turn control knob to

 

 

generating sufficient

“pilot” and push in and light pilot. While lit, take millivolt reading at lead going into valve’s

 

voltage.

CPU. Minimum reading should be 17 millivolts. If less, replace thermocouple.

 

Air in gas supply line.

Purge air in pilot gas line by holding in control knob at “pilot” and sparking igniter. The air

 

 

in the line may take up to several minutes to purge.

Main burner will not

Pilot has gone out.

See Lighting Instructions.

burn.

Rocker switch or

Disconnect rocker switch and thermostat wires at terminals 1 and 3 on valve. Jumper

 

 

thermostat wires are

across from 1 to 3 with pilot lit. If burner comes on either rocker switch or thermostat wir-

 

defective.

ing is not functioning.

 

Thermopile may not be

Make sure thermopile is fully engulfed by the pilot flame. Check thermopile with millivolt

 

meter. With pilot lit and the rocker switch and thermostat off, the millivolt reading with the

 

generating sufficient

meter connected to valve terminals 1 and 2 should be after 2 minutes at least 325. If the

 

millivolts.

thermopile lead connections are good at terminals 1 and 2 and readings are less than 325,

 

 

replace faulty thermopile.

23

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Lennox Hearth VIN operation manual Troubleshooting, Symptom, Corrective Action
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VIN specifications

Lennox Hearth is renowned for its cutting-edge heating solutions, specifically their versatile VIN (Vent-Free Indoor Natural Gas) fireplaces. These fireplaces are designed to provide warmth and comfort while enhancing the aesthetic appeal of any living space. With an emphasis on efficiency, style, and safety, Lennox Hearth's VIN products offer an array of features and technologies that cater to diverse customer needs.

One of the standout features of Lennox VIN fireplaces is their vent-free design. This technology allows for easy installation and flexibility in placement, as there is no need for external venting systems. Homeowners can enjoy the cozy ambience of a fireplace in virtually any room without the hassle of structural modifications often required for traditional fireplaces. The design also maximizes heat efficiency by utilizing all of the fuel to produce warmth, eliminating heat loss associated with venting.

The VIN fireplaces are equipped with advanced heating technologies, including the use of innovative ceramic burners. These burners deliver a realistic flame effect while effectively heating the room. Lennox Hearth has incorporated a system that allows for variable heat output, allowing users to adjust the intensity of warmth according to their preferences and the size of the space.

In terms of safety, Lennox takes pride in integrating user-friendly features. The VIN models come equipped with oxygen depletion sensors, which automatically shut off the unit if oxygen levels drop to unsafe levels, ensuring peace of mind for users. Additionally, the fireplaces are designed with high-quality, durable materials that enhance their longevity, making them a worthwhile investment for homeowners.

Aesthetically, Lennox VIN fireplaces are available in a variety of styles, finishes, and sizes. This versatility allows customers to select models that complement their home décor, whether they prefer a modern, sleek look or a more traditional design. Optional decorative fronts and logs further allow for personalization, ensuring each fireplace can serve as a focal point in the room.

In conclusion, Lennox Hearth VIN fireplaces combine innovative technology, safety features, and elegant design to provide an unparalleled indoor heating experience. With the ability to enjoy the warmth and ambiance of a fireplace without the constraints of venting, these units stand out as a practical and stylish solution for today’s modern homes. Whether for cozy family gatherings or quiet evenings, Lennox Hearth VIN fireplaces promise comfort and style for every household.
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