Lennox Hearth Essential Lennox Gas Fireplace Troubleshooting Tips for Indoor Models
Page 18

18

TROUBLESHOOTING THE MILLIVOLT GAS CONTROL SYSTEM

Note: Before troubleshooting, make sure that the appliance main line gas shut-off valve and the gas control valve are in the "OPEN" position and the burner ON/OFF switch is in the “ON” position.

Important: Valve system troubleshooting should only be accomplished by a qualified service technician.

 

SYMPTOM

POSSIBLE CAUSES

CORRECTIVE ACTION

 

 

 

 

 

1.

Spark ignitor will not light

A. Defective ignitor

Check for spark at electrode and pilot; if no spark and

 

pilot after repeated

(no spark at electrode).

electrode wire is properly connected, replace ignitor.

 

triggering of ignitor button.

 

 

 

 

 

B. Defective or misaligned electrode

Using a match, light pilot. If pilot lights, turn off pilot and

 

 

 

 

 

 

at pilot (spark at electrode).

trigger the ignitor button again. If pilot lights, an improper gas

 

 

 

 

mixture caused the bad lighting and a longer purge period is

 

 

 

 

recommended. If pilot will not light – check gap at electrode

 

 

 

 

and pilot – should be ¹⁄₈" to have a strong spark. If gap

 

 

 

 

measures ¹⁄₈", replace pilot (Figure 11 on page 8).

 

 

 

 

 

 

 

 

C. Gas supply pressure errant.

Check inlet gas pressure. It should be within the limits as

 

 

 

 

marked on the rating plate.

 

 

 

 

 

 

 

 

D. Pilot orifice plugged.

Clean or replace pilot orifice.

 

 

 

 

 

2.

Pilot will not stay lit after

A. Defective pilot generator

Check pilot flame, it must impinge on thermocouple (Figure

 

carefully following the

(thermocouple).

11 on page 8) Clean and/or adjust pilot for maximum flame

 

lighting instructions.

 

impingement on thermocouple. Ensure that the connection

 

 

 

 

between the valve and thermocouple are tight and secure.

 

 

 

 

 

3.

Pilot burning, no gas to

A. Limit Switch defective.

Isolate the “limit” switch. Disconnect the wires from the “ON/

 

burner, Valve knob “ON,”

 

OFF” switch and the valve (label wires for reattachment). Test

 

Wall Switch “ON.”

 

for continuity with a multimeter. If continuity is not indicated,

 

 

 

 

switch is defective and must be replaced.

 

 

 

 

 

 

 

 

B. Wall switch or wires defective.

Check wall switch and wires for proper connections. Jumper

 

 

 

 

wire across terminals at wall switch, if burner comes on,

 

 

 

 

replace defective wall switch. If okay, jumper wires across wall

 

 

 

 

switch wires at valve, if burner comes on, wires are faulty or

 

 

 

 

connections are bad.

 

 

 

 

 

 

 

 

C. Thermopile may not be generating

Check thermopile with millivolt meter. Take reading at thermo-

 

 

 

sufficient millivoltage.

pile terminals of gas valve. Should read 325 millivolts mini-

 

 

 

 

mum with optional wall switch “OFF.” Replace faulty thermo-

 

 

 

 

pile if reading is below specified minimum.

 

 

 

D. Plugged burner orifice.

Check burner orifice for stoppage and remove.

 

 

 

 

4.

Frequent pilot/burner outage

A. Pilot flame may be too low or

Clean and/or adjust pilot flame for maximum flame impinge-

 

problem.

blowing (high) causing the pilot/

ment on thermocouple (Figure 11 on page 8).

 

 

 

valve safety to drop out.

 

 

 

 

 

 

Page 17 Page 19
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Page 17 Page 19
Contents Retain These Instructions For Future Reference Table of Contents CongratulationsControl Compartment Access Millivolt Control Valve Shown Operation and Care of Your ApplianceElectronic Appliances GasControls/ControlCompartmentAccessMillivolt Appliances Manifold Pressure PortOutside Combustion Air Controls Variable Flame Height Adjustment Millivolt Appliances onlyVenting Action and Safety Limit Operation Outside Air Control Lever Securing Screw LocationManual-Reset Safety Limit Switch MaintenanceFront Glass Enclosure Panel, Removal and Installation Safety Switch Location EBCL-2 ShownMaintenance Schedule Maintenance Task Accomplishing Person ProcedureClean Glass While IT is HOT Propane Burner AdjustmentsMain Burner Factory Shutter Setting ModelsBurner Positioning Log PlacementInstall the unitized log set Bottom of the log set is notched to accommodate the pilotLennox Hearth Products WarrantyReplacement Parts Product Reference InformationON/OFF Wall Switch Kit Accessory ComponentsStandard Remote Control System Model RCL Door Frame KitsCharcoal Finish Louvers Kits Deluxe Remote Control System Model RCL-TAccessory Components Polished Brass and Brushed Stainless Hood KitsScreen Panel Kit Piece Polished Brass and Brushed Stainless Louvers KitsPolished Brass and Brushed Stainless Louvers Kits Touch-Up Paint KitTo Turn OFF GAS to Appliance Lighting Instructions Millivolt GAS ValveLighting Instructions What to do if YOU Smell GASInstructions D’ALLUMAGE Vanne GAZ Millivolt Instructions DallumagePour Fermer LE GAZ QUI Alimente L’APPAREIL To Shut OFF Lighting Instructions ElectronicWhat to do if YOU Smell GAS Front ViewPour Éteindre L’APPAREIL Instructions D’ALLUMAGE ElectronicInstructions D’ALLUMAGE Pour Fermer LE GAZ QUI Alimente L’APPAREILSymptom Possible Causes Corrective Action Troubleshooting the Electronic Ignition System Check vent system for obstructionsGAS Orifices SIT and Honeywell Systems GAS Controls SIT MillivoltGAS Controls Honeywell Electronic DescriptionReplacement Parts List DescriptionNatural and Propane Qty 3a10 Cabinet Corner Post Location 11a 11b31 37 13a 13b Rear Burner Front BurnerPage 875,012M REV. D 05/2004

EBSTNM-2, EBSTPM-2 specifications

Lennox Hearth is a reputable name in the heating and ventilation industry, known for producing high-quality, energy-efficient heating solutions. Among their impressive lineup, the EBSTPM-2 and EBSTNM-2 models stand out for their superior performance and innovative features.

Both models are designed to provide reliable warmth in residential settings while ensuring ease of use and energy efficiency. The EBSTPM-2 comes with a robust pellet-burning system, boasting a high-efficiency rating that ensures optimal heating output with minimal energy consumption. This model is particularly praised for its environmentally friendly operation, utilizing wood pellets as a renewable energy source.

The EBSTNM-2, on the other hand, features a natural gas burning system that offers convenience and clean-burning technology. With its powerful output and adjustable flame settings, users can customize their heating experience to suit their comfort levels. Both models showcase advanced combustion technology, which ensures that they operate efficiently while minimizing emissions and maximizing heat distribution throughout the space.

One of the key characteristics of the Lennox EBSTPM-2 and EBSTNM-2 is their sleek, modern design. They are constructed with high-quality materials that not only enhance durability but also complement various interior aesthetics. The intuitive controls are user-friendly, making temperature adjustments quick and easy.

Safety features are paramount in both models, with built-in mechanisms that prevent overheating and ensure safe operation. This highlights Lennox’s commitment to user safety and product reliability. For added convenience, both models are equipped with an automatic ignition system, allowing for a hassle-free startup process.

Finally, the compact size of the EBSTPM-2 and EBSTNM-2 makes them suitable for a range of spaces, ensuring that homeowners can enjoy efficient heating without sacrificing valuable room space.

In conclusion, the Lennox Hearth EBSTPM-2 and EBSTNM-2 are exemplary models that combine innovative technology, safety, and eco-friendliness. Their ability to provide consistent and efficient heat makes them ideal choices for homeowners looking to enhance their comfort while also being mindful of energy consumption and the environment.
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