Troubleshooting Guide - Lennox Montebello MDLX40IN Care And Operation Instructions Manual

LENNOX HEARTH PRODUCTS • MONTEBELLO

TROUBLESHOOTING GUIDE

NOTE: Before troubleshooting the gas control system, make sure the external gas shut off valve, located at gas supply inlet, (and
wall switch, if applicable), is in the "ON" position. Valve system troubleshooting should only be performed by a qualifi ed
service technician.
SYMPTOM
Nothing happens when the
fi replace is turned on or off.
The main burner does not light
and the igniter is sparking.
The burner lights, then
immediately goes out.
Log and glass soot
*The unit may have multiple gas supply shutoffs (the main gas supply valve in the house, the gas supply valve in the fi replace
control compartment, and/or an additional shutoff valve near the fi replace).
® DLX DIRECT VENT GAS FIREPLACES (MDLX40/45) • CARE AND OPERATION INSTRUCTIONS
POSSIBLE CAUSES
Remote control system is not
functioning properly.
Unit is not receiving power.
Gas is not reaching the fi replace.
Gas is not reaching the fi replace.
Loose wires to the valve.
Loose wires to ignition module.
Air in the gas line.
Gas is not reaching the fi replace.
Loose wires to the valve or
ignition module.
Pilot fl ame is not engulfi ng the sensor.
Obstructed vent system.
Flame impingement on the top log.
Improper Air shutter opening.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
CORRECTIVE ACTION
To use the remote control system, the wall
switch plate must be set to REMOTE.
Manually operate the fi replace using the wall
switch (ON/OFF).
Replace the batteries in the handheld remote
and/or behind the wall switchplate.
Check/replace batteries behind the
wall switchplate.
Check building circuit breakers to ensure power
is on to the fi replace.
Check the gas supply and gas shutoff valves (call
a service technician, if required).*
Check the gas supply and gas shutoff valves (call
a service technician, if required).*
Check control compartment for any obvious
loose wiring (call a service technician).
Check control compartment for any obvious
loose wiring (call a service technician).
Purge gas line of air (call a service technician).
Check the gas supply and gas shutoff valves (call
a service technician, if required).*
Check the gas supply and gas shutoff valves (call
a service technician, if required).*
Call a service technician.
Call a service technician.
Check for proper log placement.
Check for proper air shutter openings.
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