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LENNOX HEARTH PRODUCTS • MONTEBELLO
®
SEE-THROUGH DIRECT-VENT GAS FIREPLACES (LSM40ST-N / LSM40ST-P) • CARE AND OPERATION INSTRUCTIONS
TROUBLESHOOTING THE MONTEBELLO
™
LSM40ST FIREPLACE
Note:
Before troubleshooting the gas control system, make sure the external gas shutoff valve (located at gas supply inlet)
is in the “ON” position.
Important: Valve system troubleshooting should only be accomplished by a qualified service technician.
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
1.
Nothing happens when fireplace
is turned On/Off.
A.
Remote is not functioning properly.
•
Check that the wall switch plate is set to remote
(if remote was used).
•
Operate the fireplace from the wall plate switch.
•
Replace remote and/or receiver batteries.
B.
Gas is not reaching the fireplace.
Check the gas supply and gas shutoff valves.
C.
Unit is not receiving power.
•
Check/replace backup batteries behind wall plate.
•
Check building circuit breakers to ensure power
is on to the fireplace.
2.
The main burner does not light,
and the igniter is sparking.
A.
Gas is not reaching the fireplace.
Check the gas supply and gas shutoff valves.
B.
Loose wires to the valve.
Check control compartment for any obvious loose
wiring (call a service technician if required).
C.
Loose wires to ignition module.
Check control compartment for any obvious loose
wiring (call a service technician if required).
D.
Air in the gas line.
Call a service technician.
3.
The main Burner comes on,
but then goes out.
A.
Gas is not reaching the fireplace.
Check the gas supply and gas shutoff valves.
B.
Loose wires to valve or ignition module.
Check control compartment for any obvious loose
wiring (call a service technician, if required).
C.
Pilot flame is not engulfing the sensor.
Call a service technician.
D.
Obstructed vent system.
Call a service technician.
4.
Soot is present on logs and glass.
A.
Excessive flame impingement on logs.
Check for proper log placement.
B.
Improper air shutter opening.
Open the air shutter by pulling on the air shutter
adjustment lever.
f i r e - p a r t s . c o m
