WARNING: The blower access panel must be securely in place when the blower and burners are operating. Gas fumes, which could contain carbon monoxide, can be drawn into living space resulting in personal injury or death.
CAUTION: To ensure proper operation, a licensed professional service technician (or equivalent) should check the burner flame and conduct a combustion analysis annually.
Call your Lennox service technician if the unit will not operate. Before calling, always check the following to be sure service is required:
Record the model and serial number of the furnace. These numbers are on the unit nameplate, which is located on the blower deck below the combustion air inducer.
You should expect a service technician to check the following items during an annual inspection. Power to the unit must be shut off for the service technician’s safety.
Fresh air grilles and louvers (on the unit and in the room where the furnace is installed)
Must be inspected for
Blower access door
Return air duct
Pay attention to your furnace
Repair Parts List
The following repair parts are available through Lennox dealers. When ordering parts, include the complete furnace model number listed on the CSA International nameplate −− Example: ML193UH045P36B. All service must be done by a licensed professional insta
Control Panel Parts