Lennox Cooling Unit LCH092H

Shut off power supply and gas to unit

Disconnect pressure switch air tubing from combustion air inducer port

Remove and retain screws securing combustion air inducer to flue box

Clean inducer wheel blades with a small brush

Remove combustion air inducer assembly

Remove flue box cover and clean

Inspect the condition of the all-aluminum coils

Are the all-aluminum coils free from debris and obstructions?

Inspect the condition of the fin/tube coils

Are the fin/tube coils clean and unobstructed?

Inspect the evaporator coil for dirt and debris

Is the coil free from visible damage?

Clean the coil using mild detergent or commercial coil cleaner

Flush the condensate drain with water

Ensure the following components remain dry during flushing

Turn off electrical power to the unit

Turn off gas supply to the unit

Remove burner compartment access panel

Remove screws securing burners to burner support