Lennox Air Handler CBA25UHV-042

Is the thermostat set to FAN ON?

Pour several quarts of water into drain pan, enough to fill drain trap and line.

Check to make sure the drain pan is draining completely

No leaks are found in drain line fittings

Water is draining from the end of the primary drain line

Sign off on the condensate drain test

Set thermostat to force a call for cooling (approximately 5ºF lower than the indoor ambient temperature)

The outdoor unit should come on immediately

The indoor blower should start between 30 - 60 seconds later

Check the air flow from a register to confirm that the system is moving cooled air

Set the thermostat 5ºF higher than the indoor temperature. The indoor blower and outdoor unit should cycle off

IMPORTANT: Filter access door must be in place during unit operation. Excessive warm air entering the unit from unconditioned space may result in water blow-off problems.

Filters may be duct-mounted or installed in the cabinet. A filter is installed at the factory. Note that filter access door fits over access panel. Air will leak if the access panel is placed over the filter door.

Filters should be inspected monthly and must be cleaned or replaced when dirty to assure proper furnace operation.

1 - Loosen the thumbscrews holding the filter panel in place.

2 - Slide the filter out of the guides on either side of cabinet.