Lennox International Inc DAVE LENNOX SIGNATURE COLLECTION GAS FURNACE, SL280DFV

Program Unit Capacity/Size Mode

Power−Up − Number displayed represents by integrated control unit size code (furnace model and capacity). If three horizontal bars are displayed followed by continuous E203, furnace control does not recognize unit size code. Configure per the following:

−

		Yes
To enter Program Unit
Capacity/Size: push
and hold button next to		_
7−segment LED display
until solid	symbol
appears.	Release
button.

IMPORTANT: Field replacement controls may need to be manually configured to validate furnace unit size code.

Solid P	starts	P
blinking	on

7−Segment LED

Push and hold button. Integrated control will display unit size code number for each furnace model for three seconds.

Furnace control in IDLE mode

No heating, cooling or indoor fan No operation)

Turn room thermostat to OFF

UNIT SIZE
CODE	FURNACE MODEL
A	SL280DF070V36A
b	SL280DF090V48B
C	SL280DF090V60C
d	SL280DF110V60C

When the correct unit size code is displayed, release button. Selected code will flash for 10−second period. During that period, press and hold push button for 5 seconds. Integrated control will store code in memory and will automatically exit Program Unit Capacity/Size Mode and reset. (If second period expires or push button is held less than five seconds, control will automatically exit Program Capacity/Size Mode and go into IDLE mode without storing unit size code. If this happens, programming function must be repeated).

Verify that the selected unit size code is correct	−
and stored in non−volatile memory by cycling
the 24 volt power to the furnace control. (At 24
volt power−up of the furnace control, the
7−segment LED will display a unit size code. If
three horizontal bars display, board does not
recognize unit size code. Programming
function must be repeated)

FINISHED

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