Program Unit Capacity Size Mode - Lennox SL280UHNX Series Unit Information

IX- 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:
To enter Program Unit
Capacity/Size:
and hold button next to
7-segment LED display
until solid "P" symbol
appears. Release
button.
IMPORTANT: Field replacement controls may
need to be manually configured to validate
furnace unit size code.
P
Solid
blinking
7-Segment LED
Push and hold button. Integrated control will
display unit size code number for each
furnace model for three seconds.
No heating, cooling or indoor fan
Yes
push
_
starts
P
on
FINISHED
Furnace control in IDLE mode
operation)
UNIT SIZE
CODE
FURNACE MODEL
A
SL280UH070V36A
b
SL280UH090V36B
C
SL280UH090V48B
d SL280UH090V60C
E
SL280UH110V60C
F
SL280UH135V60D
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
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)
Page 73
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No
Turn room thermostat to OFF
UNIT SIZE
CODE
FURNACE MODEL
H
SL280DF070V36A
J
SL280DF090V48B
L SL280DF090V60C
n
SL280DF110V60C
will automatically exit Program
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