Lennox Signature XP21 Series Installation And Service Procedure page 50

Configuring Unit Capacity or Fan Profile
Power−up − Unit capacity (two−digit number) and displayed
represents unit size code (outdoor unit capacity).
During initial power up, the number of stages / unit type, unit
capacity and outdoor fan speed will appear on the 7−segment
display.
If three horizontal bars display in any part of the 7−segment
display string sections during power−up, the outdoor control
did not store that configuration (unit type, capacity or fan
RPM). If this happens, the configuration sequence for that
section of the string must be repeated.
To enter unit capacity or fan
profile configuration, push
and hold button next to single
character display until dash
symbol appears and
immediately release button.
Once dash starts blinking,
proceed to next step.
Push and hold button until the solid
PC or PF sequence is displayed on
the seven−segment display and then
immediately release the button. This
configuration sequence allows the
installer to select a unit type (number
/ letter combination) that matches
the outdoor unit type and number of
stages.
Either the PC or PF sequence
will repeat 5 times and if a
selection is not made the
control will return to idle mode.
Press and hold the button
during the PC or PF cycling
display.
SELECTED
NOTES
1. Determine fan motor−type (EBM or ECM).
2. Units with EBM motors − The fan motor RPM must be field
set or three bars will appear in the fan profile string section of
the 7−segment display. The factory default is 700 RPM.
3. Units with ECM motors − The fan motor RPM is factory set
and can not be adjusted. The ECM motor speed (fan profile)
string will not appear on the 7−segment display. The fan profile
displayed is applicable only to EBM fan motor applications.
If three horizontal bars display in any part of the 7−segment
display string during power−up, the outdoor control did not
store that configuration (unit type, capacity or fan profile). If
this occurs, the configuration sequence for that section of the
string must be repeated.
XP21
- -
-
Outdoor control is in IDLE mode
Yes
(No heating or cooling demand)
_
_
UNIT CAPACITY
P C
F
P
FAN PROFILE
NOT
SELECTED
- -
-
- -
-
SEVEN−SEGMENT
DISPLAY
PUSH BUTTON
No
Unit Capacity Code
1−TON
12
P C
1−1/2−TON
18
2−TON
24
2−1/2−TON
30
3−TON
36
3−1/2−TON
42
4−TON
48
5−TON
60
1. When the correct unit capacity or fan profile is
displayed, release button immediately. [Dis-
play will start blinking]
2. Push and hold button until selection stops
flashing during one of the three cycles. [Re-
lease push button]
3. If selection is not made during those three
cycles the control will return to idle mode.
The outdoor control will store unit type in memory and will automati-
cally exit the configuration and reset control.
During power up of the outdoor control, the seven−segment display will show the
stored number of stages unit type, capacity and outdoor fan speed.
2 H P
PAUSE
2−Stage Heat Pump
Page 50
OUTDOOR CONTROL
Turn room thermostat
to OFF
Fan Profile Code (see notes)
P F
SEE NOTE 1
EBM fan motor
ECM fan
with blades
motor
SEE
SEE NOTE 2
NOTE 3
See table 18 for
fan profile.
END
SELECTED
3 6 2
PAUSE
Capacity (3−Ton) Fan Profile
NOT
SELECTED