Page 48
XC21
AIR CONDITIONER CONTROL (A175) UNIT
NOMINAL CAPACITY CODE CONFIGURATION
In a communicating system, the unit capacity code must be
configured if the room thermostat is indicating either an
alert code 313, indoor and outdoor unit capacity mismatch
error code, or alert code 34, must program unit capacity for
outdoor unit. Use figure 26 to configure the unit normal
capacity code.
When the required Unit Capacity Code
is displaying on the LEDs, remove
FIELD TEST jumper from pins (E33).
LEDs will continue to display the
selected unit capacity code for two (2) minutes
before defaulting back to the idle mode
{simultaneous slow flash}, or until the 24 volt
power is cycled to the air conditioner control.
START
Set room thermostat
to OFF
Go to air conditioner
control terminal strip
Remove R wire
from air conditioner
control (24 volt AC
power)
icomfort
®
enabled
Remove control wires
from i+ and i− terminals
Non − icomfort
®
enabled Remove
control wire from Y1
terminal
Place jumper on
FIELD TEST
(E33 pins)
Connect R wire to air
conditioner control (24
volt AC power)
DS14 (Red)
DS11 (Green)
TERMINAL STRIP
Status LED lights DS11
and DS14 will blink and
then on continuously.
The lights must be on
continuously to proceed
to the next step.
Place jumper on FIELD
TEST (E33 pins) within 2 to
10 seconds after removal
Remove jumper
from FIELD
TEST (E33 pins)
between 2 to 10
seconds.
The air conditioner control´s DS11 and
DS14 LEDs will start blinking the Unit
Nominal Code at three (3) second
intervals starting at 1−ton through to
6−ton. If a code is not selected, the air
conditioner control will cycle one more
time through the codes before defaulting
back to the idle mode (simultaneous
slow flash).
Long blink ON red LED (DS14) to
indicate tonnage and solid ON green
LED (DS11) to indicate ½ tonnage.
Model
DS11
Green
LED
Size
DS14
Red LED
−012
−018
−024
−030
−036
−042
−048
−054
−060
−066
−072
1−ton
1.5−ton
2−ton
2.5−ton
3−ton
3.5−ton
4−ton
4.5−ton
5−ton
5.5−ton
6.0−ton
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
1 long flash
1 long flash
2 long flashes
2 long flashes
3 long flashes
3 long flashes
4 long flashes
4 long flashes
5 long flashes
5 long flashes
6 long flashes
FINISH
Field Test
(E33)
DS12
Communicating
Status Indicator
Sensor harness
must be attached
to air conditioner
control.
Remove R wire from
air conditioner control
(24 volt AC power)
Connect R wire to air
conditioner control (24
volt AC power)
Reconnect any control
wiring previously
removed.
Figure 26. Main Control (A175) Unit Nominal Capacity Code Configuration (XC21−XXX−230−04 and 05)
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