HEAT PUMP CONTROL (A175) UNIT NOMINAL CAPACITY CODE CONFIGURATION
In a communicating system, if the room thermostat is indicating either a error code 313, indoor and outdoor unit
capacity mismatch error code, or error code 34, must program unit capacity for outdoor unit. Use the procedure provided in figure 36 to set the unit nominal capacity code.
START
Set room thermostat
to OFF
Go to control terminal
strip
Remove R wire
from control (24 volt
AC power)
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icomfort® |
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enabled |
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Remove control |
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| Remove control | |||
wires from i+ and |
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| wire from Y1 | |||
i− terminals |
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DS14 (Red)
DS11 (Green)
Field Test | STRIP | |
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(E33) | TERMINAL | |
DS12 | ||
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Communicating |
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Status Indicator |
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Sensor harness |
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must be attached |
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to air conditioner |
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control. |
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FINISH
Connect R wire to control (24 volt AC power)
Reconnect any control
wiring previously
removed.
Remove R wire from air conditioner control (24 volt AC power)
Place jumper on |
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FIELD TEST |
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(E33 pins) |
| Place jumper on FIELD |
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| TEST (E33 pins) within 2 to 4 |
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| seconds after removal |
Connect R wire to control |
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(24 volt AC power) |
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| The control´s DS11 and DS14 LEDs will |
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| start blinking the Unit Nominal Code at |
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| three (3) second intervals starting at 1−ton |
Status LED lights DS11 |
| through to 6−ton. If a code is not selected, |
and DS14 will blink and |
| the control will cycle one more time |
then on continuously. |
| through the codes before defaulting back |
Once both LEDs are on |
| to the idle mode (simultaneous slow |
continuously then remove |
| flash). |
jumper immediately from |
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E33. |
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If jumper is not removed |
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immediately from E33, then DS11 |
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and DS14 LEDs will resume |
| Long blink ON red LED (DS14) to indicate |
blinking again. |
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| tonnage and solid ON green LED (DS11) | |
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| to indicate ½ tonnage. |
YES |
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Jumper |
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removed |
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successfully |
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Remove R wire | NO |
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from control (24 volt |
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AC power) |
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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.
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| DS11 |
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| Green | DS14 |
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| Model | Size | LED | Red LED |
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| −012 | 1−ton | OFF | 1 long flash |
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| −018 | 1.5−ton | ON | 1 long flash |
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| −024 | 2−ton | OFF | 2 long flashes |
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| −030 | 2.5−ton | ON | 2 long flashes |
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| −036 | 3−ton | OFF | 3 long flashes |
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| −042 | 3.5−ton | ON | 3 long flashes |
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| −048 | 4−ton | OFF | 4 long flashes |
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| −054 | 4.5−ton | ON | 4 long flashes |
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| −060 | 5−ton | OFF | 5 long flashes |
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| −066 | 5.5−ton | ON | 5 long flashes |
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| −072 | 6.0−ton | OFF | 6 long flashes |
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Figure 36. Heat Pump Control (A175) Unit Nominal Capacity Code Configuration
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