Water Pump Management; Pump Unblocking Procedure; Output Configuration; Pump Down - Carrier 80AWX Serie Manual Del Usuario

Controller operation

Water pump management

This function works only if room temperature is measured
by the system (code 105.0=1 or 4).
If code 1.6=0, water pump is always running during space
heating / cooling operations.

Pump unblocking procedure

This function is active in all operative modes, including OFF.
If the water pump is OFF for 24 hrs, it is activated for some
time to avoid locking.

Output configuration

Multi – purpose output (see paragraph Terminal block
description) can be configured to perform different
functions (code 108).
Fan coil
The output can be used to turn ON / OFF fan coil units. The
available options are shown in the variable table.
Dehumidifier
The output is used to turn ON/OFF a dehumidifier.

Pump Down

Setting code 147=10, it is possible to force the outdoor unit
in Cool mode (also in case of Heating only systems) for 5
minutes, to allow the pump down of the refrigerant.

Silent mode

It is possible to reduce the maximum compressor frequency
in defined time periods.
See user interface documentation.
Frequency reduction is expressed as % of maximum
frequency and is set by code 3.

Zone control settings

Code 105.0 defines which kind of room control is
implemented.
0. No control: room temperature is not controlled; comfort is
only depending on climatic curve settings.
1. User interface: an additional user interface (see paragraph
Accessories) is connected to the unit and is placed in the
room.
2. Sensor: used only in combination with 2 zone kit.
If code 1.6=1, water pump is turned OFF if room
temperature overshoots the setpoint point by code 4 (°C),
and turned ON if room temperature is below (in heating,
above in cooling) room setpoint by code 4 (°C).
Dehumidifier is turned on in Cool mode, when humidity is
higher than value of code 110.
It works only if room control is done by user interface (code
105.0=1 or 4).
Alarms / Defrosting
The output is activated to signal some specific conditions.
See variable table for details.
After 5 minutes operation, the code is self reset to 0.
After Pump Down, the unit will remain OFF until electrical
power is reset.
When Silent mode is activated, the outdoor unit will be less
noisy, but also less powerful, therefore backup and booster
heaters could be used more often.
3. Thermostat: a thermostat is connected to the Heat / Cool
thermostat input.
4. Unit user interface shifted: unit user interface is removed
from the unit and placed in the room .
In case the user interface is shifted, fill the gap left on the
unit with the provided cap (see fig. 4, item 3).
80AWX- 80AWH
25