Operation; Contrast Adjustment; Temperature Sensor Calibration; Running The System - Carrier Conex II Manual Del Usuario

Operation

The Conex II is an interface to set operating parameters,
monitoring, and servicing the system.
The most relevant user information is shown on the main
screen.
To navigate through the parameters, press the up and down
keys: parameters are numbered, press the up key to switch
to the next parameter, and the down key to switch to the
previous parameter.
To change the value of the selected parameter press the (+)
or (–) keys; some parameters are read only.
The list of the available parameters and the corresponding
numbers is product specific, so it is shown in the product
instruction manual.
On some products, parameters are divided in two
categories: user parameters and installer parameters.

Contrast adjustment

Press simultaneously the (+) and (–) keys until "CONTRAST"
is displayed. Use the (+) or (-) keys to select the desired
contrast value.
To exit contrast mode press the up and down keys or wait 45
seconds without touching the keys.
The display returns to user mode.

Temperature sensor calibration

To enter calibration mode, go on code 0 and press the down
button until SENSOR E = 0.0 is displayed.
To adjust the room temperature sensor measurement, press
buttons (+) and (-).
To calibrate the water temperature sensor, press the up
button until SENSOR B = 0.0 is displayed.
To adjust the sensor measurement, press buttons (+) or (-);
value is modified by steps of 0.1.
To leave calibration mode, press the down button for 5
seconds.
The display returns to user mode.

Running the system

Here below a description of basic user operations; for a full
description refer to the product manual.
The images are just for illustrative purpose.
Some of the following settings are only possible on specific
products and in specific operating modes.

Switching the system ON or OFF

Press the up and down keys until the corresponding code is
displayed (please refer to the product manual), then press
the (+) or (-) keys to choose ON or OFF.
See fig. 3
Conex II
4
To access installer parameters, press simultaneously the
up and down keys until the spanner is displayed. To exit
installer mode, don't press any key for 1 minute.
Note: the user is not allowed to enter installer
parameters.
The Conex II user interface integrates a room temperature
sensor, so it is advised to install it in a position which is
representative of the ambient temperature.
However it is also possible to install it on the hydronic
module, even though, in this case, ECO mode, Antifreeze
mode and cooling mode are not working properly.
Selecting heating/cooling mode
Press the up and down keys until the corresponding code is
displayed (please refer to the product manual), then press
the (+) or (-) keys to choose heating or cooling operation.
Depending on the product there might be a delay of some
minutes between the selection and the beginning of the
operation.
See fig. 4