Carrier D Manual De Instalación página 6

Type D Electronic Control
Control
Light indicators
Blue LED
ON Indicates that the control is in cooling mode ( ).
Flashing Indicates that the control is in frost protection
mode ( ).
Red LED (group on the right)
ON Indicates that the control is in heating mode ( ).
Flashing
Indicates the presence of a fault (sensor failed
or not connected).
Yellow LED ( ) (group on the right)
ON Indicates that the control is in automatic mode
( ).
Blue LED + Yellow LED
Both ON Indicates that the control is in automatic mode
( ) - cooling mode ( ).
Red LED + Yellow LED
Both ON Indicates that the control is in automatic mode
( ) - heating mode (
Red LEDs (group on the left)
ON
Indicates that the fan is operating at the
selected speed.
Yellow LED ( ) (group on the left)
ON
Indicates that the selection of the fan speed is
set automatically.
Red / Blue LED
Flashing Indicates that the control is in "Autotest" mode.
Green LED ( )
ON
Indicates that the control is in Energy Saving
mode.
Flashing
External contact is open.
"Dip-switch" functions (microswitch)
Dip-switch 1
In open contact position, it permits to activate the frost protection
function ( ).
Dip-switch 2
In open contact position, it permits the fan operation at the selected
speed even if the set point temperature is satisfied.
Dip-switch 3
In open contact position, it restricts the range of the temperature
selection knob according to the following limits:
Cooling:
minimum selectable temperature: 23°C.
Heating:
maximum selectable temperature: 21°C.
Dip-switch 4
In open contact position, it permits to activate the fan periodically
even if the set point temperature is satisfied (air sampling).
Dip-switch 5
In open contact position, it permits to activate the Booster Heating
function (additional heating).
Dip-switchs 6, 7 and 8
The position of these dip-switches regulates the control current of
the motor. A higher voltage corresponds to a higher speed of the
fan. The selection is made according to the following table:
Jumper 1 Jumper 2 Jumper 3
Closed Closed Closed
Closed Closed Open
Closed Open Closed
Closed Open Open
Open Closed Closed
Open Closed Open
Open Open Closed
Open Open Open
GB - 4
).
LOW MID HIGH
2V 6V 10V

2V 4V 6V

6V 8V 10V

2V 3V 4V

8V 9V 10V

5V 6V 7V

4V 6V 8V

3V 6V 9V

NOTE:
Factory setting is with all dip-switches in close position.
Use of temperature sensor
Internal sensor: This is used in all installations where the control is
wall-mounted. To activate it, close jumper JP1 as shown in figure A
and on the electronic board screenprint.
Remote sensor: This is used on all installations with unitmounted
control. It is positioned on the return air, close to the fan. To
activate it, close jumper JP1 as shown in figure B and on the
electronic board screenprint.
3 2 1
Fig. A
Internal sensor
NOTE: Factory setting is with activated internal sensor.
Diagnostic warnings
The following alarm situations are indicated:
Defective sensors: the red LED flashes.
Possible causes:
• failure or short circuit of internal sensor;
• failure or short circuit of water temperature sensor.
Autotest
The autotest function is activated by holding the seasonal
changeover button pressed and at the same time pressing the " "
button three times within 1 second.
In this way it is possible to check the starting of all fan coils. The
blue and red LEDs will begin to flash.
Each of the various units will be activated for 10 seconds in the
following sequence:
Low fan speed.
Medium fan speed.
High fan speed.
CV
Motorized cold-water valve.
HV
Motorized hot-water valve.
Fig. 8
3 2 1
Fig. B
Remote sensor
Fig. 9