User Interface (Terminal); Status Of The Unit - Gattetti LCA User Manual

3 User Interface (Terminal)

The terminal allows the access to the data of the unit.
The terminal can be supplied either in panel-mounting version or, for remote
connection, in wall-mounting version .
On the terminal there are 5 LED indicators to indicate the status of the unit
(Cooling/Heating), the status of the compressors (ON/OFF) and the timer for
compressors/pump after 100 operating hours. The wall-mounted version,
moreover, can be remoted up to 150m through an optional board to be placed
near the single compressor board.
An internal buzzer (which can be excluded in both versions via dip-
switch or via dedicated parameter) signals any alarm in the unit.
Display
The display consists of 3 digits, with the automatic display of the
decimal point between -19.9 and + 19.9°C; outside this measurement
range, the value is automatically displayed without decimal - e.g. 21 -
(although in its inside the machine is always operating by taking into
account the decimal part). During the normal operation, the displayed
value corresponds to the temperature being read by the probe B1, that
is the evaporator water in-let temperature.

3.1 Status of the unit

The User is informed of the status of the unit by means of five LED indicators on the terminal display and two LED indicators
(yellow and green) placed on the main board.
Meaning of LED indicators in single-compressor units
LED Flashing
Not used
Comp. (left)
Comp. (right) Request for compres. 1
-
Cooling
-
Heating
-
x100
Meaning of LED indicators in two-compressor units
LED Flashing
Comp. (left) Request for compres. 1
Request for compres. 2 or
Comp. (right)
Request for compres. 1 at 100%
-
Cooling
-
Heating
-
x100
Yellow and green LED indicators on the main board.
The yellow LED indicator informs the User of the correct operating of the unit. During normal operation it blinks every 1
second. In case of alarm condition it flashes more rapidly (about 2 times per second). In case of LED off the unit is
disconnected from power supply.
The green LED indicates that communication between unit and remote terminal is OK. In case of communication failure, the
green LED turns off (usually due to a problem with the cable or to a not good contact between the cable and its relative
female telephone connector on the main board or on the terminal).
RG66000889-REV.00
Figura 1 Panel mounting terminal
Figura 2 Wall mounting terminal
Steady
Not used
Compressor 1 actuated
Cooling
Heating
Value x100
Steady
Compressor 1 actuated
Compressor 2 actuated or
Compressor 1 actuated at 100%
Cooling
Heating
Value x100
5