AERMEC MCR Manuel D'utilisation page 27

6 LED FUNCTIONS
ACTIVATION OF SELF-TEST FUNCTIONALITY
To make it easier for installers or technical assistance personnel to test the system, a self-test function has been added.
6 7 8
To access it, press the SW2 button for about 10 seconds. When the DL1 LED flashes every 2 seconds, the self-test procedure is activated.
Each press of the SW2 button enables the operation of the following load:
SW2 key pressure
Activation of the procedure with 10 seconds pressure
1st pressure
2nd pressure
3rd pressure33.33
4th pressure
5th pressure

Note: At the end of the self-test procedure the controller will resume normal operation.
DL1: MASTER CONDITION DISPLAYS
During normal operation the led DL1 indicates if the MCR board is the master of the local TTL serial, specifically it indicates if it has detected the presence of the user interface
at its start up.
DL2: ANOMALY DISPLAYS
The MCR control board can identify and report the following malfunctions:
— Faulty room probe;
— Anti-freeze functioning;
— Water temperature in coil not suitable for operation;
— User interface not connected;
— Condition of condensate formation in the exchanger reached;
— Fresh air temperature not suitable for operation.
In the presence of one of these anomalies, the controller activates the signal by switching on the DL2 LED (blue LED).
22/04 – 5572952_00
R9
R10
DL1
R11
DL2
DL3
SW2A
9 10
AO1 output activation (100%)
AO2 output activation (100%)
Load activated
C1 activation
C2 activation
Activation C3
End of self-test
Visualisation DL1
2 flashes every 2 sec
3 flashes every 2 sec
4 flashes every 2 sec
5 flashes every 2 sec
6 flashes every 2 sec
DL1 off
27