Bardiani Valvole GIOTTO TOP Instruction, Use And Maintenance Manual page 21

7 Troubleshooting
PROBLEM
LED terminal block with red light
AS-i card with flashing red/green
light
AS-i card with red light
EN-IST-GIOT360-1021
POSSIBLE CAUSE
Valve open sensor reading
simultaneously with another sensor
Circuit board damaged
Sensor damaged
+ 24Vdc presence on OPEN and/or
CLOSED terminals
AS-i card damaged
Valve open sensor reading
simultaneously with another sensor
Communication error
POSSIBLE SOLUTION
Check the position of the sensors
Replace the circuit board
Replace the sensor
Check the electrical connections
between the control unit and the
electrical panel
Replace the AS-i card
Check the position of the sensors
and adjust if necessary
Check the sensors are working
properly and replace if necessary
Check the address of the AS-i card
and reprogram it if necessary.
Check the AS-i network is working
properly.
Replace the AS-i card
21