35
912.807.1 - GB
INSTALLATION AND OPERATING MANUAL
The LED’s on the electronic board display the operating status and any system blocks.
Key to LED’s:
LED
COLOUR
LED STATUS
OPERATING STATUS
DL1
RED
OFF
NO ALARMS
DL1
RED
FLASHING
1 FLASH EVERY 3S
EXTERNAL PROBE FAULTY
DL1
RED
FLASHING
'-"4)&4&7&3:4
DOMESTIC HOT WATER PROBE FAULTY
DL1
RED
FLASHING
'-"4)&4&7&3:4
HEATING PROBE FAULTY
DL1
RED
ON
ON/OFF VALVE NOT OPEN (Y1)
DL2
GREEN
OFF
NO POWER
DL2
GREEN
ON
ZONE I HEAT DEMAND (MIXED)
DL2
GREEN
FLASHING 0.5S
POWER ON (AMBIENT THERMOSTAT NOT OPEN)
DL2
GREEN
FLASHING 5S
POWER ON (AMBIENT THERMOSTAT OPEN)
DL3
GREEN
ON
ZONE II PUMP FEED (HIGH TEMPERATURE)
DL4
GREEN
ON
ZONE 1 PUMP FEED (MIXED)
DL5
GREEN
ON
ON/OFF VALVE SERVOMOTOR POWER INPUT
DL6
GREEN
ON
DHW RECIRCULATION PUMP
DL7 GREEN
ON
ZONE II VALVE OPEN (Y4)
DL8
RED
ON
THREE-WAY VALVE IN DHW MODE (Y3)
DL9
GREEN
ON
THREE-WAY VALVE IN HEATING MODE (Y3)
DL10
GREEN
ON
DOMESTIC HOT WATER DEMAND
DL11
GREEN
ON
ON/OFF VALVE OPEN (AT TRAVEL STOP)
DL12
RED
ON
SAFETY THERMOSTAT TRIPPED (*)
DL12
RED
FLASHING
AFTER SAFETY THERMOSTAT RESET (*)
DL13
GREEN
ON
ZONE II HEAT DEMAND
23. ELECTRONIC BOARD SIGNALS
(*) Safety thermostat tripping
If the safety thermostat trips due to a fault in the adjustment system, the user module stops for safety reasons and the
red LED DL12
shines on the electronic board.
After checking the reason for the overheating, restart the system by pressing the safety thermostat reset device and mo-
mentarily disconnecting the power supply from the module (this operation is required in order to cancel the block from the
board memory: the
red LED DL12 flashes
).
In case this device trips repeatedly, contact the technical assistance service.
