Unical ALKON 24 B 60 - Page 41

41
Codes fault
CODE DISPLAYED ON
THE DIGITAL ROOM
CONTROLLER
0909
0909
09
Frost
Description:
The heat exchanger is frozen. If the heating sensor detects a
temperature below 2°C burner ignition remains blocked until
the sensor detects a temperature above 5°C.
CODE DISPLAYED ON
THE DIGITAL ROOM
CONTROLLER
11
11
1
00
00
0
High Limit thermostat
Description:
A temperature of >100 is detected at the heat
exchanger.
The boiler can refired by pressing the reset key (if
the limit thermostat is closed)
CODE DISPLAYED ON
THE DIGITAL ROOM
CONTROLLER
11
11
1
33
33
3
CH temperature sensor
Description:
Interruption or short circuit of the CH sensor.
CODE DISPLAYED ON
THE DIGITAL ROOM
CONTROLLER
11
11
1
44
44
4
DHW temperature sensor
Description:
Interruption or short circuit of the DHW sensor.
CODE DISPLAYED ON
THE DIGITAL ROOM
CONTROLLER
1111
1111
11
Factory parameters
Description:
Alteration of the factory parameters caused by electromagnetic
disturbances.
Restore the parameters via the remote control.
CODE DISPLAYED ON
THE DIGITAL ROOM
CONTROLLER
11
11
1
99
99
9
Incorrect flame detection
Description:
Flame detection with burner Off.
CODE DISPLAYED ON
THE DIGITAL ROOM
CONTROLLER
11
11
1
22
22
2
Internal fault
Description:
Internal fault within the modulation board.
3° GRUPPO
CODE DISPLAYED ON
THE DIGITAL ROOM
CONTROLLER
0808
0808
08
Lack of water
Description:
Insufficient water pressure and subsequent intervention of the
minimum water pressure switch.