key to return to the main display.
The symbol continues to be displayed on the control panel.
If the error is not resolved after one minute, the error code is
displayed on the control panel a second time.
Important
If the display of the error code persists, contact the accredited
assistance service.
Important
If the error code simultaneously displays the and symbols,
contact the accredited technical support service.
12.1.1 List of error codes
Tab.68 List of error codes
Display Description of the error
10 10:Outside sensor Outside temperature sensor.
20 20:Boiler sensor 1 Flow back sensor.
28 28:Flue gas temp sensor Flue gas sensor.
40 40:Return sensor 1 Return temperature sensor.
46 46:Return sensor cascade Cascade return temperature sensor error.
50 50:HW sensor 1 Domestic hot water sensor (only for heating only models with domestic hot
water tank).
52 52:HW sensor 2 Solar domestic hot water sensor (if incorporating a solar system).
60 60:Room sensor 1 Room temperature sensor 1 error.
65 65:Room sensor 2 Room temperature sensor 2 error.
68 68:Room sensor 3 Room temperature sensor 3 error.
78 78:Water pressure sensor Hydraulic pressure sensor error.
73 73:Collector sensor 1 Solar collector sensor (if incorporating a solar system).
83 83:BSB short-circuit Communication problem between boiler PCB and control unit. Probable
short circuit on the heating.
84 84:BSB address collision Address conflict between several control units (internal anomaly).
91 91:Data loss in EEPROM Loss of data in EEPROM.
98 98:Extension module 1 Extension module 1 error.
99 99:Extension module 2 Extension module 2 error.
100 100:2 clock time masters 2 master clocks
102 102:Clock without backup Master clock with no power reserve.
103 103:Communication failure Communication error.
109 109:Boiler temp supervision Air present in the boiler circuit (anomaly)
110 110:Lockout SLT Safety thermostat cut-off for overheating (pump blocked or air in the heat
ing circuit).
111 111:Shutdown limit thermost Safety thermostat cut-off for overheating.
117 117:Water pressure too high Pressure in hydraulic circuit too high.
118 118:Water pressure too low Pressure in hydraulic circuit too low.
125 125:Boiler temp too high Safety cut-off for absence of circulation (check made by a sensor).
Fig.195
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