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Display | Fault |
spark' and 'F' and 'flashing red LED' | Ignition fault (lockout) caused by no gas, no detection |
'fan' and 'F' and 'flashing red led' | Air fault, pressure switch, no power to fan |
'05' and 'phone' and 'F' and 'flashing red LED' | Overheat fault |
'06' and 'phone' and 'F' and 'flashing red LED' | Central heating flow NTC fault |
'08' and 'phone' and 'F' and 'flashing red LED' | Micro accumulation vessel NTC fault |
'09' and 'phone' and 'F' and 'flashing red LED' | Water pressure sensor fault |
'11' and 'phone' and 'F' and 'flashing red LED' | No reception by the main board (MMI Lead) |
'12' and 'phone' and 'F' and 'flashing red LED' | User interface or distant control panel fault |
'13' and 'phone' and 'F' and 'flashing red LED' | Main board fault |
'14' and 'phone' and 'flashing red LED' | Over temperature on primary water circuit |
'15' and 'phone' and 'F' and 'flashing red LED' | Stepper motor fault (gas valve) |
'16' and 'phone' and 'F' and 'flashing red LED' | Gas safety value failure |
'17' and 'phone' and 'F' and 'flashing red LED' | Power supply <170V |
'18' and 'phone' and 'F' and 'flashing red LED' | Local user interface fault |
'19' and 'phone' and 'F' and 'flashing red LED' | Central heating NTC not connected to pipe |
'20' and 'phone' and 'F' and 'flashing red LED' | User interface not compatible with boiler |
'0.5bar' flashing and 'F' and 'flashing red LED' | Lack of water fault (<0.5b) |
'2.7bar' flashing and 'F' and 'flashing red LED' | Upper water pressure (>2.7b) |