11
912.822.1 - GB
InstructIons pertaInInG to the user
(*) Auotoreset when fault disappears.
All the faults are displayed in order of importance; if several faults occur simultaneously, the first to be displayed
is the one with highest priority. After the cause of the first fault has been removed, the second one will be
displayed, and so on.
If any given fault occurs frequently, contact the authorised Service Centre.
3.9 table oF Faults and error Messages
Corrective action
Call an authorised service centre (*).
Call an authorised service centre (*).
Call an authorised service centre (*).
Press the reset key (for about 2 seconds: if this device is triggered repeatedly, call
the authorised service centre)
Call an authorised service centre.
Call an authorised service centre.
Call an authorised service centre to check the gas pressure.
Press the reset key (for about 2 seconds); if the fault persists, call the authorised
service centre to check polarity of ignition electrodes, ionisation current.
If
symbol is displayed, press the reset
button otherwise switch off the
electricity supply to the boiler for at least 10 seconds; if the fault persists, call the
authorised service centre.
Check the positioning of the ignition and flame sensing electrode (see section 16).
Press the key again (about 2 seconds)
Press and hold reset button (2 seconds approx.) then press again when warning
E153 appears
Call an authorised service centre.
Check that the system is at the rated pressure. (Refer to the section on filling the
system). If the fault persists, call the authorised service centre.
Description of fault
Outdoor temperature sensor fault
NTC output sensor failure
Hot water NTC sensor failure
Safety or flue gas thermostat tripped
Loss of flame during operation (the
ionization current has fallen below
the limit)
Minimum fan speed limit not reached
Gas pressure switch tripped / external
thermostat tripped
No flame detected
Boiler circuit board error
The reset key has been pressed
inappropriately
Internal error on boiler circuit module
Fan speed threshold not reached
Low water pressure
Error
code
E10
E20
E50
E110
E128
E129
E132
E133
E151
E153
E154
E160
E164