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926.772.1 - GB/IE
INSTRUCTIONS PERTAINING TO THE USER
All the faults are displayed in order of importance; if several faults occur simultaneously, the first to be displa-
yed 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 FAULT WARNINGS TABLE
Fault code
Fault description
action required
E10
outdoor temperature probe sensor failure
call the authorised service centre.
E20
ntc output sensor failure
call the authorised service centre
E40
NTC return heating probe faulty
call the authorised service centre
E50
domestic hot water ntc sensor failure
call the authorised service centre
E110
Safety or fumes thermostat or heating return
temperature probe tripped
press the reset key (for about 2 seconds: if this device is triggered
repeatedly, call the authorised service centre)
E111
Delivery temperature higher than 95°C
If this fault persists, call the authorised service centre
E128
Loss of flame during operation (the ionization current
has fallen below the limit)
Call an authorised service centre.
E129
Minimum fan speed limit is hurt
Call an authorised service centre.
E132
floor thermostat tripped
call the authorised service centre
E133
no gas
press the reset key (for about 2 seconds); if the fault persists,
call the authorised service centre)
E151
boiler circuit board error
Press the reset button if the display presents the ( ) symbol,
otherwise switch off the boiler at the mains and switch it on again
after 10 seconds. If the fault persists, call an authorised service
centre. Check the position of the ignition electrodes (chapter 17).
E153
the reset key has been pressed inappropriately
press the key again (about 2 seconds)
E154
No circulation or reverse flow
call the authorised service centre
E160
fan speed threshold not reached
call the authorised service centre.
E164
no hydraulic pressure switch enabling signal
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.