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910.001.1 - EN
ISTRUCTIONS 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 TABLE OF FAULTS AND ERROR MESSAGES
Error
code
Description of fault
Corrective action
E10
Outdoor temperature sensor fault
Call an authorised service centre.
E20
ntc output sensor failure
Call an authorised service centre.
E40
NTC return heating probe faulty
call the authorised service centre
E50
domestic hot water ntc sensor failure
Call an 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 an 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
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).
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 an authorised service centre.
E164
no hydraulic differential 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.
