
6
3.6
ERROR MESSAGES AND RESETTING THE BOILER
ERROR DESCRIPTION
OPERATION
09
Gas valve connection fault.
Call an authorized SERVICE technician
10
Outdoor sensor fault .
Call an authorized SERVICE technician
15
Gas valve error.
Call authorized SERVICE technician
20
Central Heating NTC sensor fault.
Call authorized SERVICE technician
28-29
Flue NTC heat exchanger sensor fault
Call authorized SERVICE technician
40
Return NTC sensor fault.
Call authorized SERVICE technician
50
Domestic Hot Water NTC sensor fault
(only for heating-only model with storage boiler).
Call authorized SERVICE technician
53
Obstruction in flue pipe.
Turn boiler off for a few seconds
If this fault persists, call authorized SERVICE technician
55
PCB not programmed.
Call authorized SERVICE technician
83-84-
85
86-87
Communication problem between boiler board and
control unit. Probable short circuit on wiring.
Call authorized SERVICE technician
98
Internal error.
Call authorized SERVICE technician
109
Precirculation alarm (temporary fault).
Call authorized SERVICE technician
110
Safety thermostat tripped due to over temperature
(probable blocked pump or air in heating circuit).
Press RESET (R) button for at least 2 seconds
If this fault persists, call authorized SERVICE technician
118
Hydraulic pressure too low.
Call authorized SERVICE technician
125
No circulation safety trip
(control performed via temperature sensor).
Press RESET (R) button for at least 2 seconds
If this fault persists, call authorized SERVICE technician
128
Loss of flame.
Press RESET (R) button for at least 2 seconds
If this fault persists, call authorized SERVICE technician
130 - 131
Flue NTC sensor tripped due to over temperature.
Call authorized SERVICE technician
133
Ignition failure (5 attempts).
Press RESET (R) button for at least 2 seconds
If this fault persists, call authorized SERVICE technician
134
Gas supply valve blocked.
Press RESET (R) button for at least 2 seconds
If this fault persists, call authorized SERVICE technician
135
Internal error.
Call authorized SERVICE technician
160
Fan fault.
Call authorized SERVICE technician
162
Flue pressure switch (contact open)
Call authorized SERVICE technician
317
Incorrect power supply frequency.
Incorrect power supply frequency.
321
NTC domestic hot water sensor faulty.
Call authorized SERVICE technician
384
Fault flame (parasitic flame).
Press RESET (R) button for at least 2 seconds
If this fault persists, call authorized SERVICE technician
385
Input voltage too low.
Call authorized SERVICE technician
To RESET boiler: press the button (
) for at least 2 seconds
3 - CONTROL
PN 240012896 Rev. A [01/31/2020]