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 ue pipe.
Turn boiler o 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 ame.
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 ame (parasitic ame).
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 240012894 Rev. A [04/15/2020]
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