Error Messages And Resetting The Boiler; Error Description - UTICA BOILERS MAC-205 User's Information Manual

3.6 ERROR MESSAGES AND RESETTING THE BOILER

09 Gas valve connection fault.
10 Outdoor sensor fault .
15
Gas valve error.
20
Central Heating NTC sensor fault.
28-29 Flue NTC heat exchanger sensor fault
40 Return NTC sensor fault.
Domestic Hot Water NTC sensor fault
50
(only for heating-only model with storage boiler).
53
Obstruction in flue pipe.
55 PCB not programmed.
83-84-
Communication problem between boiler board and
85
control unit. Probable short circuit on wiring.
86-87
98
Internal error.
109
Pre-circulation alarm (temporary fault).
Safety thermostat tripped due to over temperature
110
(probable blocked pump or air in heating circuit).
118 Hydraulic pressure too low.
No circulation safety trip
125
(control performed via temperature sensor).
128
Loss of flame.
130 - 131
Flue NTC sensor tripped due to over temperature.
133 Ignition failure (5 attempts).
134 Gas supply valve blocked.
135 Internal error.
160 Fan fault.
162 Flue pressure switch (contact open)
317
Incorrect power supply frequency.
321
NTC domestic hot water sensor faulty.
384 Fault flame (parasitic flame).
385
Input voltage too low.
To RESET boiler: press the button (

ERROR DESCRIPTION

) for at least 2 seconds
3 - CONTROL
Call an authorized SERVICE technician
Call an authorized SERVICE technician
Call authorized SERVICE technician
Call authorized SERVICE technician
Call authorized SERVICE technician
Call authorized SERVICE technician
Call authorized SERVICE technician
Turn boiler off for a few seconds
If this fault persists, call authorized SERVICE technician
Call authorized SERVICE technician
Call authorized SERVICE technician
Call authorized SERVICE technician
Call authorized SERVICE technician
Press RESET (R) button for at least 2 seconds
If this fault persists, call authorized SERVICE technician
Call authorized SERVICE technician
Press RESET (R) button for at least 2 seconds
If this fault persists, call authorized SERVICE technician
Press RESET (R) button for at least 2 seconds
If this fault persists, call authorized SERVICE technician
Call authorized SERVICE technician
Press RESET (R) button for at least 2 seconds
If this fault persists, call authorized SERVICE technician
Press RESET (R) button for at least 2 seconds
If this fault persists, call authorized SERVICE technician
Call authorized SERVICE technician
Call authorized SERVICE technician
Call authorized SERVICE technician
Incorrect power supply frequency.
Call authorized SERVICE technician
Press RESET (R) button for at least 2 seconds
If this fault persists, call authorized SERVICE technician
Call authorized SERVICE technician
6
OPERATION
P/N 240011945 Rev. A [01/01/18]