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ENGLISH
10
4.4 Faults
BOILER STATUS
DISPLAY
TYPES OF ALARMS
Off status(OFF)
OFF
None
Stand-by
-
Signal
ACF alarm lockout module
A01
Definitive lockout
ACF electronics fault alarm
Limit thermostat alarm
A02
Definitive lockout
Tacho fan alarm
A03
Definitive lockout
Water pressure switch alarm
A04
Definitive lockout
NTC domestic water fault
A06
Signal
NTC heating outlet fault
A07
Temporary stop
Heating outlet probe over-temperature
Temporary then definitive
Outlet/return line probe differential alarm
Definitive lockout
NTC heating return line fault
A08
Temporary stop
Heating return line probe over-temperature
Temporary then definitive
Outlet/return line probe differential alarm
Definitive lockout
Cleaning the primary heat exchanger
A09
Signal
NTC flue gases fault
Temporary stop
Flue gases probe over-temperature
Temporary then definitive
Parasite flame
A11
Temporary stop
Low temperature system thermostat alarm
A77
Temporary stop
Temporary pending ignition
80°C flashing
Temporary stop
Water pressure switch intervention
flashing
Temporary stop
Calibration service
ADJ
Signal
Calibration installer
Chimney sweep
ACO
Signal
Vent cycle
Signal
Pre-heating enabled
P
Signal
Preheating heat request
P flashing
Signal
External probe presence
Signal
Domestic water heat request
60°C
Signal
Heating heat request
80°C
Signal
Antifreeze heat request
Signal
Flame present
Signal