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Part number 550-142-850/0115
81
FreeStyle
™
W
ALL
M
OUNT
GAS
-
FIRED
WATER
BOILER
—
Boiler Manual
32
Troubleshooting
(continued)
Fault
Code Fault
Condition
Correction
A01
No burner ignition
No gas
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that the air has been eliminated from the pipes
Ignition/detection electrode fault
Check the wiring of the electrode and that it is
correctly positioned and free of any deposits
Faulty gas valve
Check the gas valve and replace it if neces-
sary
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Check the gas supply pressure
Trap blocked
Check the trap and clean it if necessary
A02
Flame present signal
with burner off
Electrode fault
Check the ignitor electrode wiring
Card fault
Check the card
A03
Over temperature pro-
tection activation
Heating sensor damaged
Check the correct positioning and operation of
the heating sensor
No water circulation in the system
Check the circulating pump
Air in the system
Vent the system
A04
Exhaust duct safety
device activation
Fault F07 generated 3 times in the last
24 hours
See fault F07
A05
Fan protection activated
Fault F15 generated for 1 hour (con-
secutive)
See fault F15
A06
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-
tion stage (6 times in 4
minutes)
Ignitor electrode fault
Check the position of the ignitor electrode and
replace it if necessary
Flame unstable
Check the burner
Gas valve Offset fault
Check the Offset adjustment at minimum
power
Air/fume ducts obstructed
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ducts and air inlet and terminals
Trap blocked
Check the trap and clean it if necessary
F07
High exhaust tempera-
ture
The exhaust probe detects an excessive
temperature
Check the exchanger
F10
Supply sensor 1 fault
Sensor damaged
Check the wiring or replace the sensor
Wiring shorted
Wiring disconnected
F11
Return sensor fault
Sensor damaged
Check the wiring or replace the sensor
Wiring shorted
Wiring disconnected
F12
DHW sensor fault
Sensor damaged
Check the wiring or replace the sensor
Wiring shorted
Wiring disconnected
F13
Exhaust probe fault
Probe damaged
Check the wiring or replace the exhaust probe
Wiring shorted
Wiring disconnected
Figure 106
4ROUBLESHOOTINGSUGGESTIONSFOR
FreeStyle
™
BOILERS
&AULTDISPLAYSANDDIAGNOSTICS
(continued)