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OMNIA S HYBRID H 3.2
12.4 Boiler fault codes
The screen displays the fault id code in the event of faults or malfunctions.
There are faults which cause permanent blocks (marked with the letter "A"): to reset operation, just press the
or with RESET on the remote timer control (optional), if installed. If the boiler does not restart, the fault must be resolved.
Other faults cause temporary blocks (marked with the letter "F") which are automatically reset as soon as the value returns to the normal operation range of the boiler.
Fault
Fault
code
A01
The burner does not ignite
Flame signal present with
A02
burner off
F05
Fan fault
No flame after ignition
A06
phase
F15 -
High fumes temperature
A07
Overtemperature protec-
A08
tion triggered
Exchanger protection
A09
triggered
Possible cause
No gas
Detection/ignition electrode fault
Insufficient mains gas supply pressure
Siphon clogged
Air/fume pipes clogged
Incorrect calibration
Faulty gas valve
Electrode fault
Board fault
No 230V power
Tachometric signal interrupted
Fan damaged
Ionisation electrode fault
Flame unstable
air/fume pipes clogged
Siphon clogged
Incorrect calibration
Insufficient mains gas supply pressure
The fumes probe detects an excessive temperature
Sensor not correctly positioned on the delivery pipe
or damaged
"No water circulation in the system"
Air in the system
"No water circulation in the system"
"Poor circulation and abnormal increase in the
delivery probe temperature"
exchanger clogged
Cod. 3542B230 - Rev. 00 - 02/2022
button for 5 seconds and confirm with the
Remedy
"Check that the gas flow to the boiler is normal and that the air has been
eliminated from the pipes"
"Check the electrode wiring and make sure it is correctly positioned and free
of any deposits. Replace the electrode, if necessary."
Check the mains gas supply pressure
Check and clean the siphon, if necessary
"Unclog the flue, fumes exhaust pipes, air inlet and terminals."
"Run the calibration procedure [AUTO SETUP]."
"Check and replace the gas valve, if necessary"
"Check the ionisation electrode wiring"
Check the electrode for damage
Electrode grounded
Cable grounded
Check and clean the siphon, if necessary
Check the board
Check the wiring of the 5-pole connector
"Check the fan and replace it, if necessary"
"Check the position of the ionisation electrode, remove any deposits and run
the calibration procedure [AUTO SETUP]. Replace the electrode, if neces-
sary."
Check the burner
"Unclog the flue, fumes exhaust pipes, air inlet and terminals"
Check and clean the siphon, if necessary
"Run the calibration procedure [AUTO SETUP]."
Check the mains gas supply pressure
Check the exchanger
Check the fumes probe
Check the flue material parameter
"Check the correct position and operation of the heating sensor and replace it,
if necessary"
Check the circulator
Bleed the system
"Check the circulator and heating system"
Bleed the system
check the exchanger and system
button
77
EN
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