78
EN
Cod. 3542B230 - Rev. 00 - 02/2022
OMNIA S HYBRID H 3.2
Fault
code
Fault
Possible cause
Remedy
F09
Overtemperature protec-
tion triggered
Delivery sensor damaged
“Check the correct position and operation of the delivery sensor and replace
it, if necessary”
“No water circulation in the system”
“Check the circulator and heating system”
Air in the system
Bleed the system
F10
Delivery sensor fault
Sensor damaged
Check the wiring or replace the sensor
Wiring short-circuited
Wiring interrupted
F11
Return sensor fault
Sensor damaged
Check the wiring or replace the sensor
Wiring short-circuited
Wiring interrupted
A11
Gas valve connection
“Damage to the electrical connection between the
control unit and gas valve”
check the wiring or replace the valve
F12
DHW sensor fault
Sensor damaged
Check the wiring or replace the sensor
Wiring short-circuited
Wiring interrupted
F13
Fumes probe fault
Probe damaged
Check the wiring or replace the fumes probe
Wiring short-circuited
Wiring interrupted
A14
“Fumes evacuation pope
safety device triggered”
“A07 fault generated 3 times in the last 24 hour”
See fault A07
F34
“Supply voltage lower than
180V”
Problems with the mains electricity
Check the electrical system
F35
“Power supply frequency
incorrect”
Problems with the mains electricity
Check the electrical system
A23-
A24-
A26-F20
F21-
F40-
F47-F51
Pressure sensor fault
“Parameter configured incorrectly”
“Check if parameter b04 is configure correctly”
“System pressure problems (transducer)”
System pressure value outside the set limits (transducer)
b06 set to 3
F37
System water pressure
incorrect
Pressure too low
Load the system
Pressure transducer not connected or damaged
Check the pressure transducer
F39
External probe fault
Probe damaged or wiring short-circuited
Check the wiring or replace the sensor
“Probe disconnected after activating sliding tem-
perature”
Reconnect the external probe or disable the sliding temperature”
F19
Board parameter fault
“Incorrect setting of board parameter”
“Check and change parameter b15 to 3, if necessary”
F50 -
F53
Thermostat limit fault with
parameter b06 = 1 or 4
“No/poor water circulation in the system”
“Check the circulator and heating system”
Air in the system
Bleed the system
Incorrect parameter
Check the correct parameter setting
F64
Maximum number of con-
secutive resets exceeded Maximum number of consecutive resets exceeded
“Disconnect the power supply to the boiler for 60 seconds and then, reset the
boiler”
F62
Calibration request
“New board or boiler not yet calibrated”
“Run the calibration procedure [AUTO SETUP].”
A88
Combustion control or gas
valve specific errors
“Calibration activated with burner lit.
Combustion problem, gas valve or electronic board
faulty”
“Reset the fault and run the calibration procedure [AUTO SETUP]”. Replace
the gas valve or the electronic board, if necessary.”
