Maintenance - Ferroli OMNIA S HYBRID C 3.2 Installation, Use & Maintenance Manual

Fault
Fault
code
F65 ÷
Combustion control spe-
F98
cific errors
A65 ÷
Combustion control spe-
A97
cific errors
Communication fault
F99
between the display and
control unit
Too many SW errors or
A98
error appeared for board
replacement
A99
Generic error
Flame combustion specific
F96
errors
A44
Multiple requests error
Parasitic flame signal after
A80
valve closure

13. MAINTENANCE

In order to ensure optimal availability of the unit, a number of checks and inspections on the unit and the field wiring have to be carried out at regular intervals.
IMPORTANT
HAZARD
All maintenance work and replacements must be carried out by skilled qualified personnel.
Before carrying out any operation inside the indoor unit, disconnect the power and close the gas cock upstream.
Otherwise there may be a danger of explosion, electric shock, suffocation or poisoning.
Do not touch the refrigerant circuit pipes and the internal parts (pump, safety valve, etc.) during and immediately after switching off the unit as they can be very hot or
very cold, causing sucking or burning or freezing. To avoid injury, allow sufficient time for the temperature of the pipes to drop to normal values and wear protective
gloves.
Before carrying out any maintenance or repair work, always disconnect the power supply to the unit and to all electrical loads (pumps, valves, electric heater for DHW
boiler and plant, etc.).
Some electrical components may be very hot.
Due to the risk of high residual voltage, after having disconnected the power supply to the outdoor unit, wait at least 10 minutes before touching live parts.
The compressor oil heater can work even if the compressor is stopped.
Make sure not to touch powered electrical cables.
Do not wash the unit. This may cause electric shocks or fire.
When the service panels are removed, live parts could easily be touched by mistake.
Never leave the unit unattended during installation or maintenance when the service panel has been removed.
It is not allowed to tamper with or modify any component, nor the settings of the intervention values of the protection devices installed in the unit.
Do not pull, disconnect, twist the electric cables coming from the unit even if disconnected from the power supply.
It is forbidden to leave containers of inflammable substances near the unit.
Do not touch the appliance with bare feet or with wet or moist parts of the body.
The checks described must be performed at least once a year by qualified personnel.
Electrical cabinet
Carry out a thorough visual inspection of the components of the electrical panel to check for damaged or incorrectly connected components or cables (check the tight-
ness of the terminal screws).
76
EN
Possible cause
Fumes pipe clogged. Low gas pressure. Conden-
sate siphon clogged. Combustion problem or fumes
recirculation
"Fumes pipe clogged. Low gas pressure (A78 -
A84). Condensate siphon clogged. Combustion
problem or fumes recirculation"
"Connection cable interrupted or not inserted"
"Parameters misaligned between control unit and
display"
Run a fault default reset
Replace the board
"Fumes pipe clogged.
Low gas pressure. Condensate siphon clogged.
Combustion problem or fumes recirculation."
Electronic board hardware or software error
Flame unstable or flame signal unstable after
ignition.
Repeated requests for short period
Electrode problem. Gas valve problem. Electronic
board problem.
Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
Remedy
"Check that the fumes pipes and condensate siphon are not clogged. Check
the correct pressure of the gas supply. Run the CO
mode. Run the calibration procedure [AUTO SETUP], if necessary."
"Check that the fumes pipes and condensate siphon are not clogged. Check
the correct pressure of the gas supply. Run the CO
mode. Run the calibration procedure [AUTO SETUP], if necessary."
Check the connection
Disconnect and reconnect the power supply
Disconnect and reconnect the power supply
"Reset the fault and proceed with the calibration procedure [AUTO SETUP]."
"Resolve the problem first, reset the fault and check correct ignition. Run the
calibration procedure [AUTO SETUP]. Replace the board, if necessary."
"Reset the fault and check correct ignition. Run the calibration procedure
[AUTO SETUP]. Replace the board, if necessary, of the problem persists."
"Check the gas supply, fumes and condensate drain pipes. Check the correct
position and status of the electrode. After about 3 minutes, the error is reset."
"Check if there are any pressure peaks in the DHW circuit. Change parameter
b11, if necessary."
"Check the correct position and status of the electrode.
Check the electronic board. Check the gas valve and replace it, if necessary."
adjustment in TEST
2
adjustment in TEST
2