Error Codes - Ferroli OMNIA ST 3.2 Manuel D'installation, D'utilisation Et D'entretien

10.3 Error codes

When a safety device is activated, an error code(which does't include external failure) will be displayed on the user interface.A list of all errors and corrective actions
can be found in the table below. Reset the safety by turning the unit OFF and back ON. In case this procedure for resetting the safety is not successful, contact your
local dealer.
Error code Malfunction or protection
Water flow falut (after 3 times E8)
E0
Phase loss or neutral wire and live wire are
E1
connected reversely (only for three phase
unit)
Communication fault between controller and
hydronic board
E2
Fault of the final outlet water temp. probe
(T1)
E3
Fault of the Water boiler temp. probe (T5)t
E4
Fault of the condenser outlet refrigerant tem-
perature probe (T3)
E5
Fault of the outdoor air temperature probe
(T4)
E6
Fault of the buffer tank up temp. probe (Tbt1) 1.Check the resistance of the probe-
E7
Water flow failure
E8
Fault of the suction temperature probe (Th)
E9
Fault of the discharge temperature probe
(Tp)
EA
Fault of the solar temp. probe (Tsolar)
Eb
Fault of the buffer tank low temp. probe
(Tbt2)
Ec
Fault of the inlet water temp. probe (Tw_in)
Ed
EE
Hydronic board EEprom failure
124
EN
Failure causeand corrective action
1.The wire circuit is short connected or open. Reconnect the wire correctly.
2.Water flow rate is too low.
3. Water flow switch is failed, switch is open or close continuously, Replace the water flow switch.
1.Check the power supply cables should be connected stable,,avoid phase loss.
2.Check the phase sequence and if necessary connect reversely.
1.Wire of connession is broken or loose.
2.Communication wire sequence is not correct. Reconnect the wire in the right sequence.
3.Whether there is a high magnetic field or high power interfere, such as lifts, large power transformers, etc..
To add a barrier to protect the unit or to move the unit to the other place.
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
Check that all shut off valves of the water circuit are completely open.
1. Check if the water filter needs cleaning.
2. Make sure there is no air in the system (purge air).
3. Check the water pressure. The water pressure must be >1 bar.
4. Check that the pump speed setting is on the highest speed.
5. Make sure that the expansion vessel is not broken.
6. Check that the resistance in the water circuit is not too high for the pump
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
1.Check the resistance of the probe-
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water, dry the connector. Apply waterproof adhesive tape.
4.Probe broken, replace it.
The hydronic board is broken, replace it.
Cod. 3541V991 - Rev. 01 - 10/2021
OMNIA ST 3.2