Error Codes - Ferroli OMNIA S 3.2 Installations- Und Bedienungsanleitung

10.3 Error codes

When a safety device is activated, an error code is displayed on the user interface (which does not include an external fault). The table below shows a list of all the
errors and corrective actions. Reset the safety device by turning the unit OFF and back ON. If this procedure to reset the safety device is not successful, contact
your local dealer.
Unit Malfunction or protection
Error code
in error
C7
Inverter mode temperature too high
UE
Insufficient water flow (after 3 interventions er-
E0
IU
ror E8)
No phase or neutral or power supply below the
E1
IU
permissible level or phase connections inverted
(for three-phase unit only)
Communications error between user interface
and hydronic board
E2
IU
Final water outlet temperature probe fault (T1) 1.Check the probe resistance.
E3
IU
DHW heater temperature probe fault (T5)
E4
IU
Temperature probe fault. Refrigerant leaking
from coil (T3)
E5
UE
External air temperature probe fault (T4)
E6
UE
System tank temp. probe fault (Tbt1)
E7
IU
No water flow
E8
IU
Compressor extraction temperature probe fault
(Th)
E9
UE
Compressor drainage temperature probe fault
(Tp)
EA
UE
Solar temperature probe fault (Tsolar)
Eb
IU
124
EN
Cause of fault and corrective action
-
1.The wiring is incorrect (short-circuited or open). Reconnect the wire correctly.
2.The water flow is too low.
3. The water flow switch is faulty. Replace the water flow switch.
1.Check that the power supply cables are securely fastened.
2.Check the phase sequence and invert it, if necessary
1.The connection cable has been interrupted.
2.The communication cable sequence is incorrect. Reconnect the cable in the correct sequence.
3.If there is a strong magnetic filed or high power interference, like lifts, large power transformers, etc.
Add a barrier to protect the unit or move the unit elsewhere.
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water and dry the connector. Apply waterproof adhesive
tape.
4.Faulty probe; replace it.
1.Check the probe resistance.
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water and dry the connector. Apply waterproof adhesive
tape.
4.Faulty probe; replace it.
Check the probe resistance.
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water and dry the connector. Apply waterproof adhesive
tape.
4.Faulty probe; replace it.
Check the probe resistance.
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water and dry the connector. Apply waterproof adhesive
tape.
4.Faulty probe; replace it.
1.Check the probe resistance.
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water and dry the connector. Apply waterproof adhesive
tape.
4.Faulty probe; replace it.
Make sure that all the shut-off valves in the hydraulic circuit are completely open.
1. Check if the water filter need cleaning.
2. Make sure there is no air in the system (bleed the air).
3. Check the water pressure. The water pressure must be > 1 bar.
4. Check that the pump speed setting is on the maximum speed.
5. Make sure that the expansion vessel is not broken or empty.
6. Check that the resistance in the water circuit is not too high for the pump.
.
Check the probe resistance.
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water and dry the connector. Apply waterproof adhesive
tape.
4.Faulty probe; replace it.
Check the probe resistance.
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water and dry the connector. Apply waterproof adhesive
tape.
4.Faulty probe; replace it.
1.Check the probe resistance.
2.The probe connector is disconnected. Reconnect it.
3.The probe connector is wet. Remove the water and dry the connector. Apply waterproof adhesive
tape.
4.Faulty probe; replace it.
Cod. 3541V941 - Rev. 04 - 05/2022
OMNIA S 3.2