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10.3 Error codes
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)
E1
IU
permissible level or phase connections inverted
Communications error between user interface 1.The connection cable has been interrupted.
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
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
EN
124
Cause of fault and corrective action
-
2.The water flow is too low.
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.
tape.
1.Check the probe resistance.
2.The probe connector is disconnected. Reconnect it.
tape.
Check the probe resistance.
2.The probe connector is disconnected. Reconnect it.
tape.
Check the probe resistance.
2.The probe connector is disconnected. Reconnect it.
tape.
1.Check the probe resistance.
2.The probe connector is disconnected. Reconnect it.
tape.
1. Check if the water filter need cleaning.
3. Check the water pressure. The water pressure must be > 1 bar.
4. Check that the pump speed setting is on the maximum speed.
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.
tape.
Check the probe resistance.
2.The probe connector is disconnected. Reconnect it.
tape.
1.Check the probe resistance.
2.The probe connector is disconnected. Reconnect it.
tape.
Cod. 354M000010 - Rev. 03 - 06/2023
OMNIA SW-T 3.2
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