Fronius Ohmpilot - Status Codes and Error Resolution

Status Codes
Status codes Sending errors
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Errors are saved in Fronius Datamanager 2.0 and can be sent via Fronius Sol-
ar.web.
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Possible error outputs:
Status codes
HE = Heating element TS = Temperature sensor I = Inverter ES = External
source (e.g. gas-fired heating)
Code Description Cause Remedy
906 Heating element 1
faulty - short cir-
cuit L1
The load on L1 is higher than
3 kW. Short circuit on L1.
Check heating
element 1. Check
wiring.
907
908
HE 1 - Overload
on L2
HE 1 - Overload
on L3
Current on L2 greater than
16 A
Current on L3 greater than
16 A
Check HE 1 and
replace if neces-
sary.
909
910
911
HE 1 faulty - L1
highly resistive
HE 1 faulty - L2
highly resistive
HE 1 faulty - L3
highly resistive
No current is flowing through
L1/L2/L3. L1/L2/L3 of HE 1
faulty. Phase L1/L2/L3 inter-
rupted.
Check L1/L2/L3.
Check L1/L2/L3
connections.
912 HE 2 faulty - short
circuit L1
The load on L1 is higher than
3 kW. Short circuit on L1.
Check HE 2.
Check wiring.
913
914
HE 2 - Overload
on L2
HE 2 - Overload
on L3
Current on L2 greater than
16 A
Current on L3 greater than
16 A
Check HE2 and
replace if neces-
sary.
915
916
917
HE 2 faulty - L1
highly resistive
HE 2 faulty - L2
highly resistive
HE 2 faulty - L3
highly resistive
No current is flowing through
L1/L2/L3. L1/L2/L3 of HE 2
faulty. Phase L1/L2/L3 inter-
rupted.
Check L1/L2/L3.
Check L1/L2/L3
connections.
918
919
Relay 2 (phase L2)
defective
Relay 3 (phase L3)
defective
Relay R2/R3 does not switch. Replace Ohmpi-
lot.
920 TS short circuit TS input resistance less than
200 Ohm. No PT1000 TS
connected. TS defective.
Check cable and
connections on
TS cable. Replace
TS.
921 TS not connected
or faulty
No TS connected (input res-
istance greater than 2000
Ohm). TS is activated (should
be deactivated). TS cable de-
fective. TS defective. No
PT1000 TS connected.
Connect TS to
device. Deactivate
TS via the user in-
terface (if sensor
not needed).
Check TS cable.
Replace TS.
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