Class 5-6 Service Codes - Fronius Primo serie Serviceanleitung, Ersatzteilliste

Class 5–6 Service Class 5–6 status codes generally do not impair grid power feed operation, but can lead to
Codes limitations. They will be displayed until the status code is acknowledged by pressing a key
(the inverter, however, continues working normally in the background).
Code Description
502 An insulation fault was de-
tected between DC+/DC-
and the ground
509 No grid power feed opera-
tion over 24 hours
515 EEPROM communication
failed
516 Communication error in
power module
517 Power module derating
caused by excessive tem-
perature
518 Internal DSP malfunction
519 Communication error in fil-
ter PC board
520 No infeed on DC1 within 24
hours
521 No infeed on DC2 within 24
hours
Behavior
1. Insulation fault in PV gener-
ator
1. Modules covered by snow or
very dirty
2. For grid power feed opera-
tion of modules
1. Occurs once
2. Filter calibration value incor-
rect
1. Occurs once
2. Power module faulty
1. Ventilation opening blocked
2. Ambient temperature too
high
3. Disconnected fan cable
4. Fan faulty
5. Bad contact: power module
<--> heat sink
6. Filter PC board faulty
7. Recerbo faulty
8. Measurement error on pow-
er module
1. Occurs once
2. Filter PC board faulty
1. Modules covered by snow or
very dirty
2. For grid power feed opera-
tion of modules
3. Input not used
1. Modules covered by snow or
very dirty
2. For grid power feed opera-
tion of modules
3. Input not used
Remedy
1. Check cable and PV gener-
ator
1. Clean modules or remove
snow
2. Check other service codes
1. Restart inverter
2. Replace AC PC board and
then, if necessary, DC PC
board
1. Restart inverter
2. Replace power module
1. Clean ventilation openings
2. Change setup location
3. Connect fan cable
4. Replace fans
5. Check phase change paste
6. Replace filter PC board
7. Recerbo faulty
8. Replace power module
1. Restart inverter
2. Replace filter PC board
1. Clean modules or remove
snow
2. Check other service codes
3. Set inverter as mono-string
1. Clean modules or remove
snow
2. Check other service codes
3. Set inverter as mono-string
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