Fronius Symo 10.0-3-M Serviceanleitung, Ersatzteilliste Seite 111

Code Description
447 Isolation failure detected
448 Neutral wire fault
451 Flash of the guard defective
452 Communication between
filter & power stage set
faulty
453 Processor guard detected a
faulty grid voltage
454 Processor guard detected a
faulty grid frequency
456 Error in the Anti Islanding
monitoring detected
457 Grid relais do not release
458 RCMU selftest failed
Behaviour
1. PV generator grounded
2. PV generator grounding er-
ror
3. Measuring circuit on power
stack defect
1. No neutral wire detected
2. Wrong setup
3. Bad contact: wall bracket <-
> inverter
4. Filter board defective
1. Grid problem
2. Defective AC guard on filter
board
3. Defective AC guard on pow-
er stage set
1. Communication problem
caused by temporary environ-
mental disturbances (grid,
EMC, ...)
2. Ribbon cable between filter
board and power stage set de-
fective
3. Defective AC guard on filter
board
4. Defective AC guard on pow-
er stage set
1. Measuring error
2. Grid problem
3. Defective AC guard on filter
board
4. Defective AC guard on pow-
er stage set
1. Measuring error
2. Grid problem
3. Defective AC guard on filter
board
4. Defective AC guard on pow-
er stage set
1. Occurs once
2. Software problem
3. Measuring on filter board
4. Measuring circuit for Anti Is-
landing defective
1. Occurs once
2. Grid test time is too low
3. Relay got stuck
1. RCMU measurement defect
Remedy
1. Use only ungrounded mod-
ules
2. Check PV generator
3. Change DC board. After-
wards if necessary AC board
1. Check wiring
2. Check country setup
3. Check AC wall bracket
screws
4. Change filter board
1. Automatically corrected
2. Change filter board
3. Change AC board
1. Automatically corrected
2. Change ribbon cable
3. Change filter board
4. Change AC board
1. Software update
2. Automatically corrected
3. Change filter board
4. Change AC board
1. Software update
2. Automatically corrected
3. Change filter board
4. Change AC board
1. Restart inverter
2. Software update
3. Change filter board
4. Change AC board
1. Restart inverter
2. Change settings
3. Change AC board
1. Change filter board
111