Fronius Symo 3.0-3-S Serviceanleitung Seite 89

Code Description
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
459 Faulty isolation measure-
ment
460 Reference voltage outside
permitted limits
461 Defective data memory
462 Failure on the DC injection
monitoring detected
Behaviour
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
1. Occurs once
2. Isolation measuring defec-
tive
1. Occurs once
2. Measuring circuit on power
stage set defective
1. Defective power stage set
1. Occurs once
2. DC injection monitoring de-
fective
Remedy
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
1. Restart inverter
2. Change DC board. After-
wards if necessary AC board
1. Restart inverter
2. Change AC board
1. Change DC board. After-
wards if necessary AC board
1. Restart inverter
2. Change inverter
89