Class 2 Service Codes; Class 3 Service Codes - Fronius Primo serie Serviceanleitung, Ersatzteilliste

Code Description
112 RCMU fault
Class 2 Service
Codes
Code Description
240 AFCI trigger
241–242 AFCI trigger
245 AFCI self-test error
247 AFCI current sensor fault
Class 3 Service Class 3 comprises status codes that may appear during feed-in operation and that do not
Codes cause a permanent interruption of the operation of feeding energy into the grid.
After automatic disconnection from the grid and waiting for its conditions to return to those
stipulated, your inverter will try to resume feed-in operation.
Code Description
301 Current peak found on grid
302 Current peak found on PV
generator
Behavior
1. Old filter PC board software
(<4.6)
2. Permanent ground fault
Behavior
No error – AFCI triggered. Er-
ror visible for 4 seconds, then
241
AFCI triggered. To continue
the process, press Enter 2x
(first 242, then process is con-
tinued)
1. Self-test running defective
during fault detection
1. Data reconciliation of prima-
ry/secondary current sensor
failed
Behavior
1. Voltage drop in public grid
2. Grid impedance outside of
permissible values
3. Bad contact: wall bracket <-
-> inverter
4. Measurement error on filter
PC board
5. Incorrect capacity on device
1. Bad contact: wall bracket <-
-> inverter
2. Voltage drop in public grid
3. Measurement error on pow-
er module
Remedy
1. Software update
2. Check AC/DC connections
Remedy
Automatic correction
Check PV generator
1. Restart inverter or update
software
2. Replace filter PC board
1. Restart inverter or update
software
2. Replace filter PC board
Remedy
1. Automatic correction
2. Contact energy provider
3. Check fixing screws in DAT-
COM area
4. Replace filter PC board
5. Replace AC power module
1. Check fixing screws in DAT-
COM area
2. Automatic correction
3. Replace AC PC board Oth-
erwise replace DC PC board
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