Class 5-6 Service Codes - Fronius Primo 3.0-1 Service Manual

Code Description
472 Faulty fuse for solar module
ground
474 RCMU sensor fault
475 Insulation fault detected
476 No internal power supply
480 Power stage set software
and display software are in-
compatible
481 Recerbo has an old soft-
ware version
482 Inverter switched off during
start-up
483 Set DC2 fixed voltage is
outside the permitted MPP
range
484 - 485 Error during data transfer
Class 5-6 service Class 5 - 6 status codes do not generally interfere with feeding energy into the grid, but can
codes cause restrictions. These status codes are displayed until they are acknowledged by
pressing a key (however, the inverter continues to operate normally in the background).
98
Behaviour
1. Faulty fuse for solar module
ground
2. Incorrect setting in Basic
Service menu
1. Rapidly changing insolation
conditions
2. Faulty sensor
1. Incorrect setting
2. Grounding fault on PV gen-
erator
3. Faulty power stage set
measuring circuit
1. Grid voltage too low
2. Grid test time too short
3. Inadequate internal power
supply
4. Inadequate internal power
supply
1. Old power stage set/display
software
2. Old software
3. Incompatible hardware com-
bination
1. Old Recerbo software
2. Old software
3. Incompatible hardware com-
bination
1. Start-up process was unsuc-
cessful
1. Incorrectly set fixed voltage
1. Communication problem
caused by temporary environ-
mental interference (grid,
EMC, etc.)
2. Check ribbon cable between
filter PC board and power
stage set
3. Faulty AC guard on filter PC
board
4. Faulty AC guard on power
stage set
Remedy
1. Replace fuse
2. Set DC mode to "floating"
1. Automatic correction
2. Replace filter PC board
1. Check ISO / GFDI setting
2. Check PV generator
3. Replace DC PC board; re-
place AC PC board if neces-
sary
1. Check wiring
2. Power failure
3. Replace AC PC board
4. Replace filter PC board
1. Software update
2. Reload setup
3. Check hardware compo-
nents
1. Software update
2. Reload setup
3. Check hardware compo-
nents
1. Restart the inverter
1. Check the settings
1. Automatic correction
2. Replace ribbon cable
3. Replace filter PC board
4. Replace AC PC board