Class 3 Service Codes - Fronius Primo 4.5-1 Serviceanleitung

Code Description
108 Stand-alone operation de-
tected
Class 3 service Class 3 includes status codes that may occur while feeding energy into the grid, but gen-
codes erally do not cause the process to be interrupted for any length of time.
The inverter disconnects automatically from the grid, the grid is then monitored as specified
and the inverter attempts to resume feeding energy into the grid.
Code Description
301 Current peaks detected in
grid
302 Current peaks detected in
PV generator
303 Heat sink temperature too
high
Behaviour
1. Stand-alone operation de-
tected
2. Serious fault in public grid
3. Poor contact: wall bracket <-
-> filter PC board
4. Grid impedance is outside
permissible range
5. Poor AC connection
6. Ripple control signals
7. Measurement fault on filter
PC board
Behaviour
1. Voltage drop in the public
grid
2. Grid impedance is outside
the permissible values
3. Poor contact: wall bracket <-
-> inverter
4. Measurement fault on filter
PC board
5. Incorrect power limit on de-
vice
1. Poor contact: wall bracket <-
-> inverter
2. Voltage drop in the public
grid
3. Measurement fault on power
stage set
1. Ventilation opening blocked
2. Ambient temperature too
high
3. Internal or external fan not
connected
4. Faulty internal or external
fan
5. Poor contact: power stage
set <--> heat sink
6. Measurement fault on power
stage set
7. Faulty fan output on Recer-
bo
Remedy
1. Automatic correction
2. Automatic correction
3. Check fixing screws in the
DATCOM area
4. Contact energy supplier
5. Check AC connection
6. Report to Fronius Technical
Support specialists
7. Replace filter PC board
Remedy
1. Automatic correction
2. Contact energy supplier
3. Check fixing screws in the
DATCOM area
4. Replace filter PC board
5. Replace power stage set
1. Check fixing screws in the
DATCOM area
2. Automatic correction
3. Replace AC PC board. Oth-
erwise, replace DC PC board
1. Clean openings
2. Change installation site
3. Connect fan cable
4. Replace the fan
5. Check phase change paste
6. Replace AC PC board
7. Replace Recerbo
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