Class 4 Service Codes - Fronius Primo serie Serviceanleitung, Ersatzteilliste

Code Description
303 Heat sink temperature too
high
306 POWER LOW
307 DC LOW
308 The intermediate circuit
voltage exceeds max. per-
missible limit
309 DC1 voltage too high
313 DC2 voltage too high
Class 4 Service Class 4 status codes may require the intervention of a trained Fronius service technician.
Codes
98
Behavior
1. Ventilation opening blocked
2. Ambient temperature too
high
3. Internal or external fans not
connected
4. Internal or external fans
faulty
5. Bad contact: power module
<--> heat sink
6. Measurement error on pow-
er module
7. Ventilator power on Recerbo
faulty
1. DC power too low for infeed
2. Measurement error on pow-
er module
1. Open the main DC switch.
2. PV generator not connected
3. DC voltage too low for infeed
4. Reverse voltage of PV gen-
erator
5. DC operating mode: fixed
voltage + incorrect voltage
6. Measurement error on pow-
er module
1. Voltage drop in alternating
current grid
2. Bad contact: wall bracket <-
-> inverter
3. Measurement error on pow-
er module
1. PV generator voltage at
MPP 1 too high
2. Incorrect DC cabling at MPP
1
3. Measurement error on pow-
er module
1. PV generator voltage at
MPP 2 too high
2. Incorrect DC cabling at MPP
2
3. Measurement error on pow-
er module
Remedy
1. Clean openings
2. Change setup location
3. Connect fan cable
4. Replace fans
5. Check phase change paste
6. Replace AC PC board
7. Replace Recerbo
1. Wait for more radiation in-
tensity or check solar modules
2. Replace DC PC board. Oth-
erwise replace AC PC board
1. Close the main DC switch.
2. Connect PV generator
3. Wait for more radiation in-
tensity or check solar modules
4. Reverse polarity of PV gen-
erator
5. Check MPP settings/voltag-
es
6. Replace DC PC board. Oth-
erwise replace AC PC board
1. Automatic correction
2. Check fixing screws in DAT-
COM area
3. Replace AC PC board
1. Check PV configuration
2. Check DC cabling
3. Replace DC PC board. Oth-
erwise replace AC PC board
1. Check PV configuration
2. Check DC cabling
3. Replace DC PC board. Oth-
erwise replace AC PC board