Fronius Rapid Shutdown Box Duo - Service Code 307 on Snaplnverter Series; Service Code 1175 on GEN24 Inverter Series

Inverter (SnapINverter series) Rapid Shutdown Box - Duo / Quat-
tro
Fronius Symo 12.5-3 480 **)
Fronius Symo 15.0-3 480 **)
Fronius Symo 17.5-3 480 **)
Fronius Symo 20.0-3 480 **)
Fronius Symo 22.7-3 480 **)
Fronius Symo 24.0-3 480 **)
Inverter (GEN24 series) Rapid Shutdown Box - Duo / Quat-
tro
Fronius Primo GEN24 3.8 / 3.8 Plus 208-240
Fronius Primo GEN24 5.0 / 5.0 Plus 208-240
Fronius Primo GEN24 6.0 / 6.0 Plus 208-240
*) Initiation via loss of AC only with Power stage SW2 version 0.6.34.4 or greater. See
section Connecting the Rapid Shutdown Box to Primo 10.0 - 15.0 for installation details
**) maximum DC voltage: 600 V
Service code 307
on the SnapIn-
verter series
Service code 307 on the display of the SnapINverter series:
Description: At the input, the inverter identifies a DC voltage too low for the grid power
feed operation. If the service code occurs for a lengthy period of time in spite of solar
radiation, the following steps can help discover the error:
- Check the position of the DC disconnector at the inverter - it should be ON
- Read the DC voltage on the display or measure it at the inverter terminals
- If the DC voltage is 0 V, this means that either the Rapid Shutdown Box is not
supplied with power from the pv array or there is no electrical connection
between the Rapid Shutdown Box and the inverter. Check DC cabling including
Rapid Shutdown Box inputs. Rapid Shutdown Box - Quattro: At least one
string has to be connected at input 1.
- If the DC voltage is approximately 28 V, this means that the Rapid Shutdown
Box is supplied with power and is waiting for approval at the signal ports. Check
cabling of the signal loop and position of any switches in the signal loop.
- If the service code still occurs in spite of solar radiation, contact your system engin-
eer.
Service Code
1175 on the
GEN24 inverter
series
Service Code 1175 on the GEN24 inverter series:
8