5 Operation
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Display message Description Cause and possible remedies
405:CAN user CAN user does not respond. · Check whether an error has occurred
in the CAN slave. Restart slave if
necessary.
406:file def Language file could not be loaded. · Restart your Solar Inverter. Carry out
a software update for the language
file.
407:file def Website could not be loaded. · Restart your Solar Inverter. Install the
latest file for the website via a soft-
ware update.
408:file def File with error messages could not be
loaded.
· Restart your Solar Inverter. Install the
latest error messages file via a soft-
ware update.
Communication warnings
501:Solar
(Warning)
No sensor found on sensor channel 1
(solar).
If you have connected a sensor:
· Check the connection to your sensor.
If you have not connected a sensor:
· Check the configuration with the
Sunways Browser.
502:Temp.
(Warning)
No sensor found on sensor channel 2
(temperature).
If you have connected a sensor:
· Check the connection to your sensor.
If you have not connected a sensor:
· Check the configuration with the
Sunways Browser.
503:CAN com.
(Warning)
Communication malfunctions occur
repeatedly on the CAN bus.
A malfunction occurs in the data trans-
mission on the CAN bus. However, a data
exchange continues to be possible.
· Check whether all connectors of the
bus lines and the terminating resis-
tors are properly mounted.
· Check whether the bus lines have
been routed parallel to power cables.
Separate bus lines and power cable
from each other spatially if necessary.
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