11 Error messages and troubleshooting
Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
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11.2 Warnings
Number
Message
Possible cause of error
Suggestions for troubleshooting
W01
Solar1 Low
DC input voltage at DC1 is below the minimum
required DC input voltage.
Check the DC input voltage at DC1 on the
inverter display.
The solar irradiation is possibly too low.
W02
Solar2 Low
DC input voltage at DC2 is below the minimum
required DC input voltage.
Check the DC input voltage at DC2 on the
inverter display.
The solar irradiation is possibly too low.
W11
HW Fan
One or more fans are blocked.
Remove all objects that might block the fans.
One or more fans are defective.
Replace the fans.
One or more fans are disconnected.
Check the connections of all fans.
SPD Fail
Inverter has been struck by lightning.
Check the inverter status.
One or more surge protection devices are
defective.
Replace the defective surge protection devices.
One or more surge protection devices are not
properly fitted.
Check all surge protection devices.