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Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017-03-09
10 Error events and troubleshooting
10.2 Warnings
Number Message Possible cause Correction suggestions
W01
Solar1 Low
(Solar1 Low)
The DC input voltage at DC1 is less than the
minimum permissible DC input voltage.
Check the DC input voltage at DC1 on the
inverter display.
There may be insufficient solar irradiation.
W02
Solar2 Low
(Solar2 Low)
The DC input voltage at DC2 is less than the
minimum permissible DC input voltage.
Check the DC input voltage at DC2 on the
inverter display.
There may be insufficient solar irradiation.
W11
HW Fan
(HW Fan)
One or more fans are blocked.
Remove all objects that might be blocking the
fans.
One or more fans are defective. Replace the fans.
One or more fans are disconnected. Check the connections for all fans.
SPD Fail
(SPD Fail)
The inverter has been hit 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 incor-
rectly fitted.
Check all surge protection devices.
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