Surge protection devices (SPD) are designed to protect sensitive circuit
elements of the inverter from damage caused by lightning and other electrical
transients/surges, as such they are sacrificial components and periodically,
may need replacement.
The SPDs are located in the inverter.
If a warning message “AC Surge” or “DC Surge” appears on APP and DSS,
follow the procedure below to replace the SPD.
• Determine if the SPD unit is damaged. See Figure 5-5.
Figure 5-5: Display Indicating AC and DC SPD failure
LED Indicator
(RED FLASH)
LED Indicator
(GRN ON)
LED Indicator
(GRN ON)
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Maintenance
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