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10 Troubleshooting
SMA Solar Technology AG
52
SB13_21TL-IA-en-65
Installation Manual
10.3 Cleaning the Inverter
Watchdog
Watchdog Srr
Internal program run disturbance.
Corrective measures:
• If this message is displayed frequently, contact the SMA Service Line.
Risk of burns from hot heat sink
During operation, the heat sink at the top of the inverter can reach temperatures of over 70°C.
• Do not touch the heat sink.
• If the heat sink is soiled, clean it with a soft brush or a vacuum cleaner.
Damage to the display due to the use of cleaning agents
• If the inverter is soiled, clean the enclosure lid and the display using pure water and a cloth
only.
Message
Description and Corrective Measures