Grid monitoring failure

On SMA Sunny Island units, a failure of the grid monitoring function shows as display code F782, which is a level 4 message. In a cluster, warnings W797, W798 and W799 are level 1 messages that point to a grid monitoring failure on slave 1, slave 2 or slave 3, so the code tells you which device to check. In SMA devices, grid monitoring covers grid-related parameters, some of which are protected by the SMA Grid Guard code. Do not confuse this with a grid failure, which SMA defines as a utility grid outage or voltage and frequency moving outside the country-specific limits. A grid fault is logged when the voltage or frequency monitoring trips, while a monitoring failure means the monitoring function itself has failed. If grid failure events come back several times a day, SMA advises contacting the responsible grid operator.

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• sentence 5: support check: partial - Grid fault definition (voltage or frequency monitoring triggered) is stated, and F782 is a failure of grid monitoring, but 'the monitoring function itself has failed' and the contrast are only implied; 'logged' is not stated. -->