Event Numbers 64, 6401 – 6439: Self Diagnosis -> Interference Device

Event number 64 and the 4-digit event numbers 64xx generally indicate a device disturbance.

 If the message does not lead to relevant yield losses, e.g. because it appears only rarely (a maximum of once or twice a week) or because it only appears for a short time during the startup or shutdown process, no further action is necessary. 

However, if the message appears repeatedly or continuously, even after a full restart  , the cause and corrective action must be clarified by SMA Service.

In this case, please contact the SMA Service    with the following Information:

	Device type and serial number of the Inverter
	Event number
	How long has the error been present for now? Is it sporadic or continuous?
	Has a restart  been performed yet?
	Are there further error messages or is the device beeping?

Special cases:

6406 / 6407 / 6429

When these errors occur, SMA Service needs additional information in order to clarify the cause and corrective action. Otherwise, the replacement device will report the same error in some system arrangements.

When you contact SMA Service, please give us the following information, in addition to the information above:

• Type and number of connected PV modules

Example:
Input A: 3 strings each with 16 SunSolar XY250Z modules
Input B: 1 string with 13 SunSolar XY250Z modules

• Does the inverter feed in power despite the error? If so, to what level?
• Is the device beeping  ?