SMA SUNNY CENTRAL - Manual (Page 52)

Failures and Warnings SMA Solar Technology AG
52 SC-BEN092751 User Manual
111 Error text:
Grid frequency too high or too low
Error type 2
Cause:
Frequency on the AC side is outside the permitted range.
Corrective measures:
• Check the grid connections.
• Check grid stability.
• Check right-hand rotary field.
201 Error text:
Ground Fault 2 or plant temp. too high
Error type 2
Cause:
• The overtemperature fault chain is interrupted (refer to the wiring diagram).
• Cabinet overtemperature
• Transformer overtemperature
• Diode overtemperature
• The insultation resistance of the solar power system is lower than the set threshold
value.
• GFDI tripped.
Corrective measures:
• Check function of cooling fans.
• Clean or replace dirty air filters.
• Ambient or cooling air temperature too high.
• Check solar generator's insulation resistance.
• In the event of an insulation fault, separate and connect individual strings to detect the
faulty one.
• Check the function of the ground fault monitor.
• Check the GFDI (see "Additional Notes for Sunny Central M/P Inverters for Grounded
Operation of the Solar Generator").
No. Description