SMA 20000TL Service Manual - Manual (Page 17)

Event number Message, cause and corrective measures
3601 High discharge curr. > Check generator
The leakage currents of the inverter and the PV array are too high. There is a
ground fault, a residual current or a malfunction.
The inverter interrupts feed-in operation immediately after exceeding a thresh-
old and then automatically reconnects to the utility grid. If this process hap-
pens five times a day, the inverter disconnects from the utility grid and termi-
nates feed-in.
Corrective measures:
• Check the PV system for ground faults (see Section 8, page 27).
3701 Resid.curr.too.high > Check generator
The inverter has detected a residual current due to temporary grounding of the
PV array.
Corrective measures:
• Check the PV system for ground faults (see Section 8, page 27).
3801 … 3802 DC overcurrent > Check generator
Overcurrent at the DC input. The inverter briefly interrupts feed-in operation.
Corrective measures:
• If this message is displayed frequently, ensure that the PV array has been
correctly rated and wired.
3901 … 3902 Waiting for DC start conditions > Start cond. not met
The feed-in conditions for the utility grid are not yet fulfilled.
Corrective measures:
1. If irradiation is too low, wait for it to increase.
2. If this message is displayed frequently in the morning, increase the
voltage limit for starting grid feed-in. Change the parameter Minimum
voltage input or A.VStr, B.VStr.
3. If this message is displayed frequently with medium irradiation, ensure
that the PV array is correctly rated.
6001 … 6438 Self diagnosis > Interference device
The cause must be determined by the SMA Service Line.
Corrective measures:
• Contact the SMA Service Line.
6501 … 6511 Self diagnosis > Interference device
The inverter has switched off due to excessive temperature.
Corrective measures:
1. Clean the fans (see Section 6, page 22).
2. Ensure that the inverter has sufficient ventilation.
5 Troubleshooting SMA Solar Technology AG
Service Manual for Installers 17 STP20-25TL-SG-en-11